1RAND(1)                             OpenSSL                            RAND(1)
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NAME

6       openssl-rand, rand - generate pseudo-random bytes
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SYNOPSIS

9       openssl rand [-help] [-out file] [-rand file...]  [-writerand file]
10       [-base64] [-hex] num
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DESCRIPTION

13       The rand command outputs num pseudo-random bytes after seeding the
14       random number generator once.  As in other openssl command line tools,
15       PRNG seeding uses the file $HOME/.rnd or .rnd in addition to the files
16       given in the -rand option.  A new $HOME/.rnd or .rnd file will be
17       written back if enough seeding was obtained from these sources.
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OPTIONS

20       -help
21           Print out a usage message.
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23       -out file
24           Write to file instead of standard output.
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26       -rand file...
27           A file or files containing random data used to seed the random
28           number generator.  Multiple files can be specified separated by an
29           OS-dependent character.  The separator is ; for MS-Windows, , for
30           OpenVMS, and : for all others.
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32       [-writerand file]
33           Writes random data to the specified file upon exit.  This can be
34           used with a subsequent -rand flag.
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36       -base64
37           Perform base64 encoding on the output.
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39       -hex
40           Show the output as a hex string.
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SEE ALSO

43       RAND_bytes(3)
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46       Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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48       Licensed under the OpenSSL license (the "License").  You may not use
49       this file except in compliance with the License.  You can obtain a copy
50       in the file LICENSE in the source distribution or at
51       <https://www.openssl.org/source/license.html>.
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551.1.1d                            2019-10-03                           RAND(1)
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