Added Javadoc comments to the classes

LICENSE

@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
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+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
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+   document.
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+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
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+the following:
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+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
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+   document.
+
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+   copies of the GNU GPL and this license document.
+
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+
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+       the Linked Version to produce a modified Combined Work, in the
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+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
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+  5. Combined Libraries.
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+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
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+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
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+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
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+Library as you received it specifies that a certain numbered version
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+received it does not specify a version number of the GNU Lesser
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+
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+permanent authorization for you to choose that version for the
+Library.

pom.xml

@@ -26,7 +26,7 @@
 
 	<groupId>com.mattrixwv</groupId>
 	<artifactId>cipher-stream-java</artifactId>
-	<version>1.3.6-SNAPSHOT</version>
+	<version>1.3.6</version>
 
 	<name>CipherStreamJava</name>
 	<description>A library to encrypt and decrypt simple ciphers</description>

src/main/java/com/mattrixwv/cipherstream/combination/ADFGVX.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/combination/ADFGVX.java
 //Mattrixwv
 // Created: 01-26-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.combination;
 
 
@@ -15,23 +31,49 @@ import com.mattrixwv.cipherstream.polysubstitution.Columnar;
 import com.mattrixwv.cipherstream.polysubstitution.LargePolybiusSquare;
 
 
+/**
+ * Implements the ADFGVX cipher, which is a combination of a Polybius square and a columnar transposition cipher.
+ * This class provides methods to encode and decode strings using the ADFGVX cipher.
+ *
+ * <p>
+ * The cipher involves two main steps:
+ * </p>
+ * <ol>
+ * 	<li>Encoding/decoding with a Polybius square (LargePolybiusSquare)</li>
+ * 	<li>Encoding/decoding with a columnar transposition cipher (Columnar)</li>
+ * </ol>
+ */
 public class ADFGVX{
 	private static final Logger logger = LoggerFactory.getLogger(ADFGVX.class);
-	//Fields
-	protected String inputString;	//The string that needs encoded/decoded
-	protected String outputString;	//The string that is output after encoding/decoding
-	protected String squareKeyword;	//The keyword used in the Polybius Square
-	protected String keyword;		//The Keyword used in the Columnar cipher
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
-	//Internal ciphers
-	protected LargePolybiusSquare largePolybiusSquare;	//The first step in encoding
-	protected Columnar columnar;	//The second step in encoding
+	//?Fields
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The string that is output after encoding/decoding */
+	protected String outputString;
+	/** The keyword used in the Polybius Square */
+	protected String squareKeyword;
+	/** The Keyword used in the Columnar cipher */
+	protected String keyword;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
+	//?Internal ciphers
+	/** The first step in encoding */
+	protected LargePolybiusSquare largePolybiusSquare;
+	/** The second step in encoding */
+	protected Columnar columnar;
 
 
-	//Ensures Polybius keyword constraints
+	/**
+	 * Sets the Polybius square keyword and validates it.
+	 *
+	 * @param squareKeyword the keyword for the Polybius square
+	 * @throws InvalidKeywordException if the keyword is null
+	 */
 	protected void setSquareKeyword(String squareKeyword) throws InvalidKeywordException{
 		if(squareKeyword == null){
 			throw new InvalidKeywordException("Square Keyword cannot be null");
@@ -40,7 +82,13 @@ public class ADFGVX{
 		logger.debug("squareKeyword '{}'", squareKeyword);
 		this.squareKeyword = squareKeyword;
 	}
-	//Ensures Columnar keyword constraints
+
+	/**
+	 * Sets the columnar cipher keyword and validates it.
+	 *
+	 * @param keyword the keyword for the columnar cipher
+	 * @throws InvalidKeywordException if the keyword is null
+	 */
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		if(keyword == null){
 			throw new InvalidKeywordException("Keyword cannot be null");
@@ -49,7 +97,14 @@ public class ADFGVX{
 		logger.debug("keyword '{}'", keyword);
 		this.keyword = keyword;
 	}
-	//Ensures inputString constraints
+
+
+	/**
+	 * Sets and sanitizes the input string according to the preservation settings.
+	 *
+	 * @param inputString the string to be processed
+	 * @throws InvalidInputException if the input string is null or blank after processing
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -81,7 +136,11 @@ public class ADFGVX{
 			throw new InvalidInputException("Input cannot be blank");
 		}
 	}
-	//Format the output string with capitals, symbols, and numbers that are in the input string
+
+
+	/**
+	 * Formats the output string to match the original input string when encoding.
+	 */
 	protected void formatOutputStringEncode(){
 		logger.debug("Formatting output string to match input string");
 
@@ -111,6 +170,9 @@ public class ADFGVX{
 		outputString = output.toString();
 		logger.debug("Saving output string '{}'", outputString);
 	}
+	/**
+	 * Formats the output string to match the original input string when decoding.
+	 */
 	protected void formatOutputStringDecode(){
 		logger.debug("Formatting output string to match input string");
 
@@ -141,7 +203,16 @@ public class ADFGVX{
 		outputString = output.toString();
 		logger.debug("Saving output string '{}'", outputString);
 	}
-	//Encodes the inputString and stores the result in outputString
+
+	/**
+	 * Encodes the input string using the Polybius square and columnar cipher.
+	 * Stores the result in outputString.
+	 *
+	 * @return the encoded string
+	 * @throws InvalidCharacterException	if there are invalid characters in the ciphers
+	 * @throws InvalidInputException		if the input string is invalid
+	 * @throws InvalidKeywordException		if any of the keywords are invalid
+	 */
 	protected String encode() throws InvalidCharacterException, InvalidInputException, InvalidKeywordException{
 		//Encode the input with polybius
 		logger.debug("Encoding using Polybius Square");
@@ -160,7 +231,16 @@ public class ADFGVX{
 
 		return outputString;
 	}
-	//Decodes the inputString and stores the result in outputString
+
+	/**
+	 * Decodes the input string using the columnar cipher and Polybius square.
+	 * Stores the result in outputString.
+	 *
+	 * @return the decoded string
+	 * @throws InvalidKeywordException		if any of the keywords are invalid
+	 * @throws InvalidCharacterException	if there are invalid characters in the ciphers
+	 * @throws InvalidInputException		if the input string is invalid
+	 */
 	protected String decode() throws InvalidKeywordException, InvalidCharacterException, InvalidInputException{
 		//Decode the input with columnar
 		logger.debug("Decoding using columnar");
@@ -181,13 +261,27 @@ public class ADFGVX{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code ADFGVX} instance with default settings:
+	 * capitals, whitespace, and symbols are not preserved.
+	 *
+	 * @throws InvalidCharacterException if there are invalid characters in the ciphers
+	 */
 	public ADFGVX() throws InvalidCharacterException{
 		preserveCapitals = false;
 		preserveWhitespace = false;
 		preserveSymbols = false;
 		reset();
 	}
+	/**
+	 * Constructs a new {@code ADFGVX} instance with specified settings for preserving capitals, whitespace, and symbols.
+	 *
+	 * @param preserveCapitals		whether to preserve capital letters in the output
+	 * @param preserveWhitespace	whether to preserve whitespace in the output
+	 * @param preserveSymbols		whether to preserve symbols in the output
+	 * @throws InvalidCharacterException if there are invalid characters in the ciphers
+	 */
 	public ADFGVX(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -195,14 +289,37 @@ public class ADFGVX{
 		reset();
 	}
 
-	//Encodes inputString using keyword and returns the result
+
+	/**
+	 * Encodes the provided input string using the specified keywords and returns the encoded result.
+	 *
+	 * @param squareKeyword	the keyword for the Polybius square
+	 * @param keyword		the keyword for the columnar cipher
+	 * @param inputString	the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if any of the keywords are invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 * @throws InvalidCharacterException if the input contains invalid characters
+	 */
 	public String encode(String squareKeyword, String keyword, String inputString) throws InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		setSquareKeyword(squareKeyword);
 		setKeyword(keyword);
 		setInputString(inputString);
 		return encode();
 	}
-	//Decodes inputString using keyword and returns the result
+
+
+	/**
+	 * Decodes the provided input string using the specified keywords and returns the decoded result.
+	 *
+	 * @param squareKeyword	the keyword for the Polybius square
+	 * @param keyword		the keyword for the columnar cipher
+	 * @param inputString	the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if any of the keywords are invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 * @throws InvalidCharacterException if the input contains invalid characters
+	 */
 	public String decode(String squareKeyword, String keyword, String inputString) throws InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		setSquareKeyword(squareKeyword);
 		setKeyword(keyword);
@@ -210,20 +327,47 @@ public class ADFGVX{
 		return decode();
 	}
 
-	//Getters
+
+	//?Getters
+	/**
+	 * Returns the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Returns the current Polybius square keyword.
+	 *
+	 * @return the Polybius square keyword
+	 */
 	public String getSquareKeyword(){
 		return squareKeyword;
 	}
+	/**
+	 * Returns the current columnar cipher keyword.
+	 *
+	 * @return the columnar cipher keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
-	//Makes sure all variables are empty
+
+
+	/**
+	 * Resets all fields to their default values and re-initializes the internal ciphers.
+	 *
+	 * @throws InvalidCharacterException if there are invalid characters in the ciphers
+	 */
 	public void reset() throws InvalidCharacterException{
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/combination/ADFGX.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/combination/ADFGX.java
 //Mattrixwv
 // Created: 01-25-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.combination;
 
 
@@ -15,24 +31,50 @@ import com.mattrixwv.cipherstream.polysubstitution.Columnar;
 import com.mattrixwv.cipherstream.polysubstitution.PolybiusSquare;
 
 
+/**
+ * Implements the ADFGX cipher, which is a combination of a Polybius square and a columnar transposition cipher.
+ * This class provides methods to encode and decode strings using the ADFGX cipher.
+ *
+ * <p>
+ * The cipher involves two main steps:
+ * </p>
+ * <ol>
+ * 	<li>Encoding/decoding with a Polybius square (PolybiusSquare)</li>
+ * 	<li>Encoding/decoding with a columnar transposition cipher (Columnar)</li>
+ * </ol>
+ */
 public class ADFGX{
 	private static final Logger logger = LoggerFactory.getLogger(ADFGX.class);
 
-	//Internal fields
-	protected String inputString;	//The string that needs encoded/decoded
-	protected String outputString;	//The string that is output after encoding/decoding
-	protected String squareKeyword;	//The keyword used in the Polybius Square
-	protected String keyword;		//The keyword used in the Columnar cipher
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
-	//Internal ciphers
-	protected PolybiusSquare polybiusSquare;	//The first step in encoding
-	protected Columnar columnar;	//The second step in encoding
+	//?Internal fields
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The string that is output after encoding/decoding */
+	protected String outputString;
+	/** The keyword used in the Polybius Square */
+	protected String squareKeyword;
+	/** The keyword used in the Columnar cipher */
+	protected String keyword;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
+	//?Internal ciphers
+	/** The first step in encoding */
+	protected PolybiusSquare polybiusSquare;
+	/** The second step in encoding */
+	protected Columnar columnar;
 
 
-	//Ensures Polybius keyword constraints
+	/**
+	 * Sets the Polybius square keyword and validates it.
+	 *
+	 * @param squareKeyword the keyword for the Polybius square
+	 * @throws InvalidKeywordException if the keyword is null
+	 */
 	protected void setSquareKeyword(String squareKeyword) throws InvalidKeywordException{
 		if(squareKeyword == null){
 			throw new InvalidKeywordException("Square keyword cannot be null");
@@ -41,7 +83,12 @@ public class ADFGX{
 		logger.debug("Square keyword '{}'", squareKeyword);
 		this.squareKeyword = squareKeyword;
 	}
-	//Ensures Columnar keyword constraints
+	/**
+	 * Sets the columnar cipher keyword and validates it.
+	 *
+	 * @param keyword the keyword for the columnar cipher
+	 * @throws InvalidKeywordException if the keyword is null
+	 */
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		if(keyword == null){
 			throw new InvalidKeywordException("Keyword cannot be null");
@@ -50,7 +97,12 @@ public class ADFGX{
 		logger.debug("Keyword '{}'", keyword);
 		this.keyword = keyword;
 	}
-	//Ensures inputString constraints
+	/**
+	 * Sets and sanitizes the input string according to the preservation settings.
+	 *
+	 * @param inputString the string to be processed
+	 * @throws InvalidInputException if the input string is null or blank after processing
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -80,7 +132,9 @@ public class ADFGX{
 			throw new InvalidInputException("Input cannot be blank");
 		}
 	}
-	//Format the output string with capitals, symbols, and numbers that are in the input string
+	/**
+	 * Formats the output string to match the original input string when encoding.
+	 */
 	protected void formatOutputStringEncode(){
 		logger.debug("Formatting output string to match input string");
 
@@ -110,6 +164,9 @@ public class ADFGX{
 		outputString = output.toString();
 		logger.debug("Saving output string '{}'", outputString);
 	}
+	/**
+	 * Formats the output string to match the original input string when decoding.
+	 */
 	protected void formatOutputStringDecode(){
 		logger.debug("Formatting output string to match input string");
 		StringBuilder output = new StringBuilder();
@@ -139,7 +196,13 @@ public class ADFGX{
 		outputString = output.toString();
 		logger.debug("Saving output string '{}'", outputString);
 	}
-	//Encodes the inputString and stores the result in outputString
+	/**
+	 * Encodes the input string using the Polybius square and columnar cipher.
+	 *
+	 * @throws InvalidCharacterException	if there are invalid characters in the ciphers
+	 * @throws InvalidInputException		if the input string is invalid
+	 * @throws InvalidKeywordException		if any of the keywords are invalid
+	 */
 	protected void encode() throws InvalidCharacterException, InvalidInputException, InvalidKeywordException{
 		//Encode the input with polybius
 		logger.debug("Encoding using Polybius Square");
@@ -158,7 +221,13 @@ public class ADFGX{
 		//Add whatever is needed to the output string
 		formatOutputStringEncode();
 	}
-	//Decodes the inputString and stores the result in outputString
+	/**
+	 * Decodes the input string using the columnar cipher and Polybius square.
+	 *
+	 * @throws InvalidKeywordException		if any of the keywords are invalid
+	 * @throws InvalidCharacterException	if there are invalid characters in the ciphers
+	 * @throws InvalidInputException		if the input string is invalid
+	 */
 	protected void decode() throws InvalidKeywordException, InvalidCharacterException, InvalidInputException{
 		//Decode the input with columnar
 		logger.debug("Decoding using columnar");
@@ -179,13 +248,27 @@ public class ADFGX{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code ADFGX} instance with default settings:
+	 * capitals, whitespace, and symbols are not preserved.
+	 *
+	 * @throws InvalidCharacterException if there are invalid characters in the ciphers
+	 */
 	public ADFGX() throws InvalidCharacterException{
 		preserveCapitals = false;
 		preserveWhitespace = false;
 		preserveSymbols = false;
 		reset();
 	}
+	/**
+	 * Constructs a new {@code ADFGX} instance with specified settings for preserving capitals, whitespace, and symbols.
+	 *
+	 * @param preserveCapitals		whether to preserve capital letters in the output
+	 * @param preserveWhitespace	whether to preserve whitespace in the output
+	 * @param preserveSymbols		whether to preserve symbols in the output
+	 * @throws InvalidCharacterException if there are invalid characters in the ciphers
+	 */
 	public ADFGX(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -193,7 +276,17 @@ public class ADFGX{
 		reset();
 	}
 
-	//Encodes inputString using keyword and returns the result
+	/**
+	 * Encodes the provided input string using the specified keywords and returns the encoded result.
+	 *
+	 * @param squareKeyword	the keyword for the Polybius square
+	 * @param keyword		the keyword for the columnar cipher
+	 * @param inputString	the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if any of the keywords are invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 * @throws InvalidCharacterException if the input contains invalid characters
+	 */
 	public String encode(String squareKeyword, String keyword, String inputString) throws InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		setSquareKeyword(squareKeyword);
 		setKeyword(keyword);
@@ -201,7 +294,17 @@ public class ADFGX{
 		encode();
 		return outputString;
 	}
-	//Decodes inputString using keyword and returns the result
+	/**
+	 * Decodes the provided input string using the specified keywords and returns the decoded result.
+	 *
+	 * @param squareKeyword	the keyword for the Polybius square
+	 * @param keyword		the keyword for the columnar cipher
+	 * @param inputString	the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if any of the keywords are invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 * @throws InvalidCharacterException if the input contains invalid characters
+	 */
 	public String decode(String squareKeyword, String keyword, String inputString) throws InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		setSquareKeyword(squareKeyword);
 		setKeyword(keyword);
@@ -210,20 +313,44 @@ public class ADFGX{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Returns the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Returns the current Polybius square keyword.
+	 *
+	 * @return the Polybius square keyword
+	 */
 	public String getSquareKeyword(){
 		return squareKeyword;
 	}
+	/**
+	 * Returns the current columnar cipher keyword.
+	 *
+	 * @return the columnar cipher keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
-	//Makes sure all variables are empty
+	/**
+	 * Resets all fields to their default values and reinitializes the internal ciphers.
+	 *
+	 * @throws InvalidCharacterException if there are invalid characters in the ciphers
+	 */
 	public void reset() throws InvalidCharacterException{
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/exceptions/InvalidBaseException.java

@@ -1,20 +1,58 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/CipherStreamJava/Exceptions/InvalidBaseException.java
 //Mattrixwv
 // Created: 01-09-22
-//Modified: 01-09-22
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.exceptions;
 
 
+/**
+ * Thrown to indicate that a problem has occurred related to the base or group size.
+ */
 public class InvalidBaseException extends RuntimeException{
+	/**
+	 * Constructs a new {@code InvalidBaseException} with {@code null} as its detail message.
+	 */
 	public InvalidBaseException(){
 		super();
 	}
+	 /**
+	 * Constructs a new {@code InvalidBaseException} with the specified detail message.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 */
 	public InvalidBaseException(String message){
 		super(message);
 	}
+	/**
+	 * Constructs a new {@code InvalidBaseException} with the specified cause.
+	 *
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidBaseException(Throwable error){
 		super(error);
 	}
+	/**
+	 * Constructs a new {@code InvalidBaseException} with the specified detail message and cause.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidBaseException(String message, Throwable error){
 		super(message, error);
 	}

src/main/java/com/mattrixwv/cipherstream/exceptions/InvalidCharacterException.java

@@ -1,20 +1,58 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/CipherStreamJava/Exceptions/InvalidCharacterException.java
 //Mattrixwv
 // Created: 01-04-22
-//Modified: 01-04-22
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.exceptions;
 
 
+/**
+ * Thrown to indicate that a problem has occurred related to an invalid character.
+ */
 public class InvalidCharacterException extends RuntimeException{
+	/**
+	 * Constructs a new {@code InvalidCharacterException} with {@code null} as its detail message.
+	 */
 	public InvalidCharacterException(){
 		super();
 	}
+	/**
+	 * Constructs a new {@code InvalidCharacterException} with the specified detail message.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 */
 	public InvalidCharacterException(String message){
 		super(message);
 	}
+	/**
+	 * Constructs a new {@code InvalidCharacterException} with the specified cause.
+	 *
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidCharacterException(Throwable error){
 		super(error);
 	}
+	/**
+	 * Constructs a new {@code InvalidCharacterException} with the specified detail message and cause.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidCharacterException(String message, Throwable error){
 		super(message, error);
 	}

src/main/java/com/mattrixwv/cipherstream/exceptions/InvalidInputException.java

@@ -1,20 +1,58 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/CipherStreamJava/Exceptions/InvalidInputException.java
 //Mattrixwv
 // Created: 01-09-22
-//Modified: 01-09-22
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.exceptions;
 
 
+/**
+ * Thrown to indicate that a problem has occurred related to invalid input.
+ */
 public class InvalidInputException extends RuntimeException{
+	/**
+	 * Constructs a new {@code InvalidInputException} with {@code null} as its detail message.
+	 */
 	public InvalidInputException(){
 		super();
 	}
+	/**
+	 * Constructs a new {@code InvalidInputException} with the specified detail message.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 */
 	public InvalidInputException(String message){
 		super(message);
 	}
+	/**
+	 * Constructs a new {@code InvalidInputException} with the specified cause.
+	 *
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidInputException(Throwable error){
 		super(error);
 	}
+	/**
+	 * Constructs a new {@code InvalidInputException} with the specified detail message and cause.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidInputException(String message, Throwable error){
 		super(message, error);
 	}

src/main/java/com/mattrixwv/cipherstream/exceptions/InvalidKeyException.java

@@ -1,20 +1,58 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/exceptions/InvalidKeyException.java
 //Matrixwv
 // Created: 07-09-22
-//Modified: 07-09-22
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.exceptions;
 
 
+/**
+ * Thrown to indicate that a problem has occurred related to an invalid key.
+ */
 public class InvalidKeyException extends RuntimeException{
+	/**
+	 * Constructs a new {@code InvalidKeyException} with {@code null} as its detail message.
+	 */
 	public InvalidKeyException(){
 		super();
 	}
+	/**
+	 * Constructs a new {@code InvalidKeyException} with the specified detail message.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 */
 	public InvalidKeyException(String message){
 		super(message);
 	}
+	/**
+	 * Constructs a new {@code InvalidKeyException} with the specified cause.
+	 *
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidKeyException(Throwable error){
 		super(error);
 	}
+	/**
+	 * Constructs a new {@code InvalidKeyException} with the specified detail message and cause.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidKeyException(String message, Throwable error){
 		super(message, error);
 	}

src/main/java/com/mattrixwv/cipherstream/exceptions/InvalidKeywordException.java

@@ -1,20 +1,58 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/CipherStreamJava/Exceptions/InvalidKeywordException.java
 //Mattrixwv
 // Created: 01-09-22
-//Modified: 01-09-22
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.exceptions;
 
 
+/**
+ * Thrown to indicate that a problem has occurred related to an invalid keyword.
+ */
 public class InvalidKeywordException extends RuntimeException{
+	/**
+	 * Constructs a new {@code InvalidKeywordException} with {@code null} as its detail message.
+	 */
 	public InvalidKeywordException(){
 		super();
 	}
+	/**
+	 * Constructs a new {@code InvalidKeywordException} with the specified detail message.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 */
 	public InvalidKeywordException(String message){
 		super(message);
 	}
+	/**
+	 * Constructs a new {@code InvalidKeywordException} with the specified cause.
+	 *
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidKeywordException(Throwable error){
 		super(error);
 	}
+	/**
+	 * Constructs a new {@code InvalidKeywordException} with the specified detail message and cause.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method
+	 * @param error the cause, which is saved for later retrieval by the {@link #getCause()} method
+	 */
 	public InvalidKeywordException(String message, Throwable error){
 		super(message, error);
 	}

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Affine.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/polysubstitution/Affine.java
 //Mattrixwv
 // Created: 01-26-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -13,20 +29,44 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * Implements the Affine cipher, which is a monoalphabetic substitution cipher based on linear algebra.
+ * This class provides methods to encode and decode strings using the Affine cipher with a specified key.
+ *
+ * <p>
+ * The Affine cipher uses two keys:
+ * </p>
+ * <ul>
+ *     <li><strong>Key1</strong>: The multiplicative key (must be relatively prime to 26)</li>
+ *     <li><strong>Key2</strong>: The additive key</li>
+ * </ul>
+ */
 public class Affine{
 	private static final Logger logger = LoggerFactory.getLogger(Affine.class);
-	//Fields
-	protected String inputString;	//The string that needs encoded/decoded
-	protected String outputString;	//The string that is output after encoding/decoding
-	protected int key1;	//The multiplicative key. Key1 must be relatively prime to 26
-	protected int key2;	//The additive key
-	//Settings
-	protected boolean preserveCapitals;	//Persist capitals in the output string
-	protected boolean preserveSymbols;	//Persist symbols in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
+	//?Fields
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The string that is output after encoding/decoding */
+	protected String outputString;
+	/** The multiplicative key. Key1 must be relatively prime to 26 */
+	protected int key1;
+	/** The additive key */
+	protected int key2;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
 
 
-	//Ensures key1 constraints
+	/**
+	 * Sets the multiplicative key and validates it.
+	 *
+	 * @param key1 the multiplicative key
+	 * @throws InvalidKeywordException if the key1 is not relatively prime to 26
+	 */
 	protected void setKey1(int key1) throws InvalidKeywordException{
 		logger.debug("Setting key1 {}", key1);
 
@@ -48,7 +88,11 @@ public class Affine{
 
 		logger.debug("Cleaned key1 {}", key1);
 	}
-	//Ensures key2 constraints
+	/**
+	 * Sets the additive key.
+	 *
+	 * @param key2 the additive key
+	 */
 	protected void setKey2(int key2){
 		logger.debug("Setting key2 {}", key2);
 
@@ -65,7 +109,12 @@ public class Affine{
 
 		logger.debug("Cleaned key2 {}", key2);
 	}
-	//Ensures inputString constraints
+	/**
+	 * Sets and sanitizes the input string according to the preservation settings.
+	 *
+	 * @param inputString the string to be processed
+	 * @throws InvalidInputException if the input string is null or blank after processing
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input must not be null");
@@ -97,7 +146,9 @@ public class Affine{
 			throw new InvalidInputException("Input cannot be blank");
 		}
 	}
-	//Encodes the inputString and stores the result in outputString
+	/**
+	 * Encodes the input string using the affine cipher.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -138,7 +189,9 @@ public class Affine{
 		outputString = output.toString();
 		logger.debug("Saving output string '{}'", outputString);
 	}
-	//Decodes the inputString and stores the result in outputString
+	/**
+	 * Decodes the input string using the affine cipher.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -194,13 +247,24 @@ public class Affine{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code Affine} instance with default settings:
+	 * capitals, symbols, and whitespace are not preserved.
+	 */
 	public Affine(){
 		preserveCapitals = false;
 		preserveSymbols = false;
 		preserveWhitespace = false;
 		reset();
 	}
+	/**
+	 * Constructs a new {@code Affine} instance with specified settings for preserving capitals, symbols, and whitespace.
+	 *
+	 * @param preserveCapitals     whether to preserve capital letters in the output
+	 * @param preserveWhitespace   whether to preserve whitespace in the output
+	 * @param preserveSymbols      whether to preserve symbols in the output
+	 */
 	public Affine(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		this.preserveCapitals = preserveCapitals;
 		this.preserveSymbols = preserveSymbols;
@@ -208,7 +272,16 @@ public class Affine{
 		reset();
 	}
 
-	//Encodes inputString using key1 and key2 and returns the result
+	/**
+	 * Encodes the provided input string using the specified keys and returns the encoded result.
+	 *
+	 * @param key1        the multiplicative key (must be relatively prime to 26)
+	 * @param key2        the additive key
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if key1 is not relatively prime to 26
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	public String encode(int key1, int key2, String inputString) throws InvalidKeywordException, InvalidInputException{
 		setKey1(key1);
 		setKey2(key2);
@@ -216,7 +289,16 @@ public class Affine{
 		encode();
 		return outputString;
 	}
-	//Decodes inputString using key1 and key2 and returns the result
+	/**
+	 * Decodes the provided input string using the specified keys and returns the decoded result.
+	 *
+	 * @param key1        the multiplicative key (must be relatively prime to 26)
+	 * @param key2        the additive key
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if key1 is not relatively prime to 26
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	public String decode(int key1, int key2, String inputString) throws InvalidKeywordException, InvalidInputException{
 		setKey1(key1);
 		setKey2(key2);
@@ -225,20 +307,42 @@ public class Affine{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Returns the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Returns the current multiplicative key.
+	 *
+	 * @return the multiplicative key
+	 */
 	public int getKey1(){
 		return key1;
 	}
+	/**
+	 * Returns the current additive key.
+	 *
+	 * @return the additive key
+	 */
 	public int getKey2(){
 		return key2;
 	}
-	//Makes sure all of the variables are empty
+	/**
+	 * Resets all fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Atbash.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/monosubstitution/Atbash.java
 //Mattrixwv
 // Created: 07-25-21
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -11,18 +27,34 @@ import org.slf4j.LoggerFactory;
 import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 
 
+/**
+ * Implements the Atbash cipher, a simple substitution cipher where each letter of the alphabet is mapped to its reverse.
+ * For example, 'A' is mapped to 'Z', 'B' to 'Y', and so on.
+ * This class provides methods to encode and decode strings using the Atbash cipher.
+ *
+ * <p>
+ * The Atbash cipher is symmetric, meaning that encoding and decoding are the same operation.
+ * </p>
+ */
 public class Atbash{
 	private static final Logger logger = LoggerFactory.getLogger(Atbash.class);
-	//Fields
-	protected String inputString;		//Holds the string that needs encoded or decoded
-	protected String outputString;		//The encoded/decoded string
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	//?Fields
+	/** Holds the string that needs encoded or decoded */
+	protected String inputString;
+	/** The encoded/decoded string */
+	protected String outputString;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Encodes inputString and stores in outputString
+	/**
+	 * Encodes the input string using the Atbash cipher.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 		StringBuilder output = new StringBuilder();
@@ -57,7 +89,12 @@ public class Atbash{
 		outputString = output.toString();
 		logger.debug("Saving output string '{}'", outputString);
 	}
-	//Removes all invalid characters and sets inputString
+	/**
+	 * Sets and sanitizes the input string according to the preservation settings.
+	 *
+	 * @param inputString the string to be processed
+	 * @throws InvalidInputException if the input string is null or blank after processing
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -95,13 +132,24 @@ public class Atbash{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code Atbash} instance with default settings:
+	 * capitals, symbols, and whitespace are not preserved.
+	 */
 	public Atbash(){
 		reset();
 		preserveCapitals = false;
 		preserveWhitespace = false;
 		preserveSymbols = false;
 	}
+	/**
+	 * Constructs a new {@code Atbash} instance with specified settings for preserving capitals, whitespace, and symbols.
+	 *
+	 * @param preserveCapitals     whether to preserve capital letters in the output
+	 * @param preserveWhitespace   whether to preserve whitespace in the output
+	 * @param preserveSymbols      whether to preserve symbols in the output
+	 */
 	public Atbash(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		reset();
 		this.preserveCapitals = preserveCapitals;
@@ -109,7 +157,13 @@ public class Atbash{
 		this.preserveSymbols = preserveSymbols;
 	}
 
-	//Encodes inputString and returns the result
+	/**
+	 * Encodes the provided input string using the Atbash cipher and returns the encoded result.
+	 *
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(String inputString) throws InvalidInputException{
 		//Make sure everything is empty before you begin
 		reset();
@@ -117,19 +171,38 @@ public class Atbash{
 		encode();
 		return outputString;
 	}
-	//Decodes inputString and returns the result
+	/**
+	 * Decodes the provided input string using the Atbash cipher and returns the decoded result.
+	 * Since the Atbash cipher is symmetric, this method performs the same operation as encoding.
+	 *
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String decode(String inputString) throws InvalidInputException{
 		return encode(inputString);
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Returns the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
-	//Makes sure all variables are empty
+	/**
+	 * Resets all fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Autokey.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/CipherStreamJava/Autokey.java
 //Mattrixwv
 // Created: 07-25-21
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -12,11 +28,28 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * Implements the Autokey cipher, an extension of the Vigenère cipher that uses a keyword combined with the plaintext itself as the key.
+ * The Autokey cipher adds the plaintext to the end of the keyword to create a longer key, which helps to make the encryption stronger.
+ * This class inherits from the {@code Vigenere} class and overrides methods to handle encoding and decoding with the Autokey cipher.
+ *
+ * <p>
+ * The Autokey cipher is symmetric, meaning that encoding and decoding are essentially the same process, but with a different key setup for decoding.
+ * </p>
+ */
 public class Autokey extends Vigenere{
 	private static final Logger logger = LoggerFactory.getLogger(Autokey.class);
 
 
-	//Special rules for setting the strings for encoding
+	/**
+	 * Sets up the keyword and input string for encoding, generating a longer key that includes the plaintext.
+	 * This method is used internally to prepare the cipher for encoding.
+	 *
+	 * @param keyword      the keyword used for encoding
+	 * @param inputString  the string to be encoded
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	protected void encodeSet(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		logger.debug("Setting fields for encoding");
 
@@ -44,7 +77,15 @@ public class Autokey extends Vigenere{
 		offset.clear();
 		setOffset();
 	}
-	//Setting the strings for decoding
+	/**
+	 * Sets up the keyword and input string for decoding. The keyword is used to decode the input string.
+	 * This method is used internally to prepare the cipher for decoding.
+	 *
+	 * @param keyword      the keyword used for decoding
+	 * @param inputString  the string to be decoded
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	protected void decodeSet(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		logger.debug("Setting fields for decoding");
 
@@ -56,7 +97,10 @@ public class Autokey extends Vigenere{
 		logger.debug("Setting input string");
 		setInputString(inputString);
 	}
-	//Decodes the inputString
+	/**
+	 * Decodes the input string using the Autokey cipher.
+	 * This method is overridden to handle decoding with the Autokey cipher, which involves using the key and updating it with decoded characters.
+	 */
 	@Override
 	protected void decode(){
 		logger.debug("Decoding");
@@ -113,14 +157,32 @@ public class Autokey extends Vigenere{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code Autokey} instance with default settings for preserving capitals, whitespace, and symbols.
+	 */
 	public Autokey(){
 		super();
 	}
+	/**
+	 * Constructs a new {@code Autokey} instance with specified settings for preserving capitals, whitespace, and symbols.
+	 *
+	 * @param preserveCapitals     whether to preserve capital letters in the output
+	 * @param preserveWhitespace   whether to preserve whitespace in the output
+	 * @param preserveSymbols      whether to preserve symbols in the output
+	 */
 	public Autokey(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		super(preserveCapitals, preserveWhitespace, preserveSymbols);
 	}
-	//Encodes inputString using the Autokey cipher
+	/**
+	 * Encodes the input string using the Autokey cipher with the provided keyword.
+	 *
+	 * @param keyword      the keyword used for encoding
+	 * @param inputString  the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	@Override
 	public String encode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		reset();
@@ -128,7 +190,15 @@ public class Autokey extends Vigenere{
 		encode();
 		return outputString;
 	}
-	//Decodes inputString using the Autokey cipher
+	/**
+	 * Decodes the input string using the Autokey cipher with the provided keyword.
+	 *
+	 * @param keyword      the keyword used for decoding
+	 * @param inputString  the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	@Override
 	public String decode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		reset();

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Baconian.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/test/java/com/mattrixwv/CipherStreamJava/Baconian.java
 //Mattrixwv
 // Created: 01-12-22
-//Modified: 04-19-24
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -16,20 +32,38 @@ import com.mattrixwv.cipherstream.exceptions.InvalidCharacterException;
 import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 
 
+/**
+ * Implements the Baconian cipher, a method of steganography where each letter of the alphabet is represented by a unique sequence of five characters ('a' or 'b').
+ * The Baconian cipher is a simple substitution cipher that can encode and decode text based on these sequences.
+ *
+ * <p>
+ * The cipher uses a predefined list of five-character strings to represent each letter of the alphabet (A-Z). The input string is converted to these sequences for encoding,
+ * and sequences are converted back to letters for decoding.
+ * </p>
+ */
 public class Baconian{
 	private static final Logger logger = LoggerFactory.getLogger(Baconian.class);
 
-	//Conversions
+	//?Conversions
+	/** Predefined code for Baconian cipher (5-character strings for A-Z) */
 	protected static final ArrayList<String> code = new ArrayList<>(Arrays.asList(
 		"aaaaa", "aaaab", "aaaba", "aaabb", "aabaa", "aabab", "aabba","aabbb", "abaaa", "abaaa", "abaab", "ababa", "ababb",	//A-M
 		"abbaa", "abbab", "abbba", "abbbb", "baaaa", "baaab", "baaba", "baabb", "baabb", "babaa", "babab", "babba", "babbb"		//N-Z
 	));
-	protected String inputString;		//The string that needs encoded/decoded
-	protected String outputString;		//The encoded/decoded string
-	protected boolean preserveCapitals;	//Persist capitals in the output string
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded string */
+	protected String outputString;
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
 
 
-	//Sets the input string
+	/**
+	 * Sets the input string for encoding, removing whitespace and symbols, and handling capitalization based on the flag.
+	 *
+	 * @param inputString the string to be encoded
+	 * @throws InvalidInputException if the input string is null, empty, or invalid
+	 */
 	protected void setInputStringEncode(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -53,6 +87,13 @@ public class Baconian{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
+	/**
+	 * Sets the input string for decoding, ensuring it contains only valid Baconian characters (a's and b's) with a length of 5.
+	 *
+	 * @param inputString the string to be decoded
+	 * @throws InvalidCharacterException if the input string contains invalid Baconian characters
+	 * @throws InvalidInputException     if the input string is null or empty
+	 */
 	protected void setInputStringDecode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -91,7 +132,10 @@ public class Baconian{
 
 		logger.debug("Cleaned input string '{}'", inputString);
 	}
-	//Encodes the inputString and stores the result in outputString
+	/**
+	 * Encodes the input string using the Baconian cipher.
+	 * Each character in the input string is converted to its corresponding Baconian sequence.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 		StringJoiner output = new StringJoiner(" ");
@@ -121,7 +165,10 @@ public class Baconian{
 		outputString = output.toString();
 		logger.debug("Saving output string '{}'", outputString);
 	}
-	//Decodes the inputString and stores the result in outputString
+	/**
+	 * Decodes the input string using the Baconian cipher.
+	 * Each Baconian sequence in the input string is converted back to its corresponding character.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -157,24 +204,45 @@ public class Baconian{
 		logger.debug("Saving output string '{}'", outputString);
 	}
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code Baconian} instance with default settings for preserving capitals.
+	 */
 	public Baconian(){
 		reset();
 		preserveCapitals = false;
 	}
+	/**
+	 * Constructs a new {@code Baconian} instance with a specified setting for preserving capitals.
+	 *
+	 * @param preserveCapitals whether to preserve capital letters in the output
+	 */
 	public Baconian(boolean preserveCapitals){
 		reset();
 		this.preserveCapitals = preserveCapitals;
 	}
 
-	//Sets the inputString and encodes the message
+	/**
+	 * Encodes the input string using the Baconian cipher.
+	 *
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(String inputString) throws InvalidInputException{
 		reset();
 		setInputStringEncode(inputString);
 		encode();
 		return outputString;
 	}
-	//Sets the inputString and decodes the message
+	/**
+	 * Decodes the input string using the Baconian cipher.
+	 *
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidCharacterException if the input string contains invalid Baconian characters
+	 * @throws InvalidInputException     if the input string is invalid
+	 */
 	public String decode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		reset();
 		setInputStringDecode(inputString);
@@ -182,14 +250,26 @@ public class Baconian{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
-	//Makes sure all variables are empty
+	/**
+	 * Resets the input and output strings to empty.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/monosubstitution/BaseX.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/monosubstitution/BaseX.java
 //Mattrixwv
 // Created: 01-08-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -15,16 +31,35 @@ import com.mattrixwv.cipherstream.exceptions.InvalidCharacterException;
 import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 
 
+/**
+ * A class for encoding and decoding strings using a specified numerical base.
+ * The BaseX class allows encoding and decoding of strings where characters are represented in a given base.
+ * The base can be set to any value between Character.MIN_RADIX and Character.MAX_RADIX.
+ *
+ * <p>
+ * This class supports encoding and decoding of ASCII characters into their base-X representations,
+ * where X is the base provided by the user. It ensures that input strings are valid and within the acceptable range
+ * for the specified base.
+ * </p>
+ */
 public class BaseX{
 	private static final Logger logger = LoggerFactory.getLogger(BaseX.class);
-	//Fields
-	protected String inputString;	//The string that needs encoded/decoded
-	protected String outputString;	//The encoded/decoded string
-	//Settings
-	protected int base;	//The base that the number will be encoded at
+	//?Fields
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded string */
+	protected String outputString;
+	//?Settings
+	/** The base that the number will be encoded at */
+	protected int base;
 
 
-	//Sets the input string
+	/**
+	 * Sets the input string for encoding, ensuring it is not null and contains at least one letter.
+	 *
+	 * @param inputString the string to be encoded
+	 * @throws InvalidInputException if the input string is null or blank
+	 */
 	protected void setInputStringEncode(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -38,6 +73,13 @@ public class BaseX{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
+	/**
+	 * Sets the input string for decoding, ensuring it is not null, does not contain invalid characters, and is properly formatted.
+	 *
+	 * @param inputString the string to be decoded
+	 * @throws InvalidCharacterException if the input string contains invalid characters
+	 * @throws InvalidInputException     if the input string is null or blank
+	 */
 	protected void setInputStringDecode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -68,7 +110,12 @@ public class BaseX{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Sets the numeric base
+	/**
+	 * Sets the base for encoding and decoding, ensuring it is within valid range.
+	 *
+	 * @param base the base to be set
+	 * @throws InvalidBaseException if the base is less than Character.MIN_RADIX or greater than Character.MAX_RADIX
+	 */
 	protected void setBase(int base) throws InvalidBaseException{
 		if(base < Character.MIN_RADIX){
 			throw new InvalidBaseException("Base cannot be less than " + Character.MIN_RADIX);
@@ -81,7 +128,9 @@ public class BaseX{
 
 		this.base = base;
 	}
-	//Encode inputString, store it in outputString, and return it
+	/**
+	 * Encodes the input string using the specified base.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -102,7 +151,11 @@ public class BaseX{
 		outputString = output.toString().toUpperCase();
 		logger.debug("Saving output string '{}'", outputString);
 	}
-	//Decode inputString, store it in outputString, and return it
+	/**
+	 * Decodes the input string from the specified base.
+	 *
+	 * @throws InvalidCharacterException if the input string contains invalid characters for the base
+	 */
 	protected void decode() throws InvalidCharacterException{
 		logger.debug("Decoding");
 
@@ -129,23 +182,49 @@ public class BaseX{
 		logger.debug("Saving output string '{}'", outputString);
 	}
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code BaseX} instance with the default base of 2.
+	 *
+	 * @throws InvalidBaseException if the default base is invalid
+	 */
 	public BaseX() throws InvalidBaseException{
 		reset();
 		setBase(2);
 	}
+	/**
+	 * Constructs a new {@code BaseX} instance with the specified base.
+	 *
+	 * @param base the base to be used for encoding and decoding
+	 * @throws InvalidBaseException if the base is invalid
+	 */
 	public BaseX(int base) throws InvalidBaseException{
 		reset();
 		setBase(base);
 	}
 
-	//Sets the inputString and encodes the message
+	/**
+	 * Encodes the given input string using the current base.
+	 *
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(String inputString) throws InvalidInputException{
 		reset();
 		setInputStringEncode(inputString);
 		encode();
 		return outputString;
 	}
+	/**
+	 * Encodes the given input string using the specified base.
+	 *
+	 * @param base        the base to use for encoding
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidBaseException if the base is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(int base, String inputString) throws InvalidBaseException, InvalidInputException{
 		reset();
 		setBase(base);
@@ -153,13 +232,30 @@ public class BaseX{
 		encode();
 		return outputString;
 	}
-	//Sets the inputString and decodes the message
+	/**
+	 * Decodes the given input string using the current base.
+	 *
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidCharacterException if the input string contains invalid characters
+	 * @throws InvalidInputException     if the input string is invalid
+	 */
 	public String decode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		reset();
 		setInputStringDecode(inputString);
 		decode();
 		return outputString;
 	}
+	/**
+	 * Decodes the given input string using the specified base.
+	 *
+	 * @param base        the base to use for decoding
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidBaseException     if the base is invalid
+	 * @throws InvalidCharacterException if the input string contains invalid characters
+	 * @throws InvalidInputException     if the input string is invalid
+	 */
 	public String decode(int base, String inputString) throws InvalidBaseException, InvalidCharacterException, InvalidInputException{
 		reset();
 		setBase(base);
@@ -168,17 +264,34 @@ public class BaseX{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Gets the current base.
+	 *
+	 * @return the base
+	 */
 	public int getBase(){
 		return base;
 	}
-	//Makes sure all variables are empty
+	/**
+	 * Resets the input and output strings to empty.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Beaufort.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/monosubstitution/Beaufort.java
 //Mattrixwv
 // Created: 02-23-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -12,23 +28,53 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * A class for encoding and decoding strings using the Beaufort cipher,
+ * which is a variant of the Vigenère cipher with additional steps.
+ *
+ * <p>
+ * The Beaufort cipher consists of three main steps:
+ * </p>
+ * <ul>
+ *   <li>Atbash cipher for reversing the string</li>
+ *   <li>Caesar cipher for shifting characters by a fixed amount</li>
+ *   <li>Vigenère cipher for applying a keyword-based shift</li>
+ * </ul>
+ * This class allows you to encode and decode strings with options to preserve
+ * capitalization, whitespace, and symbols.
+ */
 public class Beaufort{
 	private static final Logger logger = LoggerFactory.getLogger(Beaufort.class);
-	//Fields
-	protected String inputString;	//This is the string that needs encoded/decoded
-	protected String outputString;	//This is the string that is output after encoding/decoding
-	protected String keyword;		//This is the keyword that is responsible for determining the offsets that you change each character by
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
-	//Internal ciphers
-	protected Atbash atbash;		//The first step in encoding/decoding the cipher
-	protected Caesar caesar;		//The second step in encoding/decoding the cipher
-	protected Vigenere vigenere;	//The third step in encoding/decoding the cipher
+	//?Fields
+	/** This is the string that needs encoded/decoded */
+	protected String inputString;
+	/** This is the string that is output after encoding/decoding */
+	protected String outputString;
+	/** This is the keyword that is responsible for determining the offsets that you change each character by */
+	protected String keyword;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
+	//?Internal ciphers
+	/** The first step in encoding/decoding the cipher */
+	protected Atbash atbash;
+	/** The second step in encoding/decoding the cipher */
+	protected Caesar caesar;
+	/** The third step in encoding/decoding the cipher */
+	protected Vigenere vigenere;
 
 
-	//Ensures inputString constraints
+	/**
+	 * Sets the input string for encoding or decoding, applying removal options
+	 * for case, whitespace, and symbols.
+	 *
+	 * @param inputString the string to be processed
+	 * @throws InvalidInputException if the input string is null or blank after processing
+	 */
 	public void setInputString(String inputString) throws InvalidInputException{
 		//Make sure the input isn't null
 		if(inputString == null){
@@ -63,7 +109,13 @@ public class Beaufort{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Ensures keyword constraints
+	/**
+	 * Sets the keyword for encoding or decoding, ensuring it contains only
+	 * uppercase letters and is at least 2 letters long.
+	 *
+	 * @param keyword the keyword for the Vigenère cipher
+	 * @throws InvalidKeywordException if the keyword is null, blank, or less than 2 letters
+	 */
 	public void setKeyword(String keyword) throws InvalidKeywordException{
 		//Make sure the keyword isn't null
 		if(keyword == null){
@@ -88,20 +140,38 @@ public class Beaufort{
 			throw new InvalidKeywordException("Keyword must contain at least 2 letters");
 		}
 	}
-	//Encodes the inputString and stores the result in outputString
+	/**
+	 * Encodes the input string using the Beaufort cipher and stores the result in {@code outputString}.
+	 *
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException    if the input string is invalid
+	 */
 	protected void encode() throws InvalidKeywordException, InvalidInputException{
 		logger.debug("Encoding");
 
 		code();
 	}
-	//Decodes the inputString and stores the result in outputString
+	/**
+	 * Decodes the input string using the Beaufort cipher and stores the result in {@code outputString}.
+	 * Decoding is the same process as encoding in this cipher.
+	 *
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException    if the input string is invalid
+	 */
 	protected void decode() throws InvalidKeywordException, InvalidInputException{
 		logger.debug("Decoding");
 
 		//Decoding is just encoding again
 		code();
 	}
-	//Codes input and saves to output
+	/**
+	 * Performs the Beaufort cipher encoding/decoding process:
+	 * <ul>
+	 *   <li>Encodes the input string using the Atbash cipher</li>
+	 *   <li>Shifts the result by 1 using the Caesar cipher</li>
+	 *   <li>Applies the Vigenère cipher using the keyword</li>
+	 * </ul>
+	 */
 	protected void code(){
 		//Reverse the string
 		logger.debug("Encoding with Atbash");
@@ -120,7 +190,10 @@ public class Beaufort{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code Beaufort} instance with default settings.
+	 */
 	public Beaufort(){
 		preserveCapitals = false;
 		preserveWhitespace = false;
@@ -130,6 +203,13 @@ public class Beaufort{
 		vigenere = new Vigenere(false, false, false);
 		reset();
 	}
+	/**
+	 * Constructs a new {@code Beaufort} instance with specified settings.
+	 *
+	 * @param preserveCapitals   whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols    whether to preserve symbols in the output
+	 */
 	public Beaufort(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -140,7 +220,15 @@ public class Beaufort{
 		reset();
 	}
 
-	//Encodes inputString using keyword and returns the result
+	 /**
+	 * Encodes the input string using the specified keyword.
+	 *
+	 * @param keyword     the keyword for the Vigenère cipher
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException    if the input string is invalid
+	 */
 	public String encode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		//Set the parameters
 		setKeyword(keyword);
@@ -150,7 +238,15 @@ public class Beaufort{
 		encode();
 		return outputString;
 	}
-	//Decodes inputString using keyword and returns the result
+	/**
+	 * Decodes the input string using the specified keyword.
+	 *
+	 * @param keyword     the keyword for the Vigenère cipher
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException    if the input string is invalid
+	 */
 	public String decode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		//Set the parameters
 		setKeyword(keyword);
@@ -161,17 +257,34 @@ public class Beaufort{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Gets the current keyword.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
-	//Makes sure all variables are empty
+	/**
+	 * Resets the input string, output string, and keyword to empty.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Caesar.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/monosubstitution/Caesar.java
 //Matthew Ellison
 // Created: 07-25-21
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -11,19 +27,39 @@ import org.slf4j.LoggerFactory;
 import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 
 
+/**
+ * A class for encoding and decoding strings using the Caesar cipher.
+ *
+ * <p>
+ * The Caesar cipher is a substitution cipher where each letter in the
+ * plaintext is shifted a fixed number of places down or up the alphabet.
+ * This class allows you to encode and decode strings with options to preserve
+ * capitalization, whitespace, and symbols.
+ * </p>
+ */
 public class Caesar{
 	private static final Logger logger = LoggerFactory.getLogger(Caesar.class);
-	//Fields
-	protected String inputString;	//The string that needs encoded/decoded
-	protected String outputString;	//The encoded/decoded string
-	protected int shift;	//The amount that you need to shift each letter
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	//?Fields
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded string */
+	protected String outputString;
+	/** The amount that you need to shift each letter */
+	protected int shift;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Sets shift and makes sure it is within the propper bounds
+	/**
+	 * Sets the shift amount and ensures it is within the proper bounds (0-25).
+	 *
+	 * @param shiftAmount the amount to shift each letter
+	 */
 	protected void setShift(int shiftAmount){
 		logger.debug("Setting shift {}", shiftAmount);
 
@@ -32,7 +68,13 @@ public class Caesar{
 
 		logger.debug("Cleaned shift {}", shift);
 	}
-	//Sets the input string
+	/**
+	 * Sets the input string for encoding or decoding, applying removal options
+	 * for case, whitespace, and symbols.
+	 *
+	 * @param inputString the string to be processed
+	 * @throws InvalidInputException if the input string is null or blank after processing
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -63,7 +105,9 @@ public class Caesar{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Encodes the inputString and stores the result in outputString
+	/**
+	 * Encodes the input string by shifting letters according to the Caesar cipher.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -111,7 +155,9 @@ public class Caesar{
 		outputString = output.toString();
 		logger.debug("Saving encoded string '{}'", outputString);
 	}
-	//Decodes the inputString and stores the result in outputString
+	/**
+	 * Decodes the input string by reversing the shift applied during encoding.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -164,13 +210,23 @@ public class Caesar{
 		logger.debug("Saving decoded string '{}'", outputString);
 	}
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code Caesar} instance with default settings.
+	 */
 	public Caesar(){
 		reset();
 		preserveCapitals = false;
 		preserveWhitespace = false;
 		preserveSymbols = false;
 	}
+	/**
+	 * Constructs a new {@code Caesar} instance with specified settings.
+	 *
+	 * @param preserveCapitals   whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols    whether to preserve symbols in the output
+	 */
 	public Caesar(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		reset();
 		this.preserveCapitals = preserveCapitals;
@@ -178,7 +234,14 @@ public class Caesar{
 		this.preserveSymbols = preserveSymbols;
 	}
 
-	//Sets the shift and inputString and encodes the message
+	/**
+	 * Encodes the input string with the specified shift amount.
+	 *
+	 * @param shiftAmount the amount to shift each letter
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(int shiftAmount, String inputString) throws InvalidInputException{
 		reset();
 		setShift(shiftAmount);
@@ -186,7 +249,14 @@ public class Caesar{
 		encode();
 		return outputString;
 	}
-	//Sets the shift and inputString and decodes the message
+	/**
+	 * Decodes the input string with the specified shift amount.
+	 *
+	 * @param shiftAmount the amount to shift each letter
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String decode(int shiftAmount, String inputString) throws InvalidInputException{
 		reset();
 		setShift(shiftAmount);
@@ -195,17 +265,34 @@ public class Caesar{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current shift amount.
+	 *
+	 * @return the shift amount
+	 */
 	public int getShift(){
 		return shift;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
-	//Makes sure all variables are empty
+	/**
+	 * Resets the internal fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/monosubstitution/OneTimePad.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/monosubstitution/OneTimePad.java
 //Mattrixwv
 // Created: 02-23-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -12,21 +28,51 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * A class for encoding and decoding strings using the One-Time Pad cipher,
+ * which is a special case of the Vigenère cipher where the key is as long as
+ * the input message and used only once.
+ *
+ * <p>
+ * The One-Time Pad cipher provides perfect secrecy when the key is truly random,
+ * as long as the key length is equal to or greater than the length of the message
+ * and the key is used only once.
+ * </p>
+ */
 public class OneTimePad extends Vigenere{
 	private static final Logger logger = LoggerFactory.getLogger(OneTimePad.class);
 
 	//?Add some kind of entropy calculator?
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code OneTimePad} instance with default settings.
+	 */
 	public OneTimePad(){
 		super();
 	}
+	/**
+	 * Constructs a new {@code OneTimePad} instance with specified settings.
+	 *
+	 * @param preserveCapitals   whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols    whether to preserve symbols in the output
+	 */
 	public OneTimePad(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		super(preserveCapitals, preserveWhitespace, preserveSymbols);
 	}
 
-	//Encodes input using key and returns the result
+	/**
+	 * Encodes the input string using the One-Time Pad cipher with the provided key.
+	 * The key must be at least as long as the input string.
+	 *
+	 * @param keyword   the key to use for encoding
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if the key is shorter than the input string
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	@Override
 	public String encode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		if(keyword.length() < inputString.length()){
@@ -37,7 +83,16 @@ public class OneTimePad extends Vigenere{
 
 		return super.encode(keyword, inputString);
 	}
-	//Decodes input using key and returns the result
+	/**
+	 * Decodes the input string using the One-Time Pad cipher with the provided key.
+	 * The key must be at least as long as the input string.
+	 *
+	 * @param keyword   the key to use for decoding
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if the key is shorter than the input string
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	@Override
 	public String decode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		if(keyword.length() < inputString.length()){

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Porta.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/monosubstitution/Porta.java
 //Mattrixwv
 // Created: 02-28-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -12,9 +28,22 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * A class for encoding and decoding strings using the Porta cipher,
+ * which is a variant of the Vigenère cipher that uses a tableau of
+ * alphabets to encode and decode messages.
+ *
+ * <p>
+ * The Porta cipher uses a series of Caesar ciphers based on a repeating
+ * keyword, with a pre-defined set of alphabetic shifts. This implementation
+ * allows for encoding and decoding of messages while preserving or removing
+ * certain characters based on configuration settings.
+ * </p>
+ */
 public class Porta{
 	private static final Logger logger = LoggerFactory.getLogger(Porta.class);
 
+	/** Predefined alphabetic tableau used for encoding and decoding */
 	private static final String[] tableau = {
 		"NOPQRSTUVWXYZABCDEFGHIJKLM",	//A-B
 		"OPQRSTUVWXYZNMABCDEFGHIJKL",	//C-D
@@ -31,17 +60,28 @@ public class Porta{
 		"ZNOPQRSTUVWXYBCDEFGHIJKLMA"	//Y-Z
 	};
 
-	//Fields
-	protected String inputString;	//The string that needs encoded/decoded
-	protected String outputString;	//The encoded/decoded string
-	protected String keyword;		//The keyword used to encode the input string
-	//Settings
-	protected boolean preserveCapitals;	//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;	//Persist symbols in the output string
+	//?Fields
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded string */
+	protected String outputString;
+	/** The keyword used to encode the input string */
+	protected String keyword;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Ensure all keyword constraints are followed
+	/**
+	 * Ensures all keyword constraints are followed.
+	 *
+	 * @param keyword the keyword to be used for encoding/decoding
+	 * @throws InvalidKeywordException if the keyword is null, empty, or less than 2 characters
+	 */
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		//Make sure the keyword isn't null
 		if(keyword == null){
@@ -67,7 +107,12 @@ public class Porta{
 			throw new InvalidKeywordException("Keyword must contain at least 2 letters");
 		}
 	}
-	//Ensure all input constraints are followed
+	/**
+	 * Ensures all input constraints are followed.
+	 *
+	 * @param inputString the string to be encoded/decoded
+	 * @throws InvalidInputException if the input string is null or blank
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		//Ensure the input isn't null
 		if(inputString == null){
@@ -102,7 +147,13 @@ public class Porta{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Returns the letter that replaces the passed in letter
+	/**
+	 * Returns the letter that replaces the passed-in letter based on the keyword and tableau.
+	 *
+	 * @param keywordCnt the index of the keyword character to use
+	 * @param letter     the letter to be replaced
+	 * @return the replacement letter
+	 */
 	protected char getReplacer(int keywordCnt, char letter){
 		logger.debug("Getting letter that replaces {} at {}", letter, keywordCnt);
 
@@ -130,21 +181,30 @@ public class Porta{
 		logger.debug("Replacer {}", replacer);
 		return replacer;
 	}
-	//Encodes the inputString and stores the result in outputString
+	/**
+	 * Encodes the inputString and stores the result in outputString.
+	 * Encoding is the same as decoding for this cipher.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
 		//Encoding is the same as decoding
 		code();
 	}
-	//Decodes the inputString and stores the result in outputString
+	/**
+	 * Decodes the inputString and stores the result in outputString.
+	 * Decoding is the same as encoding for this cipher.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
 		//Decoding is the same as encoding
 		code();
 	}
-	//Codes the inputString and stores the result in outputString
+	/**
+	 * Encodes or decodes the inputString based on the provided keyword.
+	 * Uses the tableau to replace characters.
+	 */
 	protected void code(){
 		StringBuilder output = new StringBuilder();
 
@@ -175,13 +235,23 @@ public class Porta{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code Porta} instance with default settings.
+	 */
 	public Porta(){
 		preserveCapitals = false;
 		preserveWhitespace = false;
 		preserveSymbols = false;
 		reset();
 	}
+	/**
+	 * Constructs a new {@code Porta} instance with specified settings.
+	 *
+	 * @param preserveCapitals   whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols    whether to preserve symbols in the output
+	 */
 	public Porta(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -189,7 +259,15 @@ public class Porta{
 		reset();
 	}
 
-	//Sets the keyword and inputString and encodes the message
+	/**
+	 * Sets the keyword and inputString and encodes the message.
+	 *
+	 * @param keyword   the keyword to use for encoding
+	 * @param inputString the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	public String encode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		//Set the parameters
 		reset();
@@ -200,7 +278,15 @@ public class Porta{
 		encode();
 		return outputString;
 	}
-	//Sets the keyword and inputString and decodes the message
+	/**
+	 * Sets the keyword and inputString and decodes the message.
+	 *
+	 * @param keyword   the keyword to use for decoding
+	 * @param inputString the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	public String decode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		//Set the parameters
 		reset();
@@ -212,17 +298,34 @@ public class Porta{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Gets the current keyword.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
-	//Makes sure all fields are empty
+	/**
+	 * Resets all fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Substitution.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/monosubstitution/Substitution.java
 //Mattrixwv
 // Created: 02-22-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -12,19 +28,41 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * A class for encoding and decoding strings using a substitution cipher.
+ * This cipher can handle both alphabetic and alphanumeric keys and supports
+ * preserving or removing capitalization, whitespace, and symbols.
+ *
+ * <p>
+ * The substitution cipher replaces each letter or digit in the input string
+ * with a corresponding character from a key. The key must contain all letters
+ * of the alphabet and optionally digits, without duplicates.
+ * </p>
+ */
 public class Substitution{
 	private static final Logger logger = LoggerFactory.getLogger(Substitution.class);
-	//Fields
-	protected String inputString;	//The string that needs encoded/decoded
-	protected String outputString;	//The encoded/decoded string
-	protected String keyword;		//The keyword used to encode/decode the input
-	//Getters
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	//?Fields
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded string */
+	protected String outputString;
+	/** The keyword used to encode/decode the input */
+	protected String keyword;
+	//?Getters
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Ensures key constraints are followed
+	/**
+	 * Ensures all key constraints are followed.
+	 *
+	 * @param key the key to be used for encoding/decoding
+	 * @throws InvalidKeywordException if the key is null, contains duplicates, or has invalid length
+	 */
 	protected void setKeyword(String key) throws InvalidKeywordException{
 		if(key == null){
 			throw new InvalidKeywordException("Key cannot be null");
@@ -71,7 +109,12 @@ public class Substitution{
 		logger.debug("Cleaned key '{}'", key);
 		this.keyword = key;
 	}
-	//Ensure intput constraints are followed
+	/**
+	 * Ensures all input constraints are followed.
+	 *
+	 * @param inputString the string to be encoded/decoded
+	 * @throws InvalidInputException if the input string is null or blank
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -105,7 +148,9 @@ public class Substitution{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Encodes the inputString and stores the result in outputString
+	/**
+	 * Encodes the inputString using the provided key and stores the result in outputString.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -137,7 +182,9 @@ public class Substitution{
 		this.outputString = output.toString();
 		logger.debug("Encoded message '{}'", outputString);
 	}
-	//Decodes the inputString and stores the result in outputString
+	/**
+	 * Decodes the inputString using the provided key and stores the result in outputString.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -173,13 +220,23 @@ public class Substitution{
 		logger.debug("Decoded message '{}'", outputString);
 	}
 
-	//Constructors
+	//?Constructors
+	/**
+	 * Constructs a new {@code Substitution} instance with default settings.
+	 */
 	public Substitution(){
 		preserveCapitals = false;
 		preserveWhitespace = false;
 		preserveSymbols = false;
 		reset();
 	}
+	/**
+	 * Constructs a new {@code Substitution} instance with specified settings.
+	 *
+	 * @param preserveCapitals   whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols    whether to preserve symbols in the output
+	 */
 	public Substitution(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -187,14 +244,30 @@ public class Substitution{
 		reset();
 	}
 
-	//Encodes inputString using the provided key
+	/**
+	 * Encodes the inputString using the provided key.
+	 *
+	 * @param key          the key to use for encoding
+	 * @param inputString  the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if the key is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	public String encode(String key, String inputString) throws InvalidKeywordException, InvalidInputException{
 		setKeyword(key);
 		setInputString(inputString);
 		encode();
 		return outputString;
 	}
-	//Decodes inputString using the provided key
+	/**
+	 * Decodes the inputString using the provided key.
+	 *
+	 * @param key          the key to use for decoding
+	 * @param inputString  the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if the key is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	public String decode(String key, String inputString) throws InvalidKeywordException, InvalidInputException{
 		setKeyword(key);
 		setInputString(inputString);
@@ -202,17 +275,34 @@ public class Substitution{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Gets the current keyword.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
-	//Makes sure all variables are empty
+	/**
+	 * Resets all fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/monosubstitution/Vigenere.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/monosubstitution/Vigenere.java
 //Matthew Ellison
 // Created: 07-25-21
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.monosubstitution;
 
 
@@ -15,20 +31,38 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * A class for encoding and decoding strings using the Vigenère cipher.
+ * This cipher uses a keyword to determine the shift for each character in the input string.
+ *
+ * <p>
+ * The Vigenère cipher applies a series of Caesar ciphers based on the letters of a keyword.
+ * The keyword determines the shift for each letter in the input string.
+ * </p>
+ */
 public class Vigenere{
 	private static final Logger logger = LoggerFactory.getLogger(Vigenere.class);
 	//Fields
-	protected String inputString;	//This is the string that needs encoded/decoded
-	protected String outputString;	//This is the string that is output after encoding/decoding
-	protected String keyword;		//This is the keyword that is resposible for determining the offsets that you change each character by
-	protected ArrayList<Integer> offset;	//Holds the offsets coputed from each character in the keyword
+	/** This is the string that needs encoded/decoded */
+	protected String inputString;
+	/** This is the string that is output after encoding/decoding */
+	protected String outputString;
+	/** This is the keyword that is resposible for determining the offsets that you change each character by */
+	protected String keyword;
+	/** Holds the offsets coputed from each character in the keyword */
+	protected ArrayList<Integer> offset;
 	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Uses keyword to calculate the offset for the Caesar cipher for each character
+	/**
+	 * Calculates the offsets for the Vigenère cipher from the keyword.
+	 */
 	protected void setOffset(){
 		logger.debug("Setting offset array from keyword");
 
@@ -43,7 +77,12 @@ public class Vigenere{
 
 		logger.debug("Offset {}", offset);
 	}
-	//Sets inputString
+	/**
+	 * Sets the input string and applies transformation settings.
+	 *
+	 * @param inputString the string to be encoded/decoded
+	 * @throws InvalidInputException if the input string is null or blank
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -74,7 +113,12 @@ public class Vigenere{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Sets keyword
+	/**
+	 * Sets the keyword for the Vigenère cipher and computes the offsets.
+	 *
+	 * @param keyword the keyword to be used for encoding/decoding
+	 * @throws InvalidKeywordException if the keyword is null, too short, or contains invalid characters
+	 */
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		if(keyword == null){
 			throw new InvalidKeywordException("Keyword cannot be null");
@@ -102,7 +146,9 @@ public class Vigenere{
 			throw new InvalidKeywordException("Keyword must contain at least 2 letters");
 		}
 	}
-	//Encodes inputString and stores the result in outputString
+	/**
+	 * Encodes the input string using the Vigenère cipher and stores the result.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -147,7 +193,9 @@ public class Vigenere{
 		outputString = output.toString();
 		logger.debug("Encoded message '{}'", outputString);
 	}
-	//Decodes inputString and stores the result in outputString
+	/**
+	 * Decodes the input string using the Vigenère cipher and stores the result.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -194,7 +242,10 @@ public class Vigenere{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a new {@code Vigenere} instance with default settings.
+	 */
 	public Vigenere(){
 		offset = new ArrayList<>();
 		reset();
@@ -202,6 +253,13 @@ public class Vigenere{
 		preserveWhitespace = false;
 		preserveSymbols = false;
 	}
+	/**
+	 * Constructs a new {@code Vigenere} instance with specified settings.
+	 *
+	 * @param preserveCapitals   whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols    whether to preserve symbols in the output
+	 */
 	public Vigenere(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		offset = new ArrayList<>();
 		reset();
@@ -210,7 +268,15 @@ public class Vigenere{
 		this.preserveSymbols = preserveSymbols;
 	}
 
-	//Encodes input using key and returns the result
+	/**
+	 * Encodes the input string using the provided keyword.
+	 *
+	 * @param keyword      the keyword to use for encoding
+	 * @param inputString  the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	public String encode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		reset();
 		setKeyword(keyword);
@@ -218,7 +284,15 @@ public class Vigenere{
 		encode();
 		return outputString;
 	}
-	//Decodes input using key and returns the result
+	/**
+	 * Decodes the input string using the provided keyword.
+	 *
+	 * @param keyword      the keyword to use for decoding
+	 * @param inputString  the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 */
 	public String decode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		reset();
 		setKeyword(keyword);
@@ -227,21 +301,42 @@ public class Vigenere{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Gets the current keyword.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
+	/**
+	 * Gets the current offset list.
+	 *
+	 * @return the offset list
+	 */
 	public List<Integer> getOffsets(){
 		return offset;
 	}
-
-	//Makes sure all variables are empty
+	/**
+	 * Resets all fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/polysubstitution/Bifid.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/polysubstitution/Bifid.java
 //Mattrixwv
 // Created: 03-03-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -13,21 +29,44 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * A class for encoding and decoding strings using the Bifid cipher.
+ * The Bifid cipher is a polygraphic substitution cipher that uses a Polybius square
+ * and applies a columnar transposition to encode or decode messages.
+ *
+ * <p>
+ * The Bifid cipher operates by converting the plaintext message into coordinates based on a
+ * Polybius square, then rearranges these coordinates using a transposition before converting
+ * them back into text.
+ * </p>
+ */
 public class Bifid{
 	private static final Logger logger = LoggerFactory.getLogger(Bifid.class);
-	//Fields
-	protected String inputString;	//The message that needs to be encoded/decoded
-	protected String outputString;	//The encoded/decoded message
-	protected String keyword;		//The keyword used to create the grid
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
-	//Internal ciphers
-	protected PolybiusSquare polybiusSquare;	//Used to encode the message to numbers then back into letters
+	//?Fields
+	/** The message that needs to be encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded message */
+	protected String outputString;
+	/** The keyword used to create the grid */
+	protected String keyword;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
+	//?Internal ciphers
+	/** Used to encode the message to numbers then back into letters */
+	protected PolybiusSquare polybiusSquare;
 
 
-	//Strips invalid characters from the keyword and creates the grid
+	/**
+	 * Sets the keyword for creating the Polybius square.
+	 *
+	 * @param keyword the keyword to use for the Polybius square
+	 * @throws InvalidKeywordException if the keyword is null
+	 */
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		//Ensure the keyword isn't null
 		if(keyword == null){
@@ -39,7 +78,12 @@ public class Bifid{
 		//Save the key for polybius to deal with
 		this.keyword = keyword;
 	}
-	//Ensures inputString constraints
+	/**
+	 * Validates and preprocesses the input string based on the current settings.
+	 *
+	 * @param inputString the string to be encoded/decoded
+	 * @throws InvalidInputException if the input string is null or blank
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		//Ensure the input string isn't null
 		if(inputString == null){
@@ -74,7 +118,11 @@ public class Bifid{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Adds all non-letter characters back to the output string
+	/**
+	 * Formats the encoded/decoded output to match the input string's original format.
+	 *
+	 * @param outputString the encoded/decoded message to be formatted
+	 */
 	protected void formatOutput(String outputString){
 		logger.debug("Formatting output");
 		//Keep track of where you are in the output
@@ -104,7 +152,12 @@ public class Bifid{
 		this.outputString = output.toString();
 		logger.debug("Formatted output string '{}'", this.outputString);
 	}
-	//Encodes inputString using a polybius square and stores the result in outputString
+	/**
+	 * Encodes the input string using the Bifid cipher and stores the result in outputString.
+	 *
+	 * @throws InvalidCharacterException if there are invalid characters in the input
+	 * @throws InvalidInputException     if the input string is invalid
+	 */
 	protected void encode() throws InvalidCharacterException, InvalidInputException{
 		logger.debug("Encoding");
 
@@ -140,7 +193,12 @@ public class Bifid{
 		//Format the output
 		formatOutput(letterResult);
 	}
-	//Decodes inputString using a polybius square and stores the result in outputString
+	/**
+	 * Decodes the input string using the Bifid cipher and stores the result in outputString.
+	 *
+	 * @throws InvalidCharacterException if there are invalid characters in the input
+	 * @throws InvalidInputException     if the input string is invalid
+	 */
 	protected void decode() throws InvalidCharacterException, InvalidInputException{
 		logger.debug("Decoding");
 
@@ -170,7 +228,12 @@ public class Bifid{
 	}
 
 
-	//Constructors
+	//?Constructors
+	/**
+	 * Constructs a new {@code Bifid} instance with default settings.
+	 *
+	 * @throws InvalidCharacterException if initialization of PolybiusSquare fails
+	 */
 	public Bifid() throws InvalidCharacterException{
 		preserveCapitals = false;
 		preserveWhitespace = false;
@@ -178,6 +241,14 @@ public class Bifid{
 		polybiusSquare = new PolybiusSquare(false, false);
 		reset();
 	}
+	/**
+	 * Constructs a new {@code Bifid} instance with specified settings.
+	 *
+	 * @param preserveCapitals   whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols    whether to preserve symbols in the output
+	 * @throws InvalidCharacterException if initialization of PolybiusSquare fails
+	 */
 	public Bifid(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -186,7 +257,16 @@ public class Bifid{
 		reset();
 	}
 
-	//Encodes inputString using keyword and returns the result
+	/**
+	 * Encodes the input string using the provided keyword.
+	 *
+	 * @param keyword      the keyword to use for encoding
+	 * @param inputString  the string to be encoded
+	 * @return the encoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 * @throws InvalidCharacterException if the input contains invalid characters
+	 */
 	public String encode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		//Set the parameters
 		reset();
@@ -197,7 +277,16 @@ public class Bifid{
 		encode();
 		return outputString;
 	}
-	//Decodes inputString using keyword and returns the result
+	/**
+	 * Decodes the input string using the provided keyword.
+	 *
+	 * @param keyword      the keyword to use for decoding
+	 * @param inputString  the string to be decoded
+	 * @return the decoded string
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException   if the input string is invalid
+	 * @throws InvalidCharacterException if the input contains invalid characters
+	 */
 	public String decode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		//Set the parameters
 		reset();
@@ -209,18 +298,34 @@ public class Bifid{
 		return outputString;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Gets the current keyword.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
-
-	//Makes sure all variables are empty
+	/**
+	 * Resets all fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 

src/main/java/com/mattrixwv/cipherstream/polysubstitution/Columnar.java

@@ -1,7 +1,23 @@
 //MattrixwvWebsite/src/main/java/com/mattrixwv/cipherstream/polysubstitution/Columnar.java
 //Mattrixwv
 // Created: 01-16-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -17,28 +33,54 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * This class implements the Columnar Transposition cipher for encoding and decoding messages.
+ * The Columnar Transposition cipher rearranges the letters of the plaintext based on a keyword,
+ * and then reads the message column-wise to produce the encoded output. For decoding, it reverses
+ * this process.
+ * <p>
+ * This class provides methods to configure the cipher, process input strings, and generate output.
+ * It also includes options to preserve capitalization, whitespace, symbols, and to handle padding characters.
+ * </p>
+ */
 public class Columnar{
 	private static final Logger logger = LoggerFactory.getLogger(Columnar.class);
-	//Fields
-	protected String inputString;	//The message that needs to be encoded/decoded
-	protected String outputString;	//The encoded/decoded message
-	protected String keyword;		//The keyword used to create the grid
-	protected char characterToAdd;	//The character that is added to the end of a string to bring it to the correct length
-	protected int charsAdded;		//The number of characters that were added to the end of the message
-	protected ArrayList<ArrayList<Character>> grid;	//The grid used to encode/decode the message
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
-	protected boolean removePadding;		//Remove the padding letters added to the cipher
+	//?Fields
+	/** The message that needs to be encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded message */
+	protected String outputString;
+	/** The keyword used to create the grid */
+	protected String keyword;
+	/** The character that is added to the end of a string to bring it to the correct length */
+	protected char characterToAdd;
+	/** The number of characters that were added to the end of the message */
+	protected int charsAdded;
+	/** The grid used to encode/decode the message */
+	protected ArrayList<ArrayList<Character>> grid;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
+	/** Remove the padding letters added to the cipher */
+	protected boolean removePadding;
 
 
-	//Strip the inputString of all non-letter characters and change them to capitals
+	/**
+	 * Strip the inputString of all non-letter characters and change them to capitals
+	 *
+	 * @return The input string in capital letters with all non-letter characters removed
+	 */
 	protected String getCleanInputString(){
 		logger.debug("Cleaning input string");
 		return inputString.toUpperCase().replaceAll("[^A-Z]", "");
 	}
-	//Create the grid from the keyword
+	/**
+	 * Creates the grid used for encoding.
+	 */
 	protected void createGridEncode(){
 		logger.debug("Creating grid for encoding");
 
@@ -58,6 +100,9 @@ public class Columnar{
 			)));
 		}
 	}
+	/**
+	 * Creates the grid used for decoding.
+	 */
 	protected void createGridDecode(){
 		logger.debug("Creating grid for decoding");
 
@@ -86,7 +131,12 @@ public class Columnar{
 			}
 		}
 	}
-	//Strips invalid characters from the string that needs encoded/decoded
+	/**
+	 * Sets the input string for encoding, applying necessary modifications and padding.
+	 *
+	 * @param inputString the input string to encode
+	 * @throws InvalidInputException if the input string is null or blank
+	 */
 	protected void setInputStringEncode(String inputString) throws InvalidInputException{
 		logger.debug("Setting input string for encoding");
 
@@ -140,6 +190,12 @@ public class Columnar{
 			throw new InvalidInputException("Input cannot be blank");
 		}
 	}
+	/**
+	 * Sets the input string for decoding, applying necessary adjustments and padding.
+	 *
+	 * @param inputString the input string to decode
+	 * @throws InvalidInputException if the input string is null or blank
+	 */
 	protected void setInputStringDecode(String inputString) throws InvalidInputException{
 		logger.debug("Setting input string for decoding");
 
@@ -225,7 +281,9 @@ public class Columnar{
 			throw new InvalidInputException("Input cannot be blank");
 		}
 	}
-	//Creates the output string from the grid
+	/**
+	 * Creates the output string by reading the columns of the grid.
+	 */
 	protected void createOutputStringFromColumns(){
 		logger.debug("Creating output string for encoding");
 
@@ -275,6 +333,9 @@ public class Columnar{
 		outputString = output.toString();
 		logger.debug("Output string '{}'", outputString);
 	}
+	/**
+	 * Creates the output string by reading the rows of the grid.
+	 */
 	protected void createOutputStringFromRows(){
 		logger.debug("Creating output string for decoding");
 
@@ -345,7 +406,12 @@ public class Columnar{
 		outputString = output.toString();
 		logger.debug("Decoded output string '{}'", outputString);
 	}
-	//Strips invalid characters from the keyword and creates the grid
+	/**
+	 * Sets the keyword used for encoding or decoding.
+	 *
+	 * @param keyword the keyword to use
+	 * @throws InvalidKeywordException if the keyword is null, contains less than 2 letters, or contains invalid characters
+	 */
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		//Ensure the keyword isn't null
 		if(keyword == null){
@@ -365,7 +431,12 @@ public class Columnar{
 			throw new InvalidKeywordException("The keyword must contain at least 2 letters");
 		}
 	}
-	//Set the character that is added to the end of the string
+	/**
+	 * Sets the character used for padding.
+	 *
+	 * @param characterToAdd the padding character
+	 * @throws InvalidCharacterException if the padding character is not a letter
+	 */
 	protected void setCharacterToAdd(char characterToAdd) throws InvalidCharacterException{
 		if(!Character.isAlphabetic(characterToAdd)){
 			throw new InvalidCharacterException("Character to add must be a letter");
@@ -381,7 +452,11 @@ public class Columnar{
 
 		logger.debug("Character to add for padding {}", characterToAdd);
 	}
-	//Returns a list of integers that represents the location of the characters of the keyword in alphabetic order
+	/**
+	 * Gets the positions of the keyword characters in alphabetical order.
+	 *
+	 * @return the list of positions of keyword characters in alphabetical order
+	 */
 	protected ArrayList<Integer> getKeywordAlphaLocations(){
 		logger.debug("Creating an array of keyword letter locations");
 
@@ -400,6 +475,11 @@ public class Columnar{
 		logger.debug("Array of keyword letters {}", orderedLocations);
 		return orderedLocations;
 	}
+	/**
+	 * Gets the original positions of the keyword characters.
+	 *
+	 * @return the list of original positions of keyword characters
+	 */
 	protected ArrayList<Integer> getKeywordOriginalLocations(){
 		logger.debug("Creating array of original keyword locations");
 
@@ -420,7 +500,11 @@ public class Columnar{
 		logger.debug("Array of keyword letters {}", originalOrder);
 		return originalOrder;
 	}
-	//Rearanges the grid based on the list of numbers given
+	/**
+	 * Rearranges the grid based on the specified order.
+	 *
+	 * @param listOrder the order in which columns should be rearranged
+	 */
 	protected void rearangeGrid(ArrayList<Integer> listOrder){
 		logger.debug("Rearanging grid");
 
@@ -442,7 +526,9 @@ public class Columnar{
 		logger.debug("New grid {}", newGrid);
 		grid = newGrid;
 	}
-	//Encodes inputString using the Columnar cipher and stores the result in outputString
+	/**
+	 * Encodes the input string using the Columnar cipher.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -455,7 +541,9 @@ public class Columnar{
 		//Create the output
 		createOutputStringFromColumns();
 	}
-	//Decodes inputString using the Columnar cipher and stores the result in outputString
+	/**
+	 * Decodes the input string using the Columnar cipher.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -468,7 +556,13 @@ public class Columnar{
 		createOutputStringFromRows();
 	}
 
-	//Constructors
+	//?Constructors
+	/**
+	 * Constructs a new Columnar cipher instance with default settings.
+	 * The default settings include preserving no capitalization, whitespace, or symbols, and using 'x' as the padding character.
+	 *
+	 * @throws InvalidCharacterException if the default padding character is invalid
+	 */
 	public Columnar() throws InvalidCharacterException{
 		preserveCapitals = false;
 		preserveWhitespace = false;
@@ -477,6 +571,15 @@ public class Columnar{
 		setCharacterToAdd('x');
 		reset();
 	}
+	/**
+	 * Constructs a new Columnar cipher instance with customizable settings.
+	 *
+	 * @param preserveCapitals whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols whether to preserve symbols in the output
+	 * @param removePadding whether to remove padding characters from the output
+	 * @throws InvalidCharacterException if the default padding character is invalid
+	 */
 	public Columnar(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols, boolean removePadding) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -485,6 +588,16 @@ public class Columnar{
 		setCharacterToAdd('x');
 		reset();
 	}
+	/**
+	 * Constructs a new Columnar cipher instance with customizable settings and a specific padding character.
+	 *
+	 * @param preserveCapitals whether to preserve capitalization in the output
+	 * @param preserveWhitespace whether to preserve whitespace in the output
+	 * @param preserveSymbols whether to preserve symbols in the output
+	 * @param removePadding whether to remove padding characters from the output
+	 * @param characterToAdd the character to use for padding
+	 * @throws InvalidCharacterException if the padding character is not a letter
+	 */
 	public Columnar(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols, boolean removePadding, char characterToAdd) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -494,7 +607,15 @@ public class Columnar{
 		reset();
 	}
 
-	//Encodes inputString using keyword and returns the result
+	/**
+	 * Encodes the given input string using the provided keyword.
+	 *
+	 * @param keyword the keyword used for encoding
+	 * @param inputString the message to encode
+	 * @return the encoded message
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		//Set the parameters
 		reset();
@@ -505,7 +626,15 @@ public class Columnar{
 		encode();
 		return outputString;
 	}
-	//Encodes inputString using keyword and returns the result
+	/**
+	 * Decodes the given input string using the provided keyword.
+	 *
+	 * @param keyword the keyword used for decoding
+	 * @param inputString the message to decode
+	 * @return the decoded message
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String decode(String keyword, String inputString) throws InvalidKeywordException, InvalidInputException{
 		//Set the parameters
 		reset();
@@ -517,7 +646,9 @@ public class Columnar{
 		return outputString;
 	}
 
-	//Makes sure all variables are empty
+	/**
+	 * Resets all fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 
@@ -528,13 +659,28 @@ public class Columnar{
 		charsAdded = 0;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Gets the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Gets the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Gets the current keyword.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}

src/main/java/com/mattrixwv/cipherstream/polysubstitution/Hill.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/polysubstitution/Hill.java
 //Mattrixwv
 // Created: 01-31-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -18,20 +34,39 @@ import com.mattrixwv.matrix.exceptions.InvalidGeometryException;
 import com.mattrixwv.matrix.exceptions.InvalidScalarException;
 
 
+/**
+ * Implements the Hill cipher for encoding and decoding messages using matrix operations.
+ * <p>
+ * The Hill cipher is a polygraphic substitution cipher that uses linear algebra to encrypt and decrypt
+ * messages. It operates on blocks of text by representing them as vectors and applying matrix transformations.
+ * </p>
+ */
 public class Hill{
 	private static final Logger logger = LoggerFactory.getLogger(Hill.class);
-	//Fields
-	protected String inputString;	//The message that needs to be encoded/decoded
-	protected String outputString;	//The encoded/decoded message
-	protected char characterToAdd;	//The keyword used to create the grid
-	protected ModMatrix key;		//The matrix used perform the encoding/decoding
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	//?Fields
+	/** The message that needs to be encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded message */
+	protected String outputString;
+	/** The keyword used to create the grid */
+	protected char characterToAdd;
+	/** The matrix used perform the encoding/decoding */
+	protected ModMatrix key;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Validate and set the key
+	/**
+	 * Sets the key matrix for the Hill cipher after validating it.
+	 *
+	 * @param key the matrix to be used for encoding/decoding
+	 * @throws InvalidKeyException if the key is not a square matrix, or does not have an inverse modulo 26
+	 */
 	protected void setKey(ModMatrix key) throws InvalidKeyException{
 		logger.debug("Setting key");
 
@@ -60,7 +95,13 @@ public class Hill{
 		logger.debug("key\n{}", key);
 		this.key = new ModMatrix(key);
 	}
-	//Validate and set the input string
+	/**
+	 * Prepares and validates the input string for encoding by removing unwanted characters
+	 * and ensuring the length is appropriate.
+	 *
+	 * @param inputString the message to be encoded
+	 * @throws InvalidInputException if the input is null, blank, or its length is not a multiple of the matrix size
+	 */
 	protected void setInputStringEncode(String inputString) throws InvalidInputException{
 		logger.debug("Setting input string for encoding");
 
@@ -111,6 +152,13 @@ public class Hill{
 			throw new InvalidInputException("Input cannot be blank");
 		}
 	}
+	/**
+	 * Prepares and validates the input string for decoding by removing unwanted characters
+	 * and ensuring the length is appropriate.
+	 *
+	 * @param inputString the message to be decoded
+	 * @throws InvalidInputException if the input is null, blank, or its length is not a multiple of the matrix size
+	 */
 	protected void setInputStringDecode(String inputString) throws InvalidInputException{
 		logger.debug("Setting input string for decoding");
 
@@ -145,7 +193,11 @@ public class Hill{
 			throw new InvalidInputException("Length of input string must be a multiple of the number of rows in the key");
 		}
 	}
-	//Get a perfectly clean copy of input string
+	/**
+	 * Returns a clean version of the input string with only uppercase letters.
+	 *
+	 * @return the cleaned input string
+	 */
 	protected String getCleanInputString(){
 		logger.debug("Cleaning inputString");
 
@@ -154,7 +206,12 @@ public class Hill{
 
 		return cleanInputString;
 	}
-	//Validate and set character to add
+	/**
+	 * Sets the character used for padding the input string.
+	 *
+	 * @param characterToAdd the character to be used for padding
+	 * @throws InvalidCharacterException if the character is not a letter
+	 */
 	protected void setCharacterToAdd(char characterToAdd) throws InvalidCharacterException{
 		logger.debug("Setting character to add {}", characterToAdd);
 
@@ -173,7 +230,11 @@ public class Hill{
 		logger.debug("Cleaned character {}", characterToAdd);
 		this.characterToAdd = characterToAdd;
 	}
-	//Add capitalization, whitespace, and symbols to the output based on the input
+	/**
+	 * Restores capitalization, whitespace, and symbols to the output string based on the original input string.
+	 *
+	 * @return the polished output string
+	 */
 	protected String polishOutputString(){
 		logger.debug("Polishing output string");
 
@@ -203,7 +264,11 @@ public class Hill{
 		logger.debug("Polished string '{}'", cleanString);
 		return cleanString;
 	}
-	//Get vectors representing the input string
+	/**
+	 * Converts the cleaned input string into a list of column vectors based on the key matrix size.
+	 *
+	 * @return a list of vectors representing the input string
+	 */
 	protected ArrayList<ModMatrix> getInputVectors(){
 		logger.debug("Generating input vectors");
 
@@ -237,7 +302,12 @@ public class Hill{
 		//Return the array of vectors
 		return vectors;
 	}
-	//Get the string represented by the vectors that were passed in
+	/**
+	 * Converts a list of vectors back into a string representation.
+	 *
+	 * @param outputVectors the list of vectors to be converted
+	 * @return the resulting string
+	 */
 	protected String getOutputFromVectors(ArrayList<ModMatrix> outputVectors){
 		logger.debug("Turning vectors into a string");
 
@@ -257,7 +327,9 @@ public class Hill{
 		logger.debug("Converted string '{}'", convertedString);
 		return convertedString;
 	}
-	//Encode inputString and store the value in outputString
+	/**
+	 * Encodes the input string using the provided key matrix and stores the result in outputString.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -281,7 +353,9 @@ public class Hill{
 		//Add the extra characters back to the output and remove the added characters
 		outputString = polishOutputString();
 	}
-	//Decode inputString and store the value in outputString
+	/**
+	 * Decodes the input string using the provided key matrix and stores the result in outputString.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -308,7 +382,12 @@ public class Hill{
 		outputString = polishOutputString();
 	}
 
-	//Constructors
+	//?Constructors
+	/**
+	 * Default constructor initializing the cipher with default settings.
+	 *
+	 * @throws InvalidCharacterException if the default padding character is invalid
+	 */
 	public Hill() throws InvalidCharacterException{
 		preserveCapitals = false;
 		preserveWhitespace = false;
@@ -316,6 +395,14 @@ public class Hill{
 		setCharacterToAdd('x');
 		reset();
 	}
+	/**
+	 * Constructor initializing the cipher with specified settings.
+	 *
+	 * @param preserveCapitals if true, preserves capitals in the output string
+	 * @param preserveWhitespace if true, preserves whitespace in the output string
+	 * @param preserveSymbols if true, preserves symbols in the output string
+	 * @throws InvalidCharacterException if the default padding character is invalid
+	 */
 	public Hill(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -323,6 +410,15 @@ public class Hill{
 		setCharacterToAdd('x');
 		reset();
 	}
+	/**
+	 * Constructor initializing the cipher with specified settings and padding character.
+	 *
+	 * @param preserveCapitals if true, preserves capitals in the output string
+	 * @param preserveWhitespace if true, preserves whitespace in the output string
+	 * @param preserveSymbols if true, preserves symbols in the output string
+	 * @param characterToAdd the character to use for padding
+	 * @throws InvalidCharacterException if the padding character is invalid
+	 */
 	public Hill(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols, char characterToAdd) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -331,20 +427,54 @@ public class Hill{
 		reset();
 	}
 
-	//Encode inputString using the provided key
+	/**
+	 * Encodes the input string using the provided key matrix and returns the encoded string.
+	 *
+	 * @param key the matrix to use for encoding
+	 * @param inputString the message to encode
+	 * @return the encoded message
+	 * @throws InvalidKeyException if the key is invalid
+	 * @throws InvalidInputException if the input is invalid
+	 */
 	public String encode(int[][] key, String inputString) throws InvalidKeyException, InvalidInputException{
 		return encode(new ModMatrix(key, 26), inputString);
 	}
+	/**
+	 * Encodes the input string using the provided key matrix and returns the encoded string.
+	 *
+	 * @param key the matrix to use for encoding
+	 * @param inputString the message to encode
+	 * @return the encoded message
+	 * @throws InvalidKeyException if the key is invalid
+	 * @throws InvalidInputException if the input is invalid
+	 */
 	public String encode(ModMatrix key, String inputString) throws InvalidKeyException, InvalidInputException{
 		setKey(key);
 		setInputStringEncode(inputString);
 		encode();
 		return outputString;
 	}
-	//Decode inputString using the provided key
+	/**
+	 * Decodes the input string using the provided key matrix and returns the decoded string.
+	 *
+	 * @param key the matrix to use for decoding
+	 * @param inputString the message to decode
+	 * @return the decoded message
+	 * @throws InvalidKeyException if the key is invalid
+	 * @throws InvalidInputException if the input is invalid
+	 */
 	public String decode(int[][] key, String inputString) throws InvalidKeyException, InvalidInputException{
 		return decode(new ModMatrix(key, 26), inputString);
 	}
+	/**
+	 * Decodes the input string using the provided key matrix and returns the decoded string.
+	 *
+	 * @param key the matrix to use for decoding
+	 * @param inputString the message to decode
+	 * @return the decoded message
+	 * @throws InvalidKeyException if the key is invalid
+	 * @throws InvalidInputException if the input is invalid
+	 */
 	public String decode(ModMatrix key, String inputString) throws InvalidKeyException, InvalidInputException{
 		setKey(key);
 		setInputStringDecode(inputString);
@@ -352,7 +482,9 @@ public class Hill{
 		return outputString;
 	}
 
-	//Makes sure all variables are empty
+	/**
+	 * Resets the Hill cipher by clearing all variables and setting the key to an empty matrix.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 
@@ -361,13 +493,28 @@ public class Hill{
 		key = new ModMatrix(26);
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Returns the input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Returns the key matrix used for encoding or decoding.
+	 *
+	 * @return the key matrix
+	 */
 	public ModMatrix getKey(){
 		return key;
 	}

src/main/java/com/mattrixwv/cipherstream/polysubstitution/LargePolybiusSquare.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/polysubstitution/LargePolybiusSquare.java
 //Mattrixwv
 // Created: 04-21-23
-// Modified: 05-04-23
+// Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -15,11 +31,18 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * Represents the Polybius square cipher encryption and decryption.
+ * The Polybius square cipher is a classical encryption method that uses a 6x6 grid
+ * to encode and decode messages based on the positions of letters and numbers in the grid.
+ */
 public class LargePolybiusSquare extends PolybiusSquare{
 	private static final Logger logger = LoggerFactory.getLogger(LargePolybiusSquare.class);
 
 
-	//Create the grid from the keyword
+	/**
+	 * Creates the grid from the keyword.
+	 */
 	@Override
 	protected void createGrid(){
 		logger.debug("Creating grid");
@@ -31,7 +54,13 @@ public class LargePolybiusSquare extends PolybiusSquare{
 			}
 		}
 	}
-	//Strips invalid characters from the string that needs encoded/decoded
+	/**
+	 * Strips invalid characters from the string that needs encoding/decoding.
+	 *
+	 * @param inputString the input string to be cleaned
+	 * @throws InvalidCharacterException if an invalid character is found
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	@Override
 	protected void setInputStringEncode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		if(inputString == null){
@@ -75,7 +104,11 @@ public class LargePolybiusSquare extends PolybiusSquare{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Returns the input string ready for encoding
+	/**
+	 * Returns the input string ready for encoding.
+	 *
+	 * @return the prepared input string
+	 */
 	@Override
 	protected String getPreparedInputStringEncode(){
 		logger.debug("Preparing input string for encoding");
@@ -87,7 +120,11 @@ public class LargePolybiusSquare extends PolybiusSquare{
 
 		return cleanString;
 	}
-	//Strips invalid characters from the keyword and creates the grid
+	/**
+	 * Strips invalid characters from the keyword and creates the grid.
+	 *
+	 * @param keyword the keyword to be processed
+	 */
 	@Override
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		if(keyword == null){
@@ -116,7 +153,11 @@ public class LargePolybiusSquare extends PolybiusSquare{
 		//Create the grid from the sanitized keyword
 		createGrid();
 	}
-	//Adds characters that aren't letters to the output
+	/**
+	 * Adds characters that aren't letters to the output during encoding.
+	 *
+	 * @param cleanString the cleaned string to be formatted
+	 */
 	@Override
 	protected void addCharactersToCleanStringEncode(String cleanString){
 		logger.debug("Formatting output string");
@@ -144,6 +185,11 @@ public class LargePolybiusSquare extends PolybiusSquare{
 		outputString = fullOutput.toString();
 		logger.debug("Saving output string {}", outputString);
 	}
+	/**
+	 * Adds characters that aren't letters to the output during decoding.
+	 *
+	 * @param cleanString the cleaned string to be formatted
+	 */
 	@Override
 	protected void addCharactersToCleanStringDecode(String cleanString){
 		logger.debug("Formatting output string");
@@ -172,7 +218,9 @@ public class LargePolybiusSquare extends PolybiusSquare{
 		logger.debug("Saving output string {}", outputString);
 	}
 
-	//Makes sure all variables are empty
+	/**
+	 * Resets all variables to their default values.
+	 */
 	@Override
 	public void reset(){
 		logger.debug("Resetting");
@@ -183,10 +231,22 @@ public class LargePolybiusSquare extends PolybiusSquare{
 		keyword = "";
 	}
 
-	//Constructors
+	//?Constructors
+	/**
+	 * Constructs a PolybiusSquare cipher instance with default settings.
+	 *
+	 * @throws InvalidCharacterException if default characters are invalid
+	 */
 	public LargePolybiusSquare() throws InvalidCharacterException{
 		super();
 	}
+	/**
+	 * Constructs a PolybiusSquare cipher instance with specified settings.
+	 *
+	 * @param preserveWhitespace whether to preserve whitespace
+	 * @param preserveSymbols whether to preserve symbols
+	 * @throws InvalidCharacterException if default characters are invalid
+	 */
 	public LargePolybiusSquare(boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
 		super(preserveWhitespace, preserveSymbols);
 	}

src/main/java/com/mattrixwv/cipherstream/polysubstitution/Morse.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/CipherStreamJava/Morse.java
 //Mattrixwv
 // Created: 07-28-21
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -15,17 +31,28 @@ import org.slf4j.LoggerFactory;
 import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 
 
+/**
+ * A class to handle encoding and decoding of Morse code.
+ * <p>
+ * This class provides methods to encode a string into Morse code and decode Morse code back into a string.
+ * It supports alphanumeric characters (A-Z, 0-9) and validates input to ensure it contains valid characters.
+ * </p>
+ */
 public class Morse{
 	private static final Logger logger = LoggerFactory.getLogger(Morse.class);
-	//Code representations
+	//?Code representations
+	/** Morse code representations for letters A-Z */
 	private static final String[] letters = {
 		".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..",	//A-L
 		"--", "-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--.."	//M-Z
 	};
+	/** Morse code representations for digits 0-9 */
 	private static final String[] numbers = {
 		"-----", ".----", "..---", "...--", "....-", ".....", "-....", "--...", "---..", "----."	//0-9
 	};
-	private static final Map<String, Character> map;	//The map to help convert from Morse to letters and numbers
+	/** The map to help convert from Morse to letters and numbers */
+	private static final Map<String, Character> map;
+	/** Initialize the Morse Code map */
 	static{
 		//Setup the map
 		map = new HashMap<>();
@@ -38,12 +65,22 @@ public class Morse{
 			map.put(number, (char)('0' + cnt));
 		}
 	}
-	//Fields
-	protected String inputString;	//The string that needs encoded/decoded
-	protected String outputString;	//The encoded/decoded message
+	//?Fields
+	/** The string that needs encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded message */
+	protected String outputString;
 
 
-	//Validate and set the input string for encoding
+	/**
+	 * Validates and prepares the input string for encoding.
+	 * <p>
+	 * This method converts the input string to uppercase, removes all non-alphanumeric characters, and stores the cleaned string.
+	 * </p>
+	 *
+	 * @param inputString the string to be encoded
+	 * @throws InvalidInputException if the input string is null or contains invalid characters
+	 */
 	protected void setInputStringEncode(String inputString){
 		logger.debug("Setting input string for encoding '{}'", inputString);
 
@@ -70,7 +107,15 @@ public class Morse{
 		//Save the input
 		this.inputString = inputString;
 	}
-	//Validate and set the input string for decoding
+	/**
+	 * Validates and prepares the input string for decoding.
+	 * <p>
+	 * This method ensures that the input string contains only valid Morse code characters (dots, dashes, and spaces).
+	 * </p>
+	 *
+	 * @param inputString the Morse code string to be decoded
+	 * @throws InvalidInputException if the input string is null or contains invalid Morse code characters
+	 */
 	protected void setInputStringDecode(String inputString){
 		logger.debug("Setting input string for decoding '{}'", inputString);
 
@@ -94,7 +139,14 @@ public class Morse{
 		logger.debug("Saving");
 		this.inputString = inputString;
 	}
-	//Encodes the inputString and stores the result in outputString
+	/**
+	 * Encodes the {@code inputString} into Morse code.
+	 * <p>
+	 * This method converts each alphanumeric character in the input string to its Morse code representation and stores the result.
+	 * </p>
+	 *
+	 * @throws InvalidInputException if the input string contains characters that cannot be encoded
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -123,7 +175,14 @@ public class Morse{
 		this.outputString = output.toString();
 		logger.debug("Saving encoded string '{}'", outputString);
 	}
-	//Decodes the inputString and stores the result in outputString
+	/**
+	 * Decodes the {@code inputString} from Morse code to plain text.
+	 * <p>
+	 * This method converts each Morse code sequence in the input string back to its corresponding alphanumeric character.
+	 * </p>
+	 *
+	 * @throws InvalidInputException if the input string contains invalid Morse code sequences
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -149,19 +208,40 @@ public class Morse{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Resets the class by clearing the input and output strings.
+	 */
 	public Morse(){
 		reset();
 	}
 
 
-	//Sets the inputString and encodes the message
+	/**
+	 * Encodes the given input string into Morse code.
+	 * <p>
+	 * This method validates the input string, encodes it, and returns the Morse code representation.
+	 * </p>
+	 *
+	 * @param inputString the string to be encoded
+	 * @return the Morse code representation of the input string
+	 * @throws InvalidInputException if the input string contains invalid characters
+	 */
 	public String encode(String inputString){
 		setInputStringEncode(inputString);
 		encode();
 		return outputString;
 	}
-	//Sets the inputString and decodes the message
+	/**
+	 * Decodes the given Morse code string into plain text.
+	 * <p>
+	 * This method validates the Morse code input, decodes it, and returns the plain text representation.
+	 * </p>
+	 *
+	 * @param inputString the Morse code string to be decoded
+	 * @return the decoded plain text representation
+	 * @throws InvalidInputException if the input string contains invalid Morse code sequences
+	 */
 	public String decode(String inputString){
 		setInputStringDecode(inputString);
 		decode();
@@ -169,14 +249,26 @@ public class Morse{
 	}
 
 
-	//Getters
+	//?Getters
+	/**
+	 * Returns the current input string.
+	 *
+	 * @return the current input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the current output string.
+	 *
+	 * @return the current output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
-	//Makes sure all variables are empty
+	/**
+	 * Resets the internal fields to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting");
 

src/main/java/com/mattrixwv/cipherstream/polysubstitution/Playfair.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/polysubstitution/Playfair.java
 //Matthew Ellison
 // Created: 07-30-21
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -15,40 +31,77 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * Represents the Playfair cipher encryption and decryption.
+ * The Playfair cipher is a digraph substitution cipher that encrypts pairs of letters.
+ */
 public class Playfair{
 	private static final Logger logger = LoggerFactory.getLogger(Playfair.class);
 
-	//A class representing the location of a character in the grid
+	/** A class representing the location of a character in the grid */
 	protected class CharLocation{
+		/** The x location in the grid */
 		protected int x;
+		/** The y location in the grid */
 		protected int y;
+		/**
+		 * Constructs a CharLocation with the specified x and y coordinates.
+		 *
+		 * @param x the x-coordinate of the character's location
+		 * @param y the y-coordinate of the character's location
+		 */
 		public CharLocation(int x, int y){
 			this.x = x;
 			this.y = y;
 		}
+		/**
+		 * Returns the x-coordinate of the character's location.
+		 *
+		 * @return the x-coordinate
+		 */
 		public int getX(){
 			return x;
 		}
+		/**
+		 * Returns the y-coordinate of the character's location.
+		 *
+		 * @return the y-coordinate
+		 */
 		public int getY(){
 			return y;
 		}
 	}
 
-	//Fields
-	protected String inputString;	//The message that needs to be encoded/decoded
-	protected String outputString;	//The encoded/decoded message
-	protected String keyword;	//The keyword used to create the grid
-	protected char[][] grid;	//The grid used to encode/decode the message
-	protected char replaced;	//The letter that will need to be replaced in the grid and any input string or keyword
-	protected char replacer;	//The letter that replaced replaced in the input string or keyword
-	protected char doubled;		//The letter that will be placed between double letters in the input string if necessary or to make the string length even
-	//Settings
-	protected boolean preserveCapitals;		//Persist captials in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	//?Fields
+	/** The message that needs to be encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded message */
+	protected String outputString;
+	/** The keyword used to create the grid */
+	protected String keyword;
+	/** The grid used to encode/decode the message */
+	protected char[][] grid;
+	/** The letter that will need to be replaced in the grid and any input string or keyword */
+	protected char replaced;
+	/** The letter that replaced replaced in the input string or keyword */
+	protected char replacer;
+	/** The letter that will be placed between double letters in the input string if necessary or to make the string length even */
+	protected char doubled;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Set the doubled character
+	/**
+	 * Sets the doubled character.
+	 *
+	 * @param doubled the character to be used as the doubled character
+	 * @throws InvalidCharacterException if the character is not a letter or is invalid
+	 */
 	protected void setDoubled(char doubled) throws InvalidCharacterException{
 		logger.debug("Setting doubled");
 		logger.debug("Original character {}", doubled);
@@ -80,7 +133,12 @@ public class Playfair{
 		logger.debug("Setting doubled to {}", doubled);
 		this.doubled = doubled;
 	}
-	//Set the replacer character
+	/**
+	 * Sets the replacer character.
+	 *
+	 * @param replacer the character to replace the replaced character
+	 * @throws InvalidCharacterException if the character is not a letter or is invalid
+	 */
 	protected void setReplacer(char replacer) throws InvalidCharacterException{
 		logger.debug("Setting replacer");
 		logger.debug("Original character {}", replacer);
@@ -112,7 +170,12 @@ public class Playfair{
 		logger.debug("Setting replacer to {}", replacer);
 		this.replacer = replacer;
 	}
-	//Set the replaced character
+	/**
+	 * Sets the replaced character.
+	 *
+	 * @param replaced the character to be replaced
+	 * @throws InvalidCharacterException if the character is not a letter or is invalid
+	 */
 	protected void setReplaced(char replaced) throws InvalidCharacterException{
 		logger.debug("Setting replaced");
 		logger.debug("Original character {}", replaced);
@@ -144,7 +207,9 @@ public class Playfair{
 		logger.debug("Setting replaced to {}", replaced);
 		this.replaced = replaced;
 	}
-	//Create the grid from the keyword
+	/**
+	 * Creates the grid from the keyword.
+	 */
 	protected void createGrid(){
 		logger.debug("Creating grid from keyword");
 
@@ -158,7 +223,14 @@ public class Playfair{
 
 		logger.debug("Grid\n{}", getGrid());
 	}
-	//Strips invalid characters from the string that needs encoded/decoded
+	/**
+	 * Strips invalid characters from the string that needs encoding/decoding.
+	 *
+	 * @param inputString the input string to be cleaned
+	 * @param encoding true if encoding, false if decoding
+	 * @throws InvalidCharacterException if an invalid character is found
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	protected void setInputString(String inputString, boolean encoding) throws InvalidCharacterException, InvalidInputException{
 		logger.debug("Setting input string");
 
@@ -214,6 +286,11 @@ public class Playfair{
 			throw new InvalidInputException("Input must have at least 1 letter");
 		}
 	}
+	/**
+	 * Cleans up the input string for encoding.
+	 *
+	 * @param inputString the input string to be cleaned
+	 */
 	protected void setInputStringEncode(String inputString){
 		logger.debug("Cleaning up input string for encoding");
 
@@ -286,7 +363,11 @@ public class Playfair{
 		this.inputString = cleanInput.toString();
 		logger.debug("Cleaned input string '{}'", this.inputString);
 	}
-	//Returns the input string ready for encoding
+	/**
+	 * Returns the input string ready for encoding.
+	 *
+	 * @return the prepared input string
+	 */
 	protected String getPreparedInputString(){
 		logger.debug("Getting input string ready for encoding");
 
@@ -297,7 +378,12 @@ public class Playfair{
 
 		return cleanString;
 	}
-	//Strips invalid characters from the keyword and creates the grid
+	/**
+	 * Strips invalid characters from the keyword and creates the grid.
+	 *
+	 * @param keyword the keyword to be processed
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 */
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		logger.debug("Setting keyword");
 
@@ -333,7 +419,13 @@ public class Playfair{
 		//Create the grid from the sanitized keyword
 		createGrid();
 	}
-	//Returns the location of the given character in the grid
+	/**
+	 * Returns the location of the given character in the grid.
+	 *
+	 * @param letter the character whose location is to be found
+	 * @return the location of the character in the grid
+	 * @throws InvalidInputException if the character is not found in the grid
+	 */
 	protected CharLocation findChar(char letter) throws InvalidInputException{
 		logger.debug("Finding character in grid {}", letter);
 
@@ -350,7 +442,13 @@ public class Playfair{
 		//If it was not found something went wrong
 		throw new InvalidInputException("The character '" + letter + "' was not found in the grid");
 	}
-	//Returns the location in the grid of x and y, adjusting for out of bounds
+	/**
+	 * Returns the character in the grid at the specified coordinates.
+	 *
+	 * @param x the x-coordinate
+	 * @param y the y-coordinate
+	 * @return the character at the specified coordinates
+	 */
 	protected char getGridChar(int x, int y){
 		logger.debug("Getting character from grid[{}][{}]", x, y);
 
@@ -365,7 +463,11 @@ public class Playfair{
 		logger.debug("Character {}", letter);
 		return letter;
 	}
-	//Adds characters that aren't letters to the output
+	/**
+	 * Adds characters that aren't letters to the output.
+	 *
+	 * @param cleanString the cleaned string to be formatted
+	 */
 	protected void addCharactersToCleanString(String cleanString){
 		logger.debug("Formatting output string");
 
@@ -394,7 +496,11 @@ public class Playfair{
 		outputString = fullOutput.toString();
 		logger.debug("Formatted output '{}'", outputString);
 	}
-	//Encodes inputString using the Playfair cipher and stores the result in outputString
+	/**
+	 * Encodes the input string using the Playfair cipher and stores the result in the output string.
+	 *
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	protected void encode() throws InvalidInputException{
 		logger.debug("Encoding");
 
@@ -438,7 +544,11 @@ public class Playfair{
 		//Add other characters to the output string
 		addCharactersToCleanString(output.toString());
 	}
-	//Decodes inputString using the Playfair cipher and stores the result in outputString
+	/**
+	 * Decodes the input string using the Playfair cipher and stores the result in the output string.
+	 *
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	protected void decode() throws InvalidInputException{
 		logger.debug("Decoding");
 
@@ -483,7 +593,12 @@ public class Playfair{
 		addCharactersToCleanString(output.toString());
 	}
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a Playfair cipher instance with default settings.
+	 *
+	 * @throws InvalidCharacterException if default characters are invalid
+	 */
 	public Playfair() throws InvalidCharacterException{
 		reset();
 		preserveCapitals = false;
@@ -493,6 +608,14 @@ public class Playfair{
 		setReplacer('i');
 		setDoubled('x');
 	}
+	/**
+	 * Constructs a Playfair cipher instance with specified settings.
+	 *
+	 * @param preserveCapitals whether to preserve capital letters
+	 * @param preserveWhitespace whether to preserve whitespace
+	 * @param preserveSymbols whether to preserve symbols
+	 * @throws InvalidCharacterException if default characters are invalid
+	 */
 	public Playfair(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
 		reset();
 		this.preserveCapitals = preserveCapitals;
@@ -502,6 +625,17 @@ public class Playfair{
 		setReplacer('i');
 		setDoubled('x');
 	}
+	/**
+	 * Constructs a Playfair cipher instance with specified settings and characters.
+	 *
+	 * @param preserveCapitals whether to preserve capital letters
+	 * @param preserveWhitespace whether to preserve whitespace
+	 * @param preserveSymbols whether to preserve symbols
+	 * @param replaced the character to be replaced
+	 * @param replacer the character to replace the replaced character
+	 * @param doubled the character to use for doubled letters
+	 * @throws InvalidCharacterException if any character is invalid
+	 */
 	public Playfair(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols, char replaced, char replacer, char doubled) throws InvalidCharacterException{
 		reset();
 		this.preserveCapitals = preserveCapitals;
@@ -512,7 +646,15 @@ public class Playfair{
 		setDoubled(doubled);
 	}
 
-	//Sets the keyword and inputString and encodes the message
+	/**
+	 * Sets the keyword and input string and encodes the message.
+	 *
+	 * @param keyword the keyword for the cipher
+	 * @param input the message to encode
+	 * @return the encoded message
+	 * @throws InvalidCharacterException if any character is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(String keyword, String input) throws InvalidCharacterException, InvalidInputException{
 		reset();
 		setKeyword(keyword);
@@ -520,7 +662,15 @@ public class Playfair{
 		encode();
 		return outputString;
 	}
-	//Sets the keyword and inputString and decodes the message
+	/**
+	 * Sets the keyword and input string and decodes the message.
+	 *
+	 * @param keyword the keyword for the cipher
+	 * @param input the encoded message to decode
+	 * @return the decoded message
+	 * @throws InvalidCharacterException if any character is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String decode(String keyword, String input) throws InvalidCharacterException, InvalidInputException{
 		reset();
 		setKeyword(keyword);
@@ -529,7 +679,9 @@ public class Playfair{
 		return outputString;
 	}
 
-	//Makes sure all variables are empty
+	/**
+	 * Resets all variables to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 
@@ -538,25 +690,60 @@ public class Playfair{
 		outputString = "";
 		keyword = "";
 	}
-	//Getters
+	//?Getters
+	/**
+	 * Returns the replaced character.
+	 *
+	 * @return the replaced character
+	 */
 	public char getReplaced(){
 		return replaced;
 	}
+	/**
+	 * Returns the replacer character.
+	 *
+	 * @return the replacer character
+	 */
 	public char getReplacer(){
 		return replacer;
 	}
+	/**
+	 * Returns the doubled character.
+	 *
+	 * @return the doubled character
+	 */
 	public char getDoubled(){
 		return doubled;
 	}
+	/**
+	 * Returns the keyword used in the cipher.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
+	/**
+	 * Returns the input string that was set for encoding/decoding.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the output string after encoding/decoding.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Return the grid used for encoding/decoding.
+	 *
+	 * @return the grid as a string
+	 */
 	public String getGrid(){
 		logger.debug("Creating string from grid");
 

src/main/java/com/mattrixwv/cipherstream/polysubstitution/PolybiusSquare.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/polysubstitution/PolybiusSquare.java
 //Mattrixwv
 // Created: 01-04-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -15,38 +31,74 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * Represents the Polybius square cipher encryption and decryption.
+ * The Polybius square cipher is a classical encryption method that uses a 5x5 grid
+ * to encode and decode messages based on the positions of letters in the grid.
+ */
 public class PolybiusSquare{
 	private static final Logger logger = LoggerFactory.getLogger(PolybiusSquare.class);
 
-	//A class representing the location of a character in the grid
+	/** A class representing the location of a character in the grid */
 	protected class CharLocation{
+		/** The x location in the grid */
 		private int x;
+		/** The y location in the grid */
 		private int y;
+		/**
+		 * Constructs a CharLocation with the specified x and y coordinates.
+		 *
+		 * @param x the x-coordinate of the character's location
+		 * @param y the y-coordinate of the character's location
+		 */
 		public CharLocation(int x, int y){
 			this.x = x;
 			this.y = y;
 		}
+		/**
+		 * Returns the x-coordinate of the character's location.
+		 *
+		 * @return the x-coordinate
+		 */
 		public int getX(){
 			return x;
 		}
+		/**
+		 * Returns the y-coordinate of the character's location.
+		 *
+		 * @return the y-coordinate
+		 */
 		public int getY(){
 			return y;
 		}
 	}
 
-	//Fields
-	protected String inputString;	//The message that needs to be encoded/decoded
-	protected String outputString;	//The encoded/decoded message
-	protected String keyword;	//The keyword used to create the grid
-	protected char[][] grid;	//The grid used to encode/decode the message
-	protected char replaced;	//The letter that will need to be replaced in the grid and any input string or keyword
-	protected char replacer;	//The letter that replaces replaced in the input string or keyword
-	//Settings
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	//?Fields
+	/** The message that needs to be encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded message */
+	protected String outputString;
+	/** The keyword used to create the grid */
+	protected String keyword;
+	/** The grid used to encode/decode the message */
+	protected char[][] grid;
+	/** The letter that will need to be replaced in the grid and any input string or keyword */
+	protected char replaced;
+	/** The letter that replaces replaced in the input string or keyword */
+	protected char replacer;
+	//?Settings
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Setting the character to be replaced
+	/**
+	 * Sets the replaced character.
+	 *
+	 * @param replaced the character to be replaced
+	 * @throws InvalidCharacterException if the character is not a letter or is invalid
+	 */
 	protected void setReplaced(char replaced) throws InvalidCharacterException{
 		logger.debug("Setting replaced");
 		logger.debug("Original character {}", replaced);
@@ -63,7 +115,12 @@ public class PolybiusSquare{
 		this.replaced = Character.toUpperCase(replaced);
 		logger.debug("Cleaned character {}", this.replaced);
 	}
-	//Setting the character that replaces replaced
+	/**
+	 * Sets the replacer character.
+	 *
+	 * @param replacer the character the replaces replaced
+	 * @throws InvalidCharacterException if the character is not a letter or is invalid
+	 */
 	protected void setReplacer(char replacer) throws InvalidCharacterException{
 		logger.debug("Setting replacer");
 		logger.debug("Original character {}", replacer);
@@ -80,7 +137,9 @@ public class PolybiusSquare{
 		this.replacer = Character.toUpperCase(replacer);
 		logger.debug("Cleaned character {}", this.replacer);
 	}
-	//Create the grid from the keyword
+	/**
+	 * Creates the grid from the keyword.
+	 */
 	protected void createGrid(){
 		logger.debug("Creating grid from keyword");
 
@@ -93,7 +152,13 @@ public class PolybiusSquare{
 
 		logger.debug("Created grid\n{}", getGrid());
 	}
-	//Strips invalid characters from the string that needs encoded/decoded
+	/**
+	 * Strips invalid characters from the string that needs encoding/decoding.
+	 *
+	 * @param inputString the input string to be cleaned
+	 * @throws InvalidCharacterException if an invalid character is found
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	protected void setInputStringEncode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -148,6 +213,13 @@ public class PolybiusSquare{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
+	/**
+	 * Strips invalid characters from the string that needs decoding.
+	 *
+	 * @param inputString the input string to be cleaned
+	 * @throws InvalidCharacterException if an invalid character is found
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	protected void setInputStringDecode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		if(inputString == null){
 			throw new InvalidInputException("Input cannot be null");
@@ -193,7 +265,11 @@ public class PolybiusSquare{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Returns the input string ready for encoding
+	/**
+	 * Returns the input string ready for encoding.
+	 *
+	 * @return the prepared input string
+	 */
 	protected String getPreparedInputStringEncode(){
 		logger.debug("Preparing input string for encoding");
 
@@ -203,6 +279,11 @@ public class PolybiusSquare{
 		logger.debug("Prepared string '{}'", cleanString);
 		return cleanString;
 	}
+	/**
+	 * Returns the input string ready for decoding.
+	 *
+	 * @return the prepared input string
+	 */
 	protected String getPreparedInputStringDecode(){
 		logger.debug("Preparing input string for decoding");
 
@@ -211,7 +292,11 @@ public class PolybiusSquare{
 		logger.debug("Prepared string '{}'", cleanString);
 		return cleanString;
 	}
-	//Strips invalid characters from the keyword and creates the grid
+	/**
+	 * Strips invalid characters from the keyword and creates the grid.
+	 *
+	 * @param keyword the keyword to be processed
+	 */
 	protected void setKeyword(String keyword){
 		if(keyword == null){
 			throw new InvalidKeywordException("Keyword cannot be null");
@@ -244,7 +329,13 @@ public class PolybiusSquare{
 		//Create the grid from the sanitized keyword
 		createGrid();
 	}
-	//Returns the location of the given charcter in the grid
+	/**
+	 * Returns the location of the given character in the grid.
+	 *
+	 * @param letter the character whose location is to be found
+	 * @return the location of the character in the grid
+	 * @throws InvalidInputException if the character is not found in the grid
+	 */
 	protected CharLocation findChar(char letter) throws InvalidInputException{
 		logger.debug("Finding {} in grid", letter);
 
@@ -260,7 +351,11 @@ public class PolybiusSquare{
 		//If it was not found something went wrong
 		throw new InvalidInputException("The character '" + letter + "' was not found in the grid");
 	}
-	//Adds characters that aren't letters to the output
+	/**
+	 * Adds characters that aren't letters to the output during encoding.
+	 *
+	 * @param cleanString the cleaned string to be formatted
+	 */
 	protected void addCharactersToCleanStringEncode(String cleanString){
 		logger.debug("Formatting output string for encoding");
 
@@ -287,6 +382,11 @@ public class PolybiusSquare{
 		outputString = fullOutput.toString();
 		logger.debug("Formatted output '{}'", outputString);
 	}
+	/**
+	 * Adds characters that aren't letters to the output during decoding.
+	 *
+	 * @param cleanString the cleaned string to be formatted
+	 */
 	protected void addCharactersToCleanStringDecode(String cleanString){
 		logger.debug("Formatting output string for decoding");
 
@@ -313,7 +413,11 @@ public class PolybiusSquare{
 		outputString = fullOutput.toString();
 		logger.debug("Formatted output '{}'", outputString);
 	}
-	//Encodes inputString using the Playfair cipher and stores the result in outputString
+	/**
+	 * Encodes the input string using the Polybius cipher and stores the result in the output string.
+	 *
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	protected void encode() throws InvalidInputException{
 		logger.debug("Encoding");
 
@@ -337,7 +441,11 @@ public class PolybiusSquare{
 		//Add other characters to the output string
 		addCharactersToCleanStringEncode(output.toString());
 	}
-	//Decodes inputString using the Playfair cipher and stores the result in outputString
+	/**
+	 * Decodes the input string using the Polybius cipher and stores the result in the output string.
+	 *
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -363,7 +471,12 @@ public class PolybiusSquare{
 		addCharactersToCleanStringDecode(output.toString());
 	}
 
-	//Constructors
+	//?Constructors
+	/**
+	 * Constructs a PolybiusSquare cipher instance with default settings.
+	 *
+	 * @throws InvalidCharacterException if default characters are invalid
+	 */
 	public PolybiusSquare() throws InvalidCharacterException{
 		reset();
 		setReplaced('J');
@@ -371,6 +484,13 @@ public class PolybiusSquare{
 		preserveWhitespace = false;
 		preserveSymbols = false;
 	}
+	/**
+	 * Constructs a PolybiusSquare cipher instance with specified settings.
+	 *
+	 * @param preserveWhitespace whether to preserve whitespace
+	 * @param preserveSymbols whether to preserve symbols
+	 * @throws InvalidCharacterException if default characters are invalid
+	 */
 	public PolybiusSquare(boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
 		reset();
 		setReplaced('J');
@@ -378,6 +498,15 @@ public class PolybiusSquare{
 		this.preserveWhitespace = preserveWhitespace;
 		this.preserveSymbols = preserveSymbols;
 	}
+	/**
+	 * Constructs a PolybiusSquare cipher instance with specified settings and characters.
+	 *
+	 * @param preserveWhitespace whether to preserve whitespace
+	 * @param preserveSymbols whether to preserve symbols
+	 * @param replaced the character to be replaced
+	 * @param replacer the character to replace the replaced character
+	 * @throws InvalidCharacterException if any character is invalid
+	 */
 	public PolybiusSquare(boolean preserveWhitespace, boolean preserveSymbols, char replaced, char replacer) throws InvalidCharacterException{
 		reset();
 		setReplaced(replaced);
@@ -386,10 +515,26 @@ public class PolybiusSquare{
 		this.preserveSymbols = preserveSymbols;
 	}
 
-	//Sets the keyword and inputString and encodes the message
+	/**
+	 * Sets the keyword and input string and encodes the message.
+	 *
+	 * @param inputString the message to encode
+	 * @return the encoded message
+	 * @throws InvalidCharacterException if any character is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		return encode("", inputString);
 	}
+	/**
+	 * Sets the keyword and input string and encodes the message.
+	 *
+	 * @param keyword the keyword for the cipher
+	 * @param inputString the message to encode
+	 * @return the encoded message
+	 * @throws InvalidCharacterException if any character is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(String keyword, String inputString) throws InvalidCharacterException, InvalidInputException{
 		reset();
 		setKeyword(keyword);
@@ -397,10 +542,26 @@ public class PolybiusSquare{
 		encode();
 		return outputString;
 	}
-	//Sets the keyword and inputString and decodes the message
+	/**
+	 * Sets the keyword and input string and decodes the message.
+	 *
+	 * @param inputString the encoded message to decode
+	 * @return the decoded message
+	 * @throws InvalidCharacterException if any character is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String decode(String inputString) throws InvalidCharacterException, InvalidInputException{
 		return decode("", inputString);
 	}
+	/**
+	 * Sets the keyword and input string and decodes the message.
+	 *
+	 * @param keyword the keyword for the cipher
+	 * @param inputString the encoded message to decode
+	 * @return the decoded message
+	 * @throws InvalidCharacterException if any character is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String decode(String keyword, String inputString) throws InvalidCharacterException, InvalidInputException{
 		reset();
 		setKeyword(keyword);
@@ -409,7 +570,9 @@ public class PolybiusSquare{
 		return outputString;
 	}
 
-	//Makes sure all variables are empty
+	/**
+	 * Resets all variables to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 
@@ -419,22 +582,52 @@ public class PolybiusSquare{
 		keyword = "";
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Returns the replaced character.
+	 *
+	 * @return the replaced character
+	 */
 	public char getReplaced(){
 		return replaced;
 	}
+	/**
+	 * Returns the replacer character.
+	 *
+	 * @return the replacer character
+	 */
 	public char getReplacer(){
 		return replacer;
 	}
+	/**
+	 * Returns the keyword used in the cipher.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
+	/**
+	 * Returns the input string that was set for encoding/decoding.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the output string after encoding/decoding.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Returns a string representation of the grid.
+	 *
+	 * @return the grid as a string
+	 */
 	public String getGrid(){
 		logger.debug("Creating string from grid");
 

src/main/java/com/mattrixwv/cipherstream/polysubstitution/RailFence.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/polysubstitution/RailFence.java
 //Mattrixwv
 // Created: 03-21-22
-//Modified: 05-04-23
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -14,19 +30,35 @@ import com.mattrixwv.cipherstream.exceptions.InvalidBaseException;
 import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 
 
+/**
+ * Represents the Rail Fence cipher encryption and decryption.
+ * The Rail Fence cipher is a form of transposition cipher that writes the message in a zigzag pattern
+ * across multiple "rails" and then reads it off row by row to encode or decode the message.
+ */
 public class RailFence{
 	private static final Logger logger = LoggerFactory.getLogger(RailFence.class);
-	//Fields
-	protected String inputString;		//The message that needs to be encoded/decoded
-	protected String outputString;		//The encoded/decoded message
-	protected StringBuilder[] fence;	//The fence used for encoding/decoding
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	//?Fields
+	/** The message that needs to be encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded message */
+	protected String outputString;
+	/** The fence used for encoding/decoding */
+	protected StringBuilder[] fence;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
 
-	//Strips invalid characters from the string that needs encoded/decoded
+	/**
+	 * Strips invalid characters from the string that needs to be encoded/decoded.
+	 *
+	 * @param inputString the input string to be cleaned
+	 * @throws InvalidInputException if the input string is null or invalid
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		//Ensure the input string isn't null
 		if(inputString == null){
@@ -61,7 +93,12 @@ public class RailFence{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Ensures the number of rails is valid and sets up the fence
+	/**
+	 * Ensures the number of rails is valid and sets up the fence.
+	 *
+	 * @param numRails the number of rails to be used
+	 * @throws InvalidBaseException if the number of rails is less than 2
+	 */
 	protected void setNumRails(int numRails) throws InvalidBaseException{
 		if(numRails < 2){
 			throw new InvalidBaseException("You must use at least 2 rails");
@@ -74,13 +111,21 @@ public class RailFence{
 			fence[cnt] = new StringBuilder();
 		}
 	}
-	//Strip the inputString of all non-letter characters
+	/**
+	 * Strips the input string of all non-letter characters.
+	 *
+	 * @return the cleaned input string
+	 */
 	protected String getCleanInputString(){
 		logger.debug("Getting input string for encoding");
 
 		return inputString.replaceAll("[^a-zA-Z]", "");
 	}
-	//Ensures capitals, lowercase, and symbols are displayed in the output string
+	/**
+	 * Ensures capitals, lowercase, and symbols are displayed in the output string.
+	 *
+	 * @param outputString the encoded/decoded output string to be formatted
+	 */
 	protected void formatOutput(String outputString){
 		logger.debug("Formatting output string");
 
@@ -109,7 +154,11 @@ public class RailFence{
 		this.outputString = output.toString();
 		logger.debug("Formatted output '{}'", this.outputString);
 	}
-	//Returns the decoded string found in the fence after all characters are placed correctly
+	/**
+	 * Returns the decoded string found in the fence after all characters are placed correctly.
+	 *
+	 * @return the decoded string
+	 */
 	protected String getDecodedStringFromFence(){
 		logger.debug("Getting decoded string from the fence");
 
@@ -161,7 +210,9 @@ public class RailFence{
 		logger.debug("Fence output '{}'", output);
 		return output.toString();
 	}
-	//Encodes inputString using the RailFence cipher and stores the result in outputString
+	/**
+	 * Encodes the input string using the Rail Fence cipher and stores the result in the output string.
+	 */
 	protected void encode(){
 		logger.debug("Encoding");
 
@@ -204,7 +255,9 @@ public class RailFence{
 		//Format the output
 		formatOutput(output.toString());
 	}
-	//Decodes inputString using the RailFence cipher and stores the result in outputString
+	/**
+	 * Decodes the input string using the Rail Fence cipher and stores the result in the output string.
+	 */
 	protected void decode(){
 		logger.debug("Decoding");
 
@@ -256,13 +309,23 @@ public class RailFence{
 		formatOutput(output);
 	}
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a RailFence cipher instance with default settings.
+	 */
 	public RailFence(){
 		preserveCapitals = false;
 		preserveWhitespace = false;
 		preserveSymbols = false;
 		reset();
 	}
+	/**
+	 * Constructs a RailFence cipher instance with specified settings.
+	 *
+	 * @param preserveCapitals whether to preserve uppercase letters
+	 * @param preserveWhitespace whether to preserve whitespace
+	 * @param preserveSymbols whether to preserve symbols
+	 */
 	public RailFence(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols){
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -270,7 +333,15 @@ public class RailFence{
 		reset();
 	}
 
-	//Encodes inputString using a Rail Fence of length numRails and returns the result
+	/**
+	 * Encodes the input string using a Rail Fence of the specified number of rails and returns the result.
+	 *
+	 * @param numRails the number of rails to use
+	 * @param inputString the message to encode
+	 * @return the encoded message
+	 * @throws InvalidBaseException if the number of rails is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String encode(int numRails, String inputString) throws InvalidBaseException, InvalidInputException{
 		//Set the parameters
 		setNumRails(numRails);
@@ -280,7 +351,15 @@ public class RailFence{
 		encode();
 		return outputString;
 	}
-	//Decodes inputString using a Rail Fence of length numRails and returns the result
+	/**
+	 * Decodes the input string using a Rail Fence of the specified number of rails and returns the result.
+	 *
+	 * @param numRails the number of rails to use
+	 * @param inputString the encoded message to decode
+	 * @return the decoded message
+	 * @throws InvalidBaseException if the number of rails is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	public String decode(int numRails, String inputString) throws InvalidBaseException, InvalidInputException{
 		//Set the parameters
 		setNumRails(numRails);
@@ -291,7 +370,9 @@ public class RailFence{
 		return outputString;
 	}
 
-	//Makes sure all variables are empty
+	/**
+	 * Resets all variables to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 
@@ -300,13 +381,28 @@ public class RailFence{
 		fence = null;
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Returns the input string that was set for encoding/decoding.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the output string after encoding/decoding.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Returns the number of rails used in the Rail Fence cipher.
+	 *
+	 * @return the number of rails
+	 */
 	public int getNumRails(){
 		return fence.length;
 	}

src/main/java/com/mattrixwv/cipherstream/polysubstitution/Trifid.java

@@ -1,7 +1,23 @@
 //CipherStreamJava/src/main/java/com/mattrixwv/cipherstream/polysubstitution/Trifid.java
 //Mattrixwv
 // Created: 03-03-22
-//Modified: 04-19-24
+//Modified: 08-11-24
+/*
+	Copyright (C) 2024  Mattrixwv
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package com.mattrixwv.cipherstream.polysubstitution;
 
 
@@ -17,46 +33,92 @@ import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
 import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
 
 
+/**
+ * The {@code Trifid} class implements the Trifid cipher, a polyalphabetic substitution cipher
+ * that uses a 3x3x3 grid to encode and decode messages.
+ */
 public class Trifid{
 	private static final Logger logger = LoggerFactory.getLogger(Trifid.class);
 
-	//A class representing the location of a character in the grid
+	/** A class representing the location of a character in the grid */
 	protected class CharLocation{
+		/** The x location in the grid */
 		protected int x;
+		/** The y location in the grid */
 		protected int y;
+		/** The z location in the grid */
 		protected int z;
+		/**
+		 * Constructs a CharLocation with the specified x and y coordinates.
+		 *
+		 * @param x the x-coordinate of the character's location
+		 * @param y the y-coordinate of the character's location
+		 * @param z the z-coordinate of the character's location
+		 */
 		public CharLocation(int x, int y, int z){
 			this.x = x;
 			this.y = y;
 			this.z = z;
 		}
+		/**
+		 * Returns the x-coordinate of the character's location.
+		 *
+		 * @return the x-coordinate
+		 */
 		public int getX(){
 			return x;
 		}
+		/**
+		 * Returns the y-coordinate of the character's location.
+		 *
+		 * @return the y-coordinate
+		 */
 		public int getY(){
 			return y;
 		}
+		/**
+		 * Returns the z-coordinate of the character's location.
+		 *
+		 * @return the z-coordinate
+		 */
 		public int getZ(){
 			return z;
 		}
+		/**
+		 * Prints out the location in a human readable format
+		 */
 		public String toString(){
 			return "[" + (z + 1) + ", " + (x + 1) + ", " + (y + 1) + "]";
 		}
 	}
 
-	//Fields
-	protected String inputString;	//The message that needs to be encoded/decoded
-	protected String outputString;	//The encoded/decoded message
-	protected String keyword;		//The keyword used to create the grid
-	protected int groupSize;		//The size of the groups used to break up the input
-	protected char[][][] grid;		//The grid used to encode/decode the message
-	protected char fillIn;	//The character added to the alphabet to meet the 27 character requirement
-	//Settings
-	protected boolean preserveCapitals;		//Persist capitals in the output string
-	protected boolean preserveWhitespace;	//Persist whitespace in the output string
-	protected boolean preserveSymbols;		//Persist symbols in the output string
+	//?Fields
+	/** The message that needs to be encoded/decoded */
+	protected String inputString;
+	/** The encoded/decoded message */
+	protected String outputString;
+	/** The keyword used to create the grid */
+	protected String keyword;
+	/** The size of the groups used to break up the input */
+	protected int groupSize;
+	/** The grid used to encode/decode the message */
+	protected char[][][] grid;
+	/** The character added to the alphabet to meet the 27 character requirement */
+	protected char fillIn;
+	//?Settings
+	/** Persist capitals in the output string */
+	protected boolean preserveCapitals;
+	/** Persist whitespace in the output string */
+	protected boolean preserveWhitespace;
+	/** Persist symbols in the output string */
+	protected boolean preserveSymbols;
 
-	//Makes sure the fillIn is a valid character
+	/**
+	 * Sets the fill-in character used to complete the 27-character requirement for the grid.
+	 *
+	 * @param fillIn the fill-in character
+	 * @throws InvalidCharacterException if the fill-in character is not a printable non-letter character
+	 */
 	protected void setFillIn(char fillIn) throws InvalidCharacterException{
 		//Make sure the character is a printing character
 		if((fillIn < ' ') || (fillIn > '~')){
@@ -72,7 +134,13 @@ public class Trifid{
 		//Save the fillIn character
 		this.fillIn = fillIn;
 	}
-	//Strips invalid characters from the keyword and creates the grid
+	/**
+	 * Processes the keyword to generate the 3D grid. The keyword is sanitized to include
+	 * only capital letters and the fill-in character.
+	 *
+	 * @param keyword the keyword used to create the grid
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 */
 	protected void setKeyword(String keyword) throws InvalidKeywordException{
 		//Ensure the keyword isn't null
 		if(keyword == null){
@@ -104,7 +172,9 @@ public class Trifid{
 		//Create the grid from the sanitized keyword
 		createGrid();
 	}
-	//Creates the grid from the keyword
+	/**
+	 * Creates the 3D grid from the processed keyword.
+	 */
 	protected void createGrid(){
 		logger.debug("Creating grid from keyword");
 
@@ -120,7 +190,12 @@ public class Trifid{
 
 		logger.debug("Completed grid\n{}", getGrid());
 	}
-	//Ensures groupSize constraints
+	/**
+	 * Sets the group size used for encoding and decoding the input string.
+	 *
+	 * @param groupSize the group size
+	 * @throws InvalidBaseException if the group size is less than or equal to zero
+	 */
 	protected void setGroupSize(int groupSize) throws InvalidBaseException{
 		if(groupSize <= 0){
 			throw new InvalidBaseException("Group size must be > 0");
@@ -130,7 +205,13 @@ public class Trifid{
 
 		this.groupSize = groupSize;
 	}
-	//Ensures inputString constraints
+	/**
+	 * Prepares the input string for encoding or decoding by applying preservation settings
+	 * and validating the input.
+	 *
+	 * @param inputString the input string to be processed
+	 * @throws InvalidInputException if the input string is invalid
+	 */
 	protected void setInputString(String inputString) throws InvalidInputException{
 		//Ensure the input string isn't null
 		if(inputString == null){
@@ -165,12 +246,22 @@ public class Trifid{
 			throw new InvalidInputException("Input must contain at least 1 letter");
 		}
 	}
-	//Returns the inputString with only letters
+	/**
+	 * Returns the input string with only valid letters and fill-in characters.
+	 *
+	 * @return the cleaned input string
+	 */
 	protected String getCleanInputString(){
 		logger.debug("Cleaning input string for encoding");
 		return inputString.toUpperCase().replaceAll("[^A-Z" + fillIn + "]", "");
 	}
-	//Returns the location of the given character in the grid
+	/**
+	 * Finds the location of a given character in the 3D grid.
+	 *
+	 * @param letter the character to find
+	 * @return the location of the character
+	 * @throws InvalidCharacterException if the character is not found in the grid
+	 */
 	protected CharLocation findChar(char letter) throws InvalidCharacterException{
 		logger.debug("Finding character {} in grid", letter);
 
@@ -189,7 +280,13 @@ public class Trifid{
 		//If it was not found something went wrong
 		throw new InvalidCharacterException("The character '" + letter + "' was not found in the grid");
 	}
-	//Return the character from the location provided
+	/**
+	 * Retrieves the character at the specified location in the 3D grid.
+	 *
+	 * @param location the location of the character
+	 * @return the character at the specified location
+	 * @throws InvalidCharacterException if the location is out of bounds
+	 */
 	protected char getChar(CharLocation location) throws InvalidCharacterException{
 		if(location.getX() > 2){
 			throw new InvalidCharacterException("x cannot be larget than 2");
@@ -205,7 +302,11 @@ public class Trifid{
 
 		return grid[location.getZ()][location.getX()][location.getY()];
 	}
-	//Adds all non-letter characters back to the output string
+	/**
+	 * Formats the output string according to the preservation settings.
+	 *
+	 * @param outputString the output string to format
+	 */
 	protected void formatOutput(String outputString){
 		logger.debug("Formatting output");
 
@@ -242,7 +343,11 @@ public class Trifid{
 		this.outputString = output.toString();
 		logger.debug("Formatted output '{}'", this.outputString);
 	}
-	//Encodes inputString using a polybius square and stores the result in outputString
+	/**
+	 * Encodes the input string using the Trifid cipher.
+	 *
+	 * @throws InvalidCharacterException if an invalid character is encountered
+	 */
 	protected void encode() throws InvalidCharacterException{
 		logger.debug("Encoding");
 
@@ -308,7 +413,11 @@ public class Trifid{
 		//Format the output
 		formatOutput(output.toString());
 	}
-	//Decodes inputString using a polybius square and stores the result in outputString
+	/**
+	 * Decodes the input string using the Trifid cipher.
+	 *
+	 * @throws InvalidCharacterException if an invalid character is encountered
+	 */
 	protected void decode() throws InvalidCharacterException{
 		logger.debug("Decoding");
 
@@ -380,7 +489,10 @@ public class Trifid{
 	}
 
 
-	//Constructor
+	//?Constructor
+	/**
+	 * Constructs a Trifid object with default settings.
+	 */
 	public Trifid() throws InvalidCharacterException{
 		preserveCapitals = false;
 		preserveWhitespace = false;
@@ -388,6 +500,13 @@ public class Trifid{
 		setFillIn('+');
 		reset();
 	}
+	/**
+	 * Constructs a Trifid object with default settings.
+	 *
+	 * @param preserveCapitals whether to preserve capital letters
+	 * @param preserveWhitespace whether to preserve whitespace
+	 * @param preserveSymbols whether to preserve symbols
+	 */
 	public Trifid(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -395,6 +514,15 @@ public class Trifid{
 		setFillIn('+');
 		reset();
 	}
+	/**
+	 * Constructs a Trifid object with default settings.
+	 *
+	 * @param preserveCapitals whether to preserve capital letters
+	 * @param preserveWhitespace whether to preserve whitespace
+	 * @param preserveSymbols whether to preserve symbols
+	 * @param fillIn the character to use for fill-in characters
+	 * @throws InvalidCharacterException if the fill-in character is invalid
+	 */
 	public Trifid(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols, char fillIn) throws InvalidCharacterException{
 		this.preserveCapitals = preserveCapitals;
 		this.preserveWhitespace = preserveWhitespace;
@@ -403,10 +531,32 @@ public class Trifid{
 		reset();
 	}
 
-	//Encodes inputString using keyword and groupSize and returns the result
+	/**
+	 * Encodes the specified input string using the provided keyword and group size.
+	 *
+	 * @param keyword the keyword used for encoding
+	 * @param inputString the input string to encode
+	 * @return the encoded string
+	 * @throws InvalidBaseException if the group size is invalid
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 * @throws InvalidCharacterException if an invalid character is encountered
+	 */
 	public String encode(String keyword, String inputString) throws InvalidBaseException, InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		return encode(keyword, inputString.length(), inputString);
 	}
+	/**
+	 * Encodes the specified input string using the provided keyword and group size.
+	 *
+	 * @param keyword the keyword used for encoding
+	 * @param groupSize the size of groups
+	 * @param inputString the input string to encode
+	 * @return the encoded string
+	 * @throws InvalidBaseException if the group size is invalid
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 * @throws InvalidCharacterException if an invalid character is encountered
+	 */
 	public String encode(String keyword, int groupSize, String inputString) throws InvalidBaseException, InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		//Set the parameters
 		reset();
@@ -418,10 +568,32 @@ public class Trifid{
 		encode();
 		return outputString;
 	}
-	//Decodes inputString using keyword and groupSize and returns the result
+	/**
+	 * Decodes the specified input string using the provided keyword and group size.
+	 *
+	 * @param keyword the keyword used for decoding
+	 * @param inputString the input string to decode
+	 * @return the decoded string
+	 * @throws InvalidBaseException if the group size is invalid
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 * @throws InvalidCharacterException if an invalid character is encountered
+	 */
 	public String decode(String keyword, String inputString) throws InvalidBaseException, InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		return decode(keyword, inputString.length(), inputString);
 	}
+	/**
+	 * Decodes the specified input string using the provided keyword and group size.
+	 *
+	 * @param keyword the keyword used for decoding
+	 * @param groupSize the size of groups
+	 * @param inputString the input string to decode
+	 * @return the decoded string
+	 * @throws InvalidBaseException if the group size is invalid
+	 * @throws InvalidKeywordException if the keyword is invalid
+	 * @throws InvalidInputException if the input string is invalid
+	 * @throws InvalidCharacterException if an invalid character is encountered
+	 */
 	public String decode(String keyword, int groupSize, String inputString) throws InvalidBaseException, InvalidKeywordException, InvalidInputException, InvalidCharacterException{
 		//Set the parameters
 		reset();
@@ -434,7 +606,9 @@ public class Trifid{
 		return outputString;
 	}
 
-	//Makes sure all variables are empty
+	/**
+	 * Resets all internal variables to their default values.
+	 */
 	public void reset(){
 		logger.debug("Resetting fields");
 
@@ -445,22 +619,52 @@ public class Trifid{
 		grid = new char[3][3][3];
 	}
 
-	//Getters
+	//?Getters
+	/**
+	 * Returns the current input string.
+	 *
+	 * @return the input string
+	 */
 	public String getInputString(){
 		return inputString;
 	}
+	/**
+	 * Returns the current output string.
+	 *
+	 * @return the output string
+	 */
 	public String getOutputString(){
 		return outputString;
 	}
+	/**
+	 * Returns the current keyword.
+	 *
+	 * @return the keyword
+	 */
 	public String getKeyword(){
 		return keyword;
 	}
+	/**
+	 * Returns the current group size.
+	 *
+	 * @return the group size
+	 */
 	public int getGroupSize(){
 		return groupSize;
 	}
+	/**
+	 * Returns the current fill-in character.
+	 *
+	 * @return the fill-in character
+	 */
 	public char getFillIn(){
 		return fillIn;
 	}
+	/**
+	 * Returns a string representation of the 3D grid.
+	 *
+	 * @return the grid as a string
+	 */
 	public String getGrid(){
 		logger.debug("Creating string from grid");