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CRYPT (I)                   10/23/71                    CRYPT (I)





NAME            crypt -- encode/decode



SYNOPSIS        crypt [ password ]



DESCRIPTION     crypt is an exact implementation of Boris

                Hagelin's cryptographic machine called the M-209

                by the U. S. Army [1].



                crypt reads from the standard input file and

                writes on the standard output.  For a given pass-

                word, the encryption process is idempotent; that

                is,



                        crypt znorkle <clear >cypher

                        crypt znorkle <cypher



                will print the clear.



                crypt is suitable for use as a filter:



                        pr <"crypt bandersnatch"<cypher





FILES           --



SEE ALSO        [1] U. S. Patent 2,089,603.



DIAGNOSTICS     --



BUGS            --