5 openssl-passwd - compute password hashes
24 [B<-writerand> I<file>]
27 =for comment ifdef crypt
31 The B<passwd> command computes the hash of a password typed at
32 run-time or the hash of each password in a list. The password list is
33 taken from the named file for option B<-in>, from stdin for
34 option B<-stdin>, or from the command line, or from the terminal otherwise.
35 The Unix standard algorithm B<crypt> and the MD5-based BSD password
36 algorithm B<1>, its Apache variant B<apr1>, and its AIX variant are available.
44 Print out a usage message.
48 Use the B<crypt> algorithm (default).
52 Use the MD5 based BSD password algorithm B<1>.
56 Use the B<apr1> algorithm (Apache variant of the BSD algorithm).
60 Use the B<AIX MD5> algorithm (AIX variant of the BSD algorithm).
66 Use the B<SHA256> / B<SHA512> based algorithms defined by Ulrich Drepper.
67 See L<https://www.akkadia.org/drepper/SHA-crypt.txt>.
69 =item B<-salt> I<string>
71 Use the specified salt.
72 When reading a password from the terminal, this implies B<-noverify>.
76 Read passwords from I<file>.
80 Read passwords from B<stdin>.
84 Don't verify when reading a password from the terminal.
88 Don't output warnings when passwords given at the command line are truncated.
92 In the output list, prepend the cleartext password and a TAB character
93 to each password hash.
95 =item B<-rand> I<files>
97 The files containing random data used to seed the random number generator.
98 Multiple files can be specified separated by an OS-dependent character.
99 The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
102 =item B<-writerand> I<file>
104 Writes random data to the specified I<file> upon exit.
105 This can be used with a subsequent B<-rand> flag.
111 % openssl passwd -crypt -salt xx password
114 % openssl passwd -1 -salt xxxxxxxx password
115 $1$xxxxxxxx$UYCIxa628.9qXjpQCjM4a.
117 % openssl passwd -apr1 -salt xxxxxxxx password
118 $apr1$xxxxxxxx$dxHfLAsjHkDRmG83UXe8K0
120 % openssl passwd -aixmd5 -salt xxxxxxxx password
121 xxxxxxxx$8Oaipk/GPKhC64w/YVeFD/
125 Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
127 Licensed under the Apache License 2.0 (the "License"). You may not use
128 this file except in compliance with the License. You can obtain a copy
129 in the file LICENSE in the source distribution or at
130 L<https://www.openssl.org/source/license.html>.