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Annotation of src/usr.bin/encrypt/encrypt.1, Revision 1.21

1.21    ! jmc         1: .\"    $OpenBSD: encrypt.1,v 1.20 2007/03/06 11:19:18 jmc Exp $
1.1       downsj      2: .\"
                      3: .\" Copyright (c) 1996, Jason Downs.  All rights reserved.
                      4: .\"
                      5: .\" Redistribution and use in source and binary forms, with or without
                      6: .\" modification, are permitted provided that the following conditions
                      7: .\" are met:
                      8: .\" 1. Redistributions of source code must retain the above copyright
                      9: .\"    notice, this list of conditions and the following disclaimer.
                     10: .\" 2. Redistributions in binary form must reproduce the above copyright
                     11: .\"    notice, this list of conditions and the following disclaimer in the
                     12: .\"    documentation and/or other materials provided with the distribution.
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                     14: .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
                     15: .\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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1.10      alex       26: .Dd May 18, 1999
1.1       downsj     27: .Dt ENCRYPT 1
1.11      aaron      28: .Os
1.1       downsj     29: .Sh NAME
                     30: .Nm encrypt
1.4       downsj     31: .Nd encrypt passwords from the command line or standard input
1.1       downsj     32: .Sh SYNOPSIS
                     33: .Nm encrypt
1.19      jmc        34: .Op Fl km
1.5       provos     35: .Op Fl b Ar rounds
1.18      millert    36: .Op Fl c Ar class
1.19      jmc        37: .Op Fl p | Ar string
1.1       downsj     38: .Op Fl s Ar salt
1.4       downsj     39: .Nm makekey
1.1       downsj     40: .Sh DESCRIPTION
1.12      aaron      41: .Nm
1.1       downsj     42: prints the encrypted form of
                     43: .Ar string
1.15      aaron      44: to the standard output.
                     45: This is mostly useful for encrypting passwords from within scripts.
1.1       downsj     46: .Pp
1.20      jmc        47: When invoked as
                     48: .Nm makekey ,
                     49: a single combined key and salt are read from standard
                     50: input and the DES encrypted result is written to standard output without a
                     51: terminating newline.
                     52: .Pp
1.13      aaron      53: The options are as follows:
1.16      aaron      54: .Bl -tag -width Ds
1.5       provos     55: .It Fl b Ar rounds
                     56: Encrypt the string using Blowfish hashing with the specified
                     57: .Ar rounds .
1.18      millert    58: .It Fl c Ar class
                     59: Use the cipher type specified in the given user login class.
                     60: See
                     61: .Xr login.conf 5
                     62: for more information.
1.21    ! jmc        63: .It Fl k
        !            64: Run in
        !            65: .Nm makekey
        !            66: compatible mode.
1.1       downsj     67: .It Fl m
                     68: Encrypt the string using MD5.
1.10      alex       69: .It Fl p
                     70: Prompt for a single string with echo turned off.
1.1       downsj     71: .It Fl s Ar salt
                     72: Encrypt the string using DES, with the specified
                     73: .Ar salt .
                     74: .El
                     75: .Pp
                     76: If no
                     77: .Ar string
                     78: is specified,
1.12      aaron      79: .Nm
1.7       deraadt    80: reads one string per line from standard input, encrypting each one
1.14      aaron      81: with the chosen algorithm from above.
1.18      millert    82: In the case where no specific algorithm or specific user login class was given
                     83: as a command line option, the algorithm specified in the default class in
1.17      millert    84: .Pa /etc/login.conf
                     85: will be used.
1.5       provos     86: .Pp
1.18      millert    87: For MD5 and Blowfish, a new random salt is automatically generated for each
1.5       provos     88: password.
                     89: .Pp
1.11      aaron      90: Specifying the
1.3       downsj     91: .Ar string
                     92: on the command line should be discouraged; using the
                     93: standard input is more secure.
1.5       provos     94: .Sh FILES
1.17      millert    95: .Bl -tag -width /etc/login.conf -compact
                     96: .It Pa /etc/login.conf
1.5       provos     97: .El
1.1       downsj     98: .Sh SEE ALSO
1.5       provos     99: .Xr crypt 3 ,
1.17      millert   100: .Xr login.conf 5
1.1       downsj    101: .Sh HISTORY
1.12      aaron     102: .Nm
1.6       millert   103: first appeared in
                    104: .Ox 1.2 .
1.4       downsj    105: .Pp
                    106: A
                    107: .Nm makekey
1.11      aaron     108: command appeared in
1.4       downsj    109: .At v7 .