New quantum computers are coming from Nec!
They could break RSA code!
Not so easy to crack a Medioeval code! See
The code of Johannes Trithemius, by I. Peterson
See the paper by J. A. Reeds Steganographia
One of the best sources for Steganography and Watermarks: Fabien Petitcolas page
See also:
Eric
Free Steganographic Software
OTHER LINKS: