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.\" ========================================================================
.\"
.IX Title "RAND 1"
.TH RAND 1 "2019-09-10" "1.1.1d" "OpenSSL"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
openssl\-rand, rand \- generate pseudo\-random bytes
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBopenssl rand\fR
[\fB\-help\fR]
[\fB\-out\fR \fIfile\fR]
[\fB\-rand file...\fR]
[\fB\-writerand file\fR]
[\fB\-base64\fR]
[\fB\-hex\fR]
\&\fInum\fR
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fBrand\fR command outputs \fInum\fR pseudo-random bytes after seeding
the random number generator once. As in other \fBopenssl\fR command
line tools, \s-1PRNG\s0 seeding uses the file \fI\f(CI$HOME\fI/\fR\fB.rnd\fR or \fB.rnd\fR
in addition to the files given in the \fB\-rand\fR option. A new
\&\fI\f(CI$HOME\fI\fR/\fB.rnd\fR or \fB.rnd\fR file will be written back if enough
seeding was obtained from these sources.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-help\fR" 4
.IX Item "-help"
Print out a usage message.
.IP "\fB\-out file\fR" 4
.IX Item "-out file"
Write to \fIfile\fR instead of standard output.
.IP "\fB\-rand file...\fR" 4
.IX Item "-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 \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
all others.
.IP "[\fB\-writerand file\fR]" 4
.IX Item "[-writerand file]"
Writes random data to the specified \fIfile\fR upon exit.
This can be used with a subsequent \fB\-rand\fR flag.
.IP "\fB\-base64\fR" 4
.IX Item "-base64"
Perform base64 encoding on the output.
.IP "\fB\-hex\fR" 4
.IX Item "-hex"
Show the output as a hex string.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBRAND_bytes\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2000\-2016 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.
