vigenere cipher java githubvigenere cipher java github

I tested this code with your test case and a couple others: It returns the same results as your code for the first case and your test case. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The library contains three simple ciphers: rail-fence, rotating square and wizner cipher. GitHub is where people build software. I highly recommend this site if you are in need of some five star service!! If any case (Di) value becomes negative (-ve), in this case, we will add 26 in the negative value. A little bit of history (extract from wikipedia): the Vigenre cipher is a method of encrypting alphabetic text by using a series of interwoven Caesar ciphers, based on the letters of a keyword. In order to solve this problem set, a clever strategy may be to figure out how many times you need to repeat the keyword so that it matches up with the message. I've only finished the encrypting portion of the program, but I stopped when I realized it wasn't working well. So use row G and column A of the Vigenre square, namely G. Similarly, for the second letter of the plaintext, the second letter of the key is used, the letter at row E, and column Y is C. The rest of the plaintext is enciphered in a similar fashion. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If no plaintext is found the ciphertext is decrypted in the given path_to_plaintext file. Clone with Git or checkout with SVN using the repositorys web address. More than 100 million people use GitHub to discover, fork, and contribute to over 330 million projects. Use it on any project right now until this awesome deal expires. GitHub is where people build software. Thanks to the maven-shade-plugin, this external dependency is included in the packaged JAR. Due Date: Monday, December 2, 2019 Total Points: 10 Implement a Java program that encrypts a message using the Vigenere Cipher. And how to capitalize on that? An effective way of doing this is to use the mathematical, You will write your solution in a function called. What it's doing is appending keyword to key until it's the same length as text. You can track the progress and be sure your project is gonna be ready on time. * * * prints the result of each attempt to the interactions panel. Any project, any topic, any subject just tell us what you need. Add a description, image, and links to the To generate a new key, the given key is repeated in a circular manner, as long as the length of the plain text does not equal to the new key. It uses a Vigenere table or Vigenere square for encryption and decryption of the text. This file contains 4 functions and a main: * * crack (): It takes a variable that indicates the length of the keyspace and ciphertext. GraalVM provides a great tool: "Native Image" which allows us to generate an executable for our CLI. (NOT interested in AI answers, please). rev2023.4.17.43393. To learn more, see our tips on writing great answers. 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Your privacy is important, so we encrypt all the personal data provided. Note: breaking a Vigenere cipher through statistical analysis requires a ciphertext with a large number of characters. What information do I need to ensure I kill the same process, not one spawned much later with the same PID? * * * of 3, you can get everything from AAA to ZZZ). It tells me. The column of plain text "J" and row of key "B" intersects the alphabet of "K" in the vigenere table, so the first letter of ciphertext is "K". Task Outline. Why is a "TeX point" slightly larger than an "American point"? The first letter of the plaintext, G is paired with A, the first letter of the key. It employs a form of polyalphabetic substitution. Thanks for contributing an answer to Code Review Stack Exchange! Will output: "Icatwhe ms dlc Hgvvvme vmzlcd !". Rather than appending character by character, we append whole copies of the string. Could a torque converter be used to couple a prop to a higher RPM piston engine? The Vigenere Cipher improves upon the Caesar Cipher by encrypting a message using a sequence of keys, also known as a keyword. The first letter of the plaintext is combined with the first letter of the key. I have been using this website for about 2 years now and they have always been able to help me out and do what I needed them to do and a perfect cost! Implements basic cryptography functions for a security project. When the vigenere table is not given, the encryption and decryption are done by Vigenar algebraically formula in this method (convert the letters (A-Z) into the numbers (0-25)). Find centralized, trusted content and collaborate around the technologies you use most. For example, in the row of the key is "B" and the ciphertext is "K" and this ciphertext letter appears in the column "J", that means the first plaintext letter is "J". Bad? Space Complexity :O(n), here n is the length of the string(here str). This makes it easier to reuse classes, as you can copy just the files that you need. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. No description, website, or topics provided. I have been using study bay for nearly two years now and my writer HaroldCH has provided top star quality. The vigenere cipher is an algorithm of encrypting an alphabetic text that uses a series of interwoven caesar ciphers. Connect and share knowledge within a single location that is structured and easy to search. Are you sure you want to create this branch? This algorithm was first described in 1553 by Giovan Battista Bellaso. Great work! Add vigenere.exe parent folder to PATH environment variable. The dictionary must be a text file with a word per line, not necessarily sorted. If c is past the end of the alphabet, reset c to the start of the alphabet. You signed in with another tab or window. At different points in the encryption process, the cipher uses a different alphabet from one of the rows. My comments are mainly aimed at readability with a slight nod to performance. To understand the non-uniform distribution of English letters and how that may be exploited in cryptanalysis. Could a torque converter be used to couple a prop to a higher RPM piston engine? Either the pair (key, plaintext) or (key, ciphertext) has to exist. Copyright 2011-2021 www.javatpoint.com. Your payment goes to an expert only after you accepted the project. vigenere-cipher Implementation of the cryptographic algorithm Vigenere, this is code for encrypting plaint text using vigenere. Implementacion del cifrador Caesar y Vigenere, Attempts of Decryption of Vigenere cipher with a non-repeating key. This article is contributed by Ayush Khanduri. How do I generate random integers within a specific range in Java? GitHub Gist: instantly share code, notes, and snippets. You need at least JDK 11 (OpenJDK is recommended). char[] cipherChars = new char[cipherLength]; int[] cipherAscii = new int[cipherLength]; String[] clearString = new String[cipherLength]; int[] clearAscii = new int[cipherLength];; // Store the key as an array of chars and store the Ascii values, // Store the cipher as an array of chars and store the Ascii values, for (int i = 0; i < cipher.length(); i++) {. To review, open the file in an editor that reveals hidden Unicode characters. Note: only tested with Oracle JDK 7. vigenere-cipher StringBuilder sb = new StringBuilder(key); if ( (int) key.charAt(keyspace - 1) == 90 ) {, if ( (int) key.charAt(keyspace - i) == 90 ) {. Ive had the best homework assistance using studybay. This saves the problem of maintaining keywordIndex. We use cookies according to the settings of your browser. Single and double columnar transposition ciphers. This algorithm was first described in 1553 by Giovan Battista Bellaso. A tag already exists with the provided branch name. Is Java "pass-by-reference" or "pass-by-value"? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. This earned it the description le chiffre indchiffrable (French for 'the indecipherable cipher'). It performs a brute. All rights reserved. $5 will be added to your balance once you sign up. Then it's easier to see that the progression is intentional and not accidental. Withdrawing a paper after acceptance modulo revisions? It uses a simple form of polyalphabetic substitution. A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The purpose of this code seems to be to fill in the section of of the square corresponding to the letters in the alphabet. This dll (from Microsoft Visual C++ 2015 Redistributable Update 3 RC) can be placed in the same directory as the exe, or in C:\Windows\System32. Im very grateful! The encryption of the original text is done using the Vigenre square or Vigenre table. Simple Vigenre Cipher GUI program in Java. * Description: This class is for working with Vigenere ciphers. Clone or download the vigenere-cipher project. Basic cryptography algorithms implemented in Java. How do I read / convert an InputStream into a String in Java? Etc. HSK6 (H61329) Q.69 about "" vs. "": How can we conclude the correct answer is 3.? 2011 2023 Studybay All Rights Reserved, Congrats! By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. This algorithm is easy to understand and implement. It performs a brute, * * * force attack on the cipher with all keys in the provided keyspace by calling decrypt() and nextKey(). topic page so that developers can more easily learn about it. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. In Java, it's standard to put each class in its own file. Just give proper instructions and your work is done. Dancan Momanyi Makes studybay a great choice for anything you need for getting good grades. Decrypt a Vigenre cipher in *any* language without knowing the keys used for polyalphabetic substitution by performing frequency analysis and comparing categorical probability distributions. Decryption:Decryption is performed by going to the row in the table corresponding to the key, finding the position of the ciphertext letter in this row, and then using the columns label as the plaintext. "Counter" is for how many times must we prolong keyword to match the length of the plaintext, i put +3 at the end to be sure but i think +1 is enough. Encryption/Decryption. If the plaintext is found it is encrypted into the path_to_ciphertext folder. Learn more about Stack Overflow the company, and our products. rev2023.4.17.43393. Accurate Good job . Would highly recommend if you need help. public class vigenere { public static void main (String [] args) { String encryptedMessage = ""; String extended = ""; int temp, counter; String plain_text = JOptionPane.showInputDialog ("Enter the text you wish to encrypt: "); String keyword = JOptionPane.showInputDialog ("Enter the keyword: "); counter = plain_text.length () / keyword.length () Web-CAT: Submit Java programs to this automated grading platform. To associate your repository with the Simply import the project in your IntelliJ IDEA and build it. Life saver Amazing site students who are struggling with their academics. It only takes a minute to sign up. AZ becomes BA. A becomes B. AA becomes AB. We know the length, so tell the code. All of them have successfully passed Studybay examinations and proven their competence to the QA team. What does Canada immigration officer mean by "I'm not satisfied that you will leave Canada based on your purpose of visit"? You can directly run the compiled JAR with the java -jar command. What screws can be used with Aluminum windows? Are table-valued functions deterministic with regard to insertion order. Dystopian Science Fiction story about virtual reality (called being hooked-up) from the 1960's-70's. vigenere-cipher I encourage anyone to use it if you have a challenging assignment. This service is a legit one. Tool to encode and decode simple ciphers. This InfoQ article Build Great Native CLI Apps in Java with Graalvm and Picocli provides details on setting up the GraalVM toolchain for creating native images. What kind of tool do I need to change my bottom bracket? I didn't check the others against your code, as I thought of them after I made modifications. Use MathJax to format equations. This beautifully-built GUI application is made for ENTERTAINMENT PURPOSES only! Will output: "Welcome to the Vigenre cipher !". Um, I do know there are "standard" ways of making vigenere ciphers on Java, but I haven't learned some things they are using, so I would like to know what you find wrong with this program. What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it? Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. A more easy implementation could be to visualize Vigenre algebraically by converting [A-Z] into numbers [025]. Not the answer you're looking for? Note: Di denotes the offset of the i-th character of the plaintext. Making statements based on opinion; back them up with references or personal experience. Implements Caesar, Vigenere, and Vernam cipher shifting encoding and decoding messages. Once you have this comparison value, you want to determine the next largest integer value. An enhanced version of traditional vigenere cipher is implemented in java that eliminates the chances of Kaisiski and Friedman attack. It is an example of a polyalphabetic substitution cipher. One way to do this is to divide the length of the message by the length of the keyword. I never expect anything less from him as he does great work and produce great grades!!! The key will be written both on the standard output and a file named key_path_to_plaintext (notice the prefix). Like offset of A is 0 and of B is 1 and so on. Also, I am VERY new to this, so this code is as basic as it can get xD, Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. First, select the row of the key letter, find the ciphertext letter's position in that row, and then select the column label of the corresponding ciphertext as the plaintext. . Vigenere Cipher Algorithm - Java. How can I drop 15 V down to 3.7 V to drive a motor? A tag already exists with the provided branch name. To associate your repository with the When the vigenere table is given, the encryption and decryption are done using the vigenere table (26 * 26 matrix) in this method. Restart Command Prompt to reload the environment variables. This algorithm is easy to understand and implement. Note: all files are overwritten without prompt! The start of the alphabet is always defined as 'a', but you calculate the end from the start and LETTERS_IN_ALPHABET. Highly recommend this website if you need any help with literally ANYTHING! * the moment the Vigenere cipher employed is parallel with this table: * https://upload.wikimedia.org/wikipedia/commons/9/9a/Vigen%C3%A8re_square_shading.svg, * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * *, public static String encrypt(String key, String clear) {. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The native binary we just created works fine on the machine where we just built it, but when you run it on a different Windows machine, you may have an error which reports that the VCRUNTIME140.dll is missing. There are 26 characters in alpha, so valid indexes are 025. Vigenre cipher, keyed Vigenre cipher and autokey cipher. The user is allowed to either encrypt/decrypt some text file or break a given ciphertext without knowing the key nor the key length. Calculadora criptografica com as cifras de Csar, Monoalfabtica, Playfair, Vigenre e Enigma. You get the best offers for the lowest prices. You signed in with another tab or window. The first thing to do here is to give the StringBuilder an initial capacity. Please mail your requirement at [emailprotected] Duration: 1 week to 2 week. When, * * * called from a loop, as it is in crack(), it can generate all the keys in a given keyspace (e.g. http://www.math.sjsu.edu/~foster/dictionary.txt. clearAscii[i] = cipherAscii[i] - (keyAscii[j] - 65); if (clearAscii[i] < 65) clearAscii[i] = clearAscii[i] + 26; clearString[i] = Character.toString ((char) clearAscii[i]); // Link the strings from clearString[] into one big string, public static void crack(int keyspace, String cipher) {. Alternatively all the classes are in the src folder and can be compiled manually using javac. It is an example of a polyalphabetic substitution cipher. I love studybay, I don't even stressed about my class papers anymore lol. Then use the following command to check whether the variable was set correctly: To build native images using the Java 11 version of GraalVM (19.3.0 and greater), you can install the Visual C Build Tools Workload for Visual Studio 2017 Build Tools using. Why not just make them constants and do away with LETTERS_IN_ALPHABET? How can I detect when a signal becomes noisy? If the plaintext is found it is encrypted into the path_to_ciphertext folder. Mail us on [emailprotected], to get more information about given services. During the first iteration of the loop, c is set to ALPHABET_START, just as it was in the original code. topic, visit your repo's landing page and select "manage topics.". You signed in with another tab or window. JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. You signed in with another tab or window. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. It can be adjusted to work with other intervals, but at. You signed in with another tab or window. This website is very user friendly. Note: I'm not commenting on this method of encryption. How can I drop 15 V down to 3.7 V to drive a motor? Like, the third letter of the ciphertext; JavaTpoint offers too many high quality services. Vigenere Cipher Algorithm - Java. By using our site, you The vigenere cipher is an algorithm of encrypting an alphabetic text that uses a series of interwoven caesar ciphers. They are amazing and provide the best help! A java class for encrypting, decrypting, and breaking (with brute force) Vigenere ciphers. Calculadora criptografica com as cifras de Csar, Monoalfabtica, Playfair, Vigenre e Enigma. I still have to add spaces, so far it only encrypts messages without any spaces, but it can be as long as I want. * Description: This class is for working with Vigenere ciphers. Developed by JavaTpoint. Here's mine, it simply makes a new variable that will hold encrypted message and stores changed characters there based on ASCII value. It also provides better security against cryptanalysis and pattern prediction. How to provision multi-tier a file system across fast and slow storage while combining capacity? I used a GUI, but you can use the cipher and uncipher methods of the TranslateTextListener class with console input and output. Are you sure you want to create this branch? Many people have tried to implement encryption schemes that are essentially Vigenre ciphers. Picocli is used to provide the CLI. ; A keyword is an alphabetical string, where a represents 0, b represents 1, c represents 2, and so on, all . java Vigenere -encdec path_to_plaintext path_to_key path_to_ciphertext. Also note that index is not actually an index. The table consists of the alphabets . Thank you so much!!! A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. Time Complexity : O(n), where n is the length of the string(here str). Good? Should also work with OpenJDK 7 though. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. A Java program that decrypts cryptograms without keys using frequency analysis. package com.testing; import java.util.Scanner; /** * A Vigenere Square or Vigenere table consists of the alphabet written out 26 * times . This is an implementation of Vigenere cipher in Java. Youre protected while using Studybay. It. This is an argument in favor of published unit tests. How to divide the left side of two equations by the left side is equal to dividing the right side by the right side? Should the alternative hypothesis always be the research hypothesis? Why are parallel perfect intervals avoided in part writing when they are so common in scores? You can now use Vigenre cipher CLI everywhere you want on your computer ! As soon as you need it set a deadline to get it completed on time. Basic cryptography algorithms implemented in Java. I am happy with the website and request them to consider the 25-30% of service charge over the tutors fee.. Either the pair (key, plaintext) or (key, ciphertext) has to exist. Java version of the Vigenre cipher (created in 1553), now breakable (since 1863). This is more flexible than the original, as we can alter both the start and end via the constants. Your project is gon na be ready on time initial capacity that the progression is and... Calculadora criptografica com as cifras de Csar, Monoalfabtica, Playfair, Vigenre e.... Answer to code Review Stack Exchange is more flexible than the original vigenere cipher java github different! A word per line, not necessarily sorted is any cipher based on opinion ; back them with. A, the first iteration of the plaintext is found it is an algorithm of encrypting an alphabetic that! I encourage anyone to use it on any project, any topic, visit your repo 's landing page select. Always defined as ' a ', but at can we conclude the answer! Files that you need it set a deadline to get it completed on time is. Is always defined as ' a ', but at be to visualize Vigenre algebraically by converting A-Z... And wizner cipher `` American point '' immigration officer mean by `` I 'm not satisfied that you need least. Away with LETTERS_IN_ALPHABET PHP, web Technology and Python avoided in part writing when they are so common scores. Great grades!!!!!!!!!!!!... 0 and of B is 1 and so on any project, any subject just tell us what you at... Is included in the packaged JAR cipher shifting encoding and decoding messages higher RPM piston engine table-valued functions with... Cifrador Caesar y Vigenere, and contribute to over 330 million projects, to more... Idea and build it challenging assignment cipher is implemented in Java, Reach developers & technologists share knowledge... Company, and Vernam cipher shifting encoding and decoding messages on [ ]! 1960'S-70 's in AI answers, please ) favor of published unit tests topic, your! Million projects end of the alphabet the dictionary must be a text file with a number! Functions deterministic with regard to insertion order in a function called to exist to understand the non-uniform of... Compiled differently than what appears below the lowest prices Amazing site students who are struggling with academics... 'S doing is appending keyword to key until it 's the same length text! Get more information about given services successfully passed studybay examinations and proven their competence to QA! And how do I read / convert an InputStream into a string in that., G is paired with a word per line, not necessarily sorted bay for nearly years! Of doing this is an implementation of the original, as you can directly run the JAR. Stores changed characters there based on your purpose of visit '' ] Duration 1... $ 5 will be written both on the standard output and a file system across fast slow! Study bay for nearly two years now and my writer HaroldCH has provided top star.... Java that eliminates the chances of Kaisiski and Friedman attack next largest value! Ready on time and how do I read / convert an InputStream into a string Java! Is equal to dividing the right side H61329 ) Q.69 about ``:. Java version of the rows Duration: 1 week to 2 week being hooked-up ) from the of. Length as text ' ) of interwoven Caesar ciphers web Technology and.... Them after I made modifications a sequence of keys, also known as a keyword 'm not satisfied you. Or `` pass-by-value '' Java version of traditional Vigenere cipher in Java.Net. Text that may be exploited in cryptanalysis up with references or personal experience like offset of the.... On opinion ; back them up with references or personal experience as text, trusted content collaborate. 11 ( OpenJDK is recommended ) within a single location that is structured and easy to.... The Description le chiffre indchiffrable ( French for 'the indecipherable cipher '.. Message using a sequence of keys, also known as a keyword an InputStream into a string in Java next... What kind of tool do I need to ensure I kill the same length as text text that may exploited... Now use Vigenre cipher, keyed Vigenre cipher ( created in 1553 by Giovan Battista Bellaso fork, and cipher. Bidirectional Unicode text that may be interpreted or compiled differently than what appears below and. Are 26 characters in alpha, so creating this branch may cause unexpected behavior contains bidirectional Unicode text may... Is code for encrypting plaint text using Vigenere quality services this file contains bidirectional Unicode text that uses a of! Was first described in 1553 by Giovan Battista Bellaso the prefix ) be! Or break a given ciphertext without knowing the key H61329 ) Q.69 ``... Be compiled manually using javac service, privacy policy and cookie policy of. The mathematical, you want to determine the next largest integer value n't even about... Cipher based on your computer how do I need to change my bottom?! Provides a great choice for anything you need at least JDK 11 ( OpenJDK is recommended ) cifras! And Vernam cipher shifting encoding and decoding messages is the length of the string ( here str ) associate. Reveals hidden Unicode characters expect anything less from him as he does great work and produce great grades!!. A higher RPM piston engine lowest prices and build it I never expect anything less from him he! Gui, but I stopped when I realized it was in the src folder and can be adjusted to with. To associate your repository with the website and request them to consider the 25-30 % service! Force ) Vigenere ciphers story about virtual reality ( called being hooked-up from. Your requirement at [ emailprotected ], to get it completed on time may be exploited cryptanalysis. Playfair, Vigenre e Enigma and collaborate around the technologies you use most alphabetic text that a. About it that reveals hidden Unicode characters with Git or checkout with SVN the! An argument in favor of published unit tests higher RPM piston engine proper instructions and your work is.! Cipher CLI everywhere you want to create this branch may cause unexpected behavior read / convert an InputStream into string... Use GitHub to discover, fork, and our products result of attempt! Is Java `` pass-by-reference '' or `` pass-by-value '' 1 and so on the standard and! As he does great work and produce great grades!!!!!!!!!. Ciphertext is decrypted in the section of of the plaintext is combined the... Cipher uses a Vigenere table or Vigenere square for encryption and decryption of the string ( here )! Output: `` Native Image '' which allows us to generate an executable our. Mathematical, you want to determine the next largest integer value deterministic with regard to insertion order past the from. A non-repeating key star quality: how can we conclude the correct answer is 3. settings your! I drop 15 V down to 3.7 V to drive a motor service charge over the tutors fee in... ( not interested in AI answers, please ) no plaintext is combined with first! Project is gon na be ready on time implemented in Java the Simply import the project in IntelliJ. You will write your solution in a function called ), Where developers & technologists private! That is structured and easy to search answer is 3. is past end! Into numbers [ 025 ] a polyalphabetic cipher is any cipher based on substitution, using multiple substitution.... Contains bidirectional Unicode text that may be interpreted or compiled differently than appears. Rss reader Description le chiffre indchiffrable ( French for 'the indecipherable cipher ' ) key, )! Never expect anything less from him as he does great work and produce grades! Java program that decrypts cryptograms without keys using frequency analysis easy implementation could be fill. An argument in favor of published unit tests in cryptanalysis can now use Vigenre cipher ( created in by... Where developers & technologists share private knowledge with coworkers, Reach developers & technologists share knowledge! Ciphertext without knowing the key nor the key will be written both on the standard output and file!, please ) folder and can be compiled manually using javac * Description: this class is for working Vigenere... Rpm piston engine classes are in the section of of the message by the right side drop 15 down. Git commands accept both tag and branch names, so creating this branch keyword to key it! Algorithm was first described in 1553 by Giovan Battista Bellaso cipher ' ) want on your computer top star.! `` manage topics. `` with console input and output deterministic with regard insertion... A function called implementation of Vigenere cipher in Java the interactions panel instantly share code, as we can both. Could a torque converter be used to couple a prop to a fork outside of the (., reset c to the QA team: instantly share code, as I thought of them have successfully studybay! Your IntelliJ IDEA and build it copy and paste this URL into your RSS reader dystopian Fiction! Standard to put each class in its own file appending keyword to key until it 's easier vigenere cipher java github reuse,. From one of the key and our products pattern prediction less from as... Rail-Fence, rotating square and wizner cipher Stack Overflow the company, and may belong any. Complexity: O ( n ), Where developers & technologists share private knowledge with,. Officer mean by `` I 'm not commenting on this repository, and contribute to over 330 projects. An example of a polyalphabetic cipher is any cipher based on substitution, using substitution! Easier to reuse classes, as we can alter both the start and LETTERS_IN_ALPHABET methods the!

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