Simple Cipher Encryption Program
Usage
crypt [encryptionmethod]
Enrypt stdin with one of several methods. Encrypted output is printed
to stdout, additional information to stderr.
The output of crypt consists only of lowercase letters, spaces,
and newlines. It is suitable as input for vcb
and scb .
Enryption Methods
 v vigenerekey

Stdin is encrypted using the vigenere key provided and
then printed to stdout.
The scheme below lists number of shifts that is associated with each letter.
The key and the inverse key are printed to stderr.
 s randomseed

Initializes the seed of the random number generator
and then creates a random permutation of space and the 26 lower
case letters. stdin is then encrypted using this permutation
and printed to stdout. The permutation and its inverse are printed
to stderr. The permutations are encoded using the scheme below.
 f
 No encryption just filtering. Letters are converted to lowercase, newlines are
left unchanged, everything else is converted to space.
 h
 Print help message.
Encoding Scheme
space a b c d e f g h i j k l m n o p q r s t u v w x y z
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Last Update: 15.04.96 (Format: DD.MM.YY)