Re: xor data hiding?

J. Michael Diehl says:

I heard something interesting which made me think. (gasp)

I heard that if you encrypt a file with the xor encryption alg. multiple times with different keys, you get an encrypted file with a coorisponding effective key which has some interesting properties. The key in such a system would have a length equal to the Least Common Multiple of the lengths of the original key.

Sadly, the Friedmans already cracked the "multiple repeating xored keys" cypher a while back -- about fifty years ago. Don't be embarassed, by the way -- everyone comes up with cyphers that have been cracked before. However, I would suggest reading "The Codebreakers" and the current literature before proposing new systems. Perry