**rot13**,
a MATLAB code which
is given a string and applies the ROT13 cipher to characters and
the ROT5 cipher to digits.

For example, we have:

Input: Output: abcdefghijklmnopqrstuvwxyz nopqrstuvwxyzabcdefghijklm Cher Pure James Thurston Howell Wnzrf Guhefgba Ubjryy 0123456789 56789012345

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

**rot13** is available in
a C version and
a C++ version and
a FORTRAN90 version and
a MATLAB version and
a Python version.

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

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

chrpak, a MATLAB code which works with characters and strings.

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

filum, a MATLAB code which can work with information in text files.

monoalphabetic, a MATLAB code which can apply a monoalphabetic substitution cipher to a string of text.

- ch_to_rot13.m, converts a character to its ROT13 encoding;
- s_quote.m quotes a string;
- s_to_rot13.m, applies ROT13/ROT5 ciphers to a string.