CRYPT(1) CRYPT(1)
NAME
crypt, encrypt, decrypt - encode/decode
SYNOPSIS
crypt [ password ]
encrypt [ password ]
decrypt [ password ]
DESCRIPTION
These commands read from the standard input and write on the
standard output. The password is an enciphering key. If no
password is given, one is demanded from the terminal; echo-
ing is turned off while it is being typed in. Crypt uses a
relatively simple, fast method (rotor machine) for both
enciphering and deciphering. Encrypt and decrypt use a more
robust, slower method (Data Encryption Standard). Files
enciphered by crypt are compatible with those treated by the
editor ed in encryption mode. Files enciphered by crypt are
not intelligible to decrypt, and vice versa.
It is prudent to supply the key from the terminal, not from
the command line, and to pick a reasonably long (6 letters)
and unobvious key. Remember, too, that encipherment cannot
frustrate adversaries with super-user privileges.
FILES
/dev/tty for typed key
SEE ALSO
ed(1), makekey(8)
BUGS
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