2000-03-01 15:57:25 +08:00
|
|
|
=pod
|
|
|
|
|
|
|
|
|
|
=head1 NAME
|
|
|
|
|
|
|
|
|
|
rand - generate pseudo-random bytes
|
|
|
|
|
|
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
|
|
|
|
|
|
B<openssl rand>
|
2016-02-06 00:58:45 +08:00
|
|
|
[B<-help>]
|
2000-03-01 15:57:25 +08:00
|
|
|
[B<-out> I<file>]
|
2000-03-04 06:18:19 +08:00
|
|
|
[B<-rand> I<file(s)>]
|
2000-03-01 15:57:25 +08:00
|
|
|
[B<-base64>]
|
2009-02-02 08:01:28 +08:00
|
|
|
[B<-hex>]
|
2000-03-01 15:57:25 +08:00
|
|
|
I<num>
|
|
|
|
|
|
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
|
|
|
|
|
|
The B<rand> command outputs I<num> pseudo-random bytes after seeding
|
2001-09-07 14:13:40 +08:00
|
|
|
the random number generator once. As in other B<openssl> command
|
2000-03-01 15:57:25 +08:00
|
|
|
line tools, PRNG seeding uses the file I<$HOME/>B<.rnd> or B<.rnd>
|
|
|
|
|
in addition to the files given in the B<-rand> option. A new
|
|
|
|
|
I<$HOME>/B<.rnd> or B<.rnd> file will be written back if enough
|
|
|
|
|
seeding was obtained from these sources.
|
|
|
|
|
|
|
|
|
|
=head1 OPTIONS
|
|
|
|
|
|
|
|
|
|
=over 4
|
|
|
|
|
|
2016-02-06 00:58:45 +08:00
|
|
|
=item B<-help>
|
|
|
|
|
|
|
|
|
|
Print out a usage message.
|
|
|
|
|
|
2000-03-01 15:57:25 +08:00
|
|
|
=item B<-out> I<file>
|
|
|
|
|
|
|
|
|
|
Write to I<file> instead of standard output.
|
|
|
|
|
|
|
|
|
|
=item B<-rand> I<file(s)>
|
|
|
|
|
|
2015-08-18 03:21:33 +08:00
|
|
|
Use specified file or files or EGD socket (see L<RAND_egd(3)>)
|
2000-03-01 15:57:25 +08:00
|
|
|
for seeding the random number generator.
|
2016-03-20 00:28:58 +08:00
|
|
|
Multiple files can be specified separated by an OS-dependent character.
|
2000-04-13 00:48:20 +08:00
|
|
|
The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
|
2000-03-01 15:57:25 +08:00
|
|
|
all others.
|
|
|
|
|
|
|
|
|
|
=item B<-base64>
|
|
|
|
|
|
|
|
|
|
Perform base64 encoding on the output.
|
|
|
|
|
|
2009-02-02 08:01:28 +08:00
|
|
|
=item B<-hex>
|
|
|
|
|
|
|
|
|
|
Show the output as a hex string.
|
|
|
|
|
|
2000-03-01 15:57:25 +08:00
|
|
|
=back
|
|
|
|
|
|
2000-03-01 19:45:53 +08:00
|
|
|
=head1 SEE ALSO
|
|
|
|
|
|
2015-08-18 03:21:33 +08:00
|
|
|
L<RAND_bytes(3)>
|
2000-03-01 19:45:53 +08:00
|
|
|
|
2016-05-18 23:44:05 +08:00
|
|
|
=head1 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
|
|
|
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
|
|
|
|
|
|
=cut
|
