A shell script or software for generating random passwords Post: 302402111

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openssl-passwd

PASSWD(1SSL)							      OpenSSL							      PASSWD(1SSL)

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.  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>.

1.1.1a								    2018-12-18							      PASSWD(1SSL)