Substitution Cipher Download
Substitution Cipher will allow the encryption and decryption of data using monoaphabetic substitution. The Key button permits settting of the user-defined cipher alphabet and this must be set before you can encrypt or decrypt data. Our implementation of this cipher allows you to define any cipher alphabet you wish, provided it contains each of the twenty six letters, with no spaces or non-alphabetic characters.
Using the Open Plaintext or Open Ciphertext buttons on the tool bar, you may open a standard text (.txt) file or Substitution Cipher text (.stc) file for processing. The size of the file in bytes, and the file name and path, are displayed on the status bar. Using the Close Plaintext or Close Ciphertext buttons, the data stores and displays are cleared.
