Port to Java by Robert Neild 1999
Only minimum changes made
Chars where used as an easy replacement for unsigned ints

The PC1 Encryption Algorithm
Alexander Pukall 1991
Code free for all

The PC1 cipher uses a 128-bit key.
It's a stream cipher with a retroaction function.

This code was is used in the PEDIT software ( author : Paul Brand )
and CRYPTOGRAPHE 98 ( author : Peter Torris )


