C70:info-cpm (07/13/82)
>From w8sdz@BRL Tue Jul 13 00:24:06 1982
What makes crypt.c better or more desirable than Ward Christensen's
SCRAMBLE.ASM? His works on both ASCII and binary files and uses
an 8-character key word which is exclusive-or'ed with the data.
It uses a pseudo-random number generator as well, and I believe
does not suffer from the problem of the key being easily spotted
in a field of binary zeros.