Provide non blocking randomness
This document describes Crypt::URandom version 0.34
use Crypt::URandom();
my $random_string_50_bytes_long = Crypt::URandom::urandom(50);
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use Crypt::URandom qw( urandom );
my $random_string_50_bytes_long = urandom(50);
This Module is intended to provide an interface to the strongest available source of non-blocking randomness on the current platform. Platforms currently supported are anything supporting /dev/urandom and versions of Windows greater than or equal to Windows 2000.
This function accepts an integer and returns a string of the same size filled with random data. The first call will initialize the native cryptographic libraries (if necessary) and load all the required Perl libraries
The module cannot run on versions of Windows earlier than Windows 2000 as there is no cryptographic functions provided by the operating system. The module was unable to load the CryptAcquireContextA function from the advapi32 dynamic library. The advapi32 library cannot probably be loaded. The module was unable to call the CryptAcquireContextA function from the advapi32 dynamic library. The module was unable to load the CryptGenRandom function from the advapi32 dynamic library. The module was unable to load the SystemFunction036 function from the advapi32 dynamic library. The get method must be called with an integer argument to describe how many random bytes are required. The Windows 2000 CryptGenRandom method call failed to generate the required amount of randomness The post Windows 2000 RtlGenRand method call failed to generate the required amount of randomness The /dev/urandom device did not return the desired amount of random bytes The /dev/urandom device returned an error when being read from The /dev/urandom device returned an error when being opened
Crypt::URandom requires no configuration files or environment variables.
If the platform is Win32, the Win32::API module will be required. Otherwise no other modules other than those provided by perl will be required
None reported.
No bugs have been reported.
Please report any bugs or feature requests to \*(C`[email protected]\*(C', or through the web interface at <http://rt.cpan.org>.
David Dick \*(C`<[email protected]>\*(C'
The Win32::API code for interacting with Microsoft's CryptoAPI was stolen with extreme gratitude from Crypt::Random::Source::Strong::Win32 by Max Kanat-Alexander
Copyright (c) 2011, David Dick \*(C`<[email protected]>\*(C'. All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
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