11/29/2023 0 Comments 2 polybius square decrypt![]() ![]() Each character on the plain text is located inside of the Polybius Square, and the far left and top characters of the Square of this position are selected and saved.File Encryption or Decryption is not available in this mode About the Cypher ![]() Smart Mode doesn't allow Keys longer than 10 chars and Text longer than 30 chars (60 for Decryption). The name of the Custom Square must have the following suffix: "_customSquare" Limitations If the user changes the name of the Text File, the new name needs to respect the suffix given (see below) Import Square:Īllows the user to import a Customized Square to use it in the Cypher. It's meant to give an easier and more friendly way to create a customized Square, though the user must be careful with the format of the Square. The Text File can be open in a text processor and the Custom Square modified easily in the Text File to import it later. The Custom Square created can be exported to a Text file in order to import it in the future Create a Default Square:Ĭreates automatically a basic Custom Square Text File. ![]() The Smart Square Mode allows the user to change the Square of the Cypher: Write Your Own Square:Īllows the user to Input his/her own square to change the Default Square of the Cypher. ![]() Same as "Direct Encryption-Decryption" but with the "Showing Work" feature in both operations Direct Encryption-Decryption Showing Work:.Same as "Encryption Showing Work" but with the Decryption process Sorted Matrix: Matrix sorted by the Encryption key.Encryption Key: Alphabetically ordered Key.Matrix: Matrix created with the Key on top and the output of the text passed through the Square.The Square used (if customized, see bellow).The Smart Mode allows the user to go further in the understanding of the mechanisms of the cypher: Direct Encryption-Decryption:Īllows the user to have an automatic view of the output of both operations with the same text Encryption Showing Work:Īllows the user to see the different steps done by the Cypher, showing: The files can be added writing their names or selecting from a list of Text Files from the application main folder Smart Mode The application allows the user to encrypt and decrypt files (.txt). For Files, the user must give a name for the output File (which will be created), where the decrypted text will be saved onceĪll features are accessible through the different Menus Files The decrypted text will be shown when the Key and the ciphered Text are given. Different keys will output different messages with the same ciphered text. To Decrypt a ciphered Text/File, the Key for Decryption must match the Key given to Encrypt the original version of the ciphered Text/File. To Decrypt there's need of a Key and Text (or File). For Files, the user must give a name for the output File (which will be created), where the ciphered text will be saved once the encryption is done. The ciphered text doesn't have any trailing or leading spaces if copy-paste used, please mind this. The ciphered text will be shown when the Key and the Text are given. Different Keys will output different ciphered texts for the same Text/File. To Encryp there's need of a Key and Text (or File). Requirementsīrowse the Menu to find the different options: Encrypt, Decrypt or the Smart Mode Options (Special Features, see below). This application encrypts text and decrypts ciphered text using an ADFGVX cipher, a fractionating transposition cipher which combines a modified Polybius square with a single columnar transposition. POLYBIUS SQUARE CYPHER Author: Andres Penas Palmeiro Final Project for the Module "Object Oriented Programming" of the H.Dip in Computer Science in Software Development - GMIT Version: 1.0 (Aug 2019) Summary ![]()
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