PASSWD(1) | OpenSSL | PASSWD(1)

# NAME

openssl-passwd, passwd - compute password hashes

# LIBRARY

libcrypto, -lcrypto

# SYNOPSIS

openssl passwd [-help] [-crypt] [-1] [-apr1] [-aixmd5] [-5] [-6] [-salt string] [-in file] [-stdin] [-noverify] [-quiet] [-table] [-rand file...] [-writerand file] {password}

# DESCRIPTION

The passwd command computes the hash of a password typed at run-time or the hash of each password in a list. The password list is taken from the named file for option -in file, from stdin for option -stdin, or from the command line, or from the terminal otherwise. The Unix standard algorithm crypt and the MD5-based BSD password algorithm 1, its Apache variant apr1, and its AIX variant are available.

# OPTIONS

-help
  Print out a usage message.
-crypt
  Use the crypt algorithm (default).
-1
  Use the MD5 based BSD password algorithm 1.
-apr1
  Use the apr1 algorithm (Apache variant of the BSD algorithm).
-aixmd5
  Use the AIX MD5 algorithm (AIX variant of the BSD algorithm).
-5
-6
  Use the SHA256 / SHA512 based algorithms defined by Ulrich Drepper. See <https://www.akkadia.org/drepper/SHA-crypt.txt>.
-salt string
  Use the specified salt. When reading a password from the terminal, this implies -noverify.
-in file
  Read passwords from file.
-stdin
  Read passwords from stdin.
-noverify
  Don't verify when reading a password from the terminal.
-quiet
  Don't output warnings when passwords given at the command line are truncated.
-table
  In the output list, prepend the cleartext password and a TAB character to each password hash.
-rand file...
  A file or files containing random data used to seed the random number generator. Multiple files can be specified separated by an OS-dependent character. The separator is ; for MS-Windows, , for OpenVMS, and : for all others.
[-writerand file]
  Writes random data to the specified file upon exit. This can be used with a subsequent -rand flag.

# EXAMPLES

      % openssl passwd -crypt -salt xx password
      xxj31ZMTZzkVA

      % openssl passwd -1 -salt xxxxxxxx password
      $1$xxxxxxxx$UYCIxa628.9qXjpQCjM4a.

      % openssl passwd -apr1 -salt xxxxxxxx password
      $apr1$xxxxxxxx$dxHfLAsjHkDRmG83UXe8K0

      % openssl passwd -aixmd5 -salt xxxxxxxx password
      xxxxxxxx$8Oaipk/GPKhC64w/YVeFD/

# COPYRIGHT

Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.

2018-09-23 | 1.1.1i