Crypt::SysRandom(3) User Contributed Perl Documentation Crypt::SysRandom(3)

Crypt::SysRandom - Perl interface to system randomness

version 0.007

use Crypt::SysRandom 'random_bytes';
my $random = random_bytes(16);

This module uses whatever interface is available to procure cryptographically random data from the system.

This will fetch a string of $count random bytes containing cryptographically secure random date.

The current backends are tried in order:

  • Crypt::SysRandom::XS
  • "RtlGenRandom" using Win32::API
  • "/dev/urandom"

Leon Timmermans <fawaka@gmail.com>

This software is copyright (c) 2025 by Leon Timmermans.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

2026-08-16 perl v5.42.2