35ed393e5e
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org>
60 lines
1.1 KiB
Text
60 lines
1.1 KiB
Text
=pod
|
|
|
|
=head1 NAME
|
|
|
|
rand - generate pseudo-random bytes
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
B<openssl rand>
|
|
[B<-help>]
|
|
[B<-out> I<file>]
|
|
[B<-rand> I<file(s)>]
|
|
[B<-base64>]
|
|
[B<-hex>]
|
|
I<num>
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
The B<rand> command outputs I<num> pseudo-random bytes after seeding
|
|
the random number generator once. As in other B<openssl> command
|
|
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
|
|
|
|
=item B<-help>
|
|
|
|
Print out a usage message.
|
|
|
|
=item B<-out> I<file>
|
|
|
|
Write to I<file> instead of standard output.
|
|
|
|
=item B<-rand> I<file(s)>
|
|
|
|
Use specified file or files or EGD socket (see L<RAND_egd(3)>)
|
|
for seeding the random number generator.
|
|
Multiple files can be specified separated by an OS-dependent character.
|
|
The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
|
|
all others.
|
|
|
|
=item B<-base64>
|
|
|
|
Perform base64 encoding on the output.
|
|
|
|
=item B<-hex>
|
|
|
|
Show the output as a hex string.
|
|
|
|
=back
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<RAND_bytes(3)>
|
|
|
|
=cut
|