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 There is no warranty of merchantability nor any warranty of fitness for a particular purpose nor any other warranty, either express or implied, as to the accuracy of the enclosed materials or as to their suitability for any par- ticular purpose. Accordingly, Bell Telephone Laboratories assumes no responsibility for their use by the recipient. Further, Bell Laboratories assumes no obligation to furnish any assistance of any kind whatsoever, or to furnish any additional information or documentation.