Re: Jail Cell Cipher (modified RC4)

[AARG! Anonymous]

Paul Crowley has shown that Schneier's Solitaire cipher is insecure.
See http://www.ciphergoth.org/crypto/solitaire/.  Repetitions occur with
frequence 1/22.5 rather than 1/26 as they should.  Also, the state
machine is not reversible, contrary to the design intent.