NAME

PRSG - Perl interface to pseudo random sequence generator function.

SYNOPSIS

use Math::PRSG;

DESCRIPTION

This perl extension implements a (159, 31, 0) LFSR, giving a period of 160 bits. This can then be used as a RNG if seeded well (ie. with 160 bits of entropy) and if the output is fed through a message digest function (in order to prevent any prediction).

FUNCTIONS

new

my $prsg = new PRSG $seed;

Create a new PRSG object. A 160 bit (20-byte) $seed must be provided, which is used to seed the LFSR.

seed

$prsg->seed($rnd);

Seed the LFSR with $rnd.

clock

$value = $prsg->clock();

Clock the LFSR, returning the new register value as a 20-byte string.

COPYRIGHT

Systemics Ltd ( http://www.systemics.com/ )