PASSWD - Online Linux Manual Page

Section : 1
Updated : 2021-03-26
Source : 1.1.1k
Note : OpenSSL
NAMEopenssl−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}
DESCRIPTIONThe 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/
COPYRIGHTCopyright 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>. 0
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