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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 prints xxj31ZMTZzkVA.
openssl passwd -1 -salt xxxxxxxx password prints $1$xxxxxxxx$UYCIxa628.9qXjpQCjM4a..
openssl passwd -apr1 -salt xxxxxxxx password prints $apr1$xxxxxxxx$dxHfLAsjHkDRmG83UXe8K0.
openssl passwd -aixmd5 -salt xxxxxxxx password prints xxxxxxxx$8Oaipk/GPKhC64w/YVeFD/.
COPYRIGHT¶
Copyright 2000-2016 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>.
2018-07-04 | 1.1.1-pre8 |