Basic String Cryptography (Scripts) Publisher's description
from Bill Higley
These are three *very* simple codes for implementing the most rudimentary encryption method possible
These are three *very* simple codes for implementing the most rudimentary encryption method possible.
CRYPTOSHIFT.m implements a monoalphabetic shifting substitution encryption. It takes two arguements: the string to be encoded and the amount to shift each letter. To decode, shift backward the same amount you shifted forward.
CRYPTOSUBCODE.m generates, from an input string, a coded string and a key. The key represents the random substitutions made, and is used by CRYPTOSUBDECODE.m along with the encoded string to decode a string.
System Requirements:MATLAB 6.1 (R12.1)
Program Release Status: New Release
Program Install Support: Install and Uninstall