1=pod 2 3=head1 NAME 4 5openssl-rand, 6rand - generate pseudo-random bytes 7 8=head1 SYNOPSIS 9 10B<openssl rand> 11[B<-out> I<file>] 12[B<-rand> I<file(s)>] 13[B<-base64>] 14[B<-hex>] 15I<num> 16 17=head1 DESCRIPTION 18 19The B<rand> command outputs I<num> pseudo-random bytes after seeding 20the random number generator once. As in other B<openssl> command 21line tools, PRNG seeding uses the file I<$HOME/>B<.rnd> or B<.rnd> 22in addition to the files given in the B<-rand> option. A new 23I<$HOME>/B<.rnd> or B<.rnd> file will be written back if enough 24seeding was obtained from these sources. 25 26=head1 OPTIONS 27 28=over 4 29 30=item B<-out> I<file> 31 32Write to I<file> instead of standard output. 33 34=item B<-rand> I<file(s)> 35 36Use specified file or files or EGD socket (see L<RAND_egd(3)|RAND_egd(3)>) 37for seeding the random number generator. 38Multiple files can be specified separated by a OS-dependent character. 39The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for 40all others. 41 42=item B<-base64> 43 44Perform base64 encoding on the output. 45 46=item B<-hex> 47 48Show the output as a hex string. 49 50=back 51 52=head1 SEE ALSO 53 54L<RAND_bytes(3)|RAND_bytes(3)> 55 56=cut 57