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//opt/alt/openssl/share/man/man1/openssl-rand.1

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.\" ========================================================================
.\"
.IX Title "RAND 1"
.TH RAND 1 "2019-12-20" "1.0.2u" "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\-out\fR \fIfile\fR]
[\fB\-rand\fR \fIfile(s)\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\-out\fR \fIfile\fR" 4
.IX Item "-out file"
Write to \fIfile\fR instead of standard output.
.IP "\fB\-rand\fR \fIfile(s)\fR" 4
.IX Item "-rand file(s)"
Use specified file or files or \s-1EGD\s0 socket (see \fIRAND_egd\fR\|(3))
for seeding the random number generator.
Multiple files can be specified separated by a OS-dependent character.
The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
all others.
.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"
\&\fIRAND_bytes\fR\|(3)