NAME¶
openssl-rand, rand - generate pseudo-random bytes
SYNOPSIS¶
openssl rand [-help] [-out file] [-rand
file(s)] [-base64] [-hex] num
DESCRIPTION¶
The rand command outputs num pseudo-random bytes after seeding the
random number generator once. As in other openssl command line tools,
PRNG seeding uses the file $HOME/.rnd or
.rnd in addition to the files given in the -rand option. A new
$HOME/.rnd or .rnd file will be written
back if enough seeding was obtained from these sources.
OPTIONS¶
- -help
- Print out a usage message.
- -out file
- Write to file instead of standard output.
- -rand file(s)
- Use specified file or files or EGD socket (see RAND_egd(3)) for
seeding 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.
- -base64
- Perform base64 encoding on the output.
- -hex
- Show the output as a hex string.
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>.