Ausam/doc/man/man1/crypt.1

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including files from this version of Unix. 
.th CRYPT I "May 79"
.sh NAME
crypt \*- encode/decode
.sh SYNOPSIS
.bd crypt
[password]
.sh DESCRIPTION
.it crypt
simulates a cryptographic machine.
.s3
.it crypt
reads from the standard input file and writes on the standard output.
It is thus suitable for use as a filter. For a given password,
the encryption process is idempotent; that is,
.s3
.in +7
.bd "crypt\ znorkle\ <clear\ >cypher"
.br
.bd "crypt\ znorkle\ <cypher"
.in -7
.s3
will print the clear.
.s3
.it crypt
protects the password from prying by
.bd ps\c
(I).