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passwd

NAME

openssl-passwd, passwd - compute password hashes

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.

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 2000-2021 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.