monoalphabetic

monoalphabetic, an Octave code which applies a monoalphabetic substitution cipher to a string of text.

A code is specified by listing 26 symbols that are to be used to replace the characters "A" through "Z" in the text. Before encryption, the string is capitalized. The same code can be used to reverse the encryption process.

Licensing:

The information on this web page is distributed under the MIT license.

Languages:

monoalphabetic is available in a MATLAB version and an Octave version and a Python version.

Related Programs:

monoalphabetic_test

atbash, an Octave code which applies the Atbash substitution cipher to a string of text.

caesar, an Octave code which can apply a Caesar Shift Cipher to a string of text.

chrpak, an Octave code which works with characters and strings.

dictionary_code, an Octave code which demonstrates how a text file can be compressed and decompressed using a dictionary code.

filum, an Octave code which can work with information in text files.

rot13, an Octave code which can encipher a string using the ROT13 cipher for letters, and the ROT5 cipher for digits.

Source Code:

• mono_decrypt.m decrypts a string.
• mono_encrypt.m encrypts a string.