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Initially, the manual page entry for the 'openssl cmd' command used to be available at 'cmd(1)'. Later, the aliases 'openssl-cmd(1)' was introduced, which made it easier to group the openssl commands using the 'apropos(1)' command or the shell's tab completion. In order to reduce cluttering of the global manual page namespace, the manual page entries without the 'openssl-' prefix have been deprecated in OpenSSL 3.0 and will be removed in OpenSSL 4.0. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/9666)
77 lines
1.6 KiB
Plaintext
77 lines
1.6 KiB
Plaintext
=pod
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=head1 NAME
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openssl-rand - generate pseudo-random bytes
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=head1 SYNOPSIS
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B<openssl rand>
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[B<-help>]
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[B<-out> I<file>]
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[B<-rand file...>]
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[B<-writerand file>]
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[B<-base64>]
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[B<-hex>]
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I<num>
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=head1 DESCRIPTION
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The B<rand> command outputs I<num> pseudo-random bytes after seeding
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the random number generator once. As in other B<openssl> command
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line tools, PRNG seeding uses the file I<$HOME/>B<.rnd> or B<.rnd>
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in addition to the files given in the B<-rand> option. A new
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I<$HOME>/B<.rnd> or B<.rnd> file will be written back if enough
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seeding was obtained from these sources.
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=head1 OPTIONS
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=over 4
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=item B<-help>
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Print out a usage message.
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=item B<-out file>
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Write to I<file> instead of standard output.
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=item B<-rand file...>
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A file or files containing random data used to seed the random number
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generator.
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Multiple files can be specified separated by an OS-dependent character.
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The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
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all others.
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=item [B<-writerand file>]
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Writes random data to the specified I<file> upon exit.
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This can be used with a subsequent B<-rand> flag.
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=item B<-base64>
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Perform base64 encoding on the output.
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=item B<-hex>
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Show the output as a hex string.
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=back
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=head1 SEE ALSO
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L<openssl(1)>,
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L<RAND_bytes(3)>
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=head1 COPYRIGHT
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Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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