יובל קוג'מן (Yuval Kogman) > Crypt-Random-Source-Weak-openssl > Crypt::Random::Source::Weak::openssl

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Crypt-Random-Source-Weak-openssl-0.02.tar.gz

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Module Version: 0.02   Source  

NAME ^

Crypt::Random::Source::Weak::openssl - Get random bytes from the OpenSSL command line utility

SYNOPSIS ^

        use Crypt::Random::Source::Strong::openssl;

        my $source = Crypt::Random::Source::Weak::openssl->new

        my $bytes = $source->get(1024); # get 1kb of random bytes

DESCRIPTION ^

This is a weak random byte source because openssl rand is a PRNG.

This is a subclass of Crypt::Random::Source::Base::Proc.

Due to the retarded nature of the rand command line utility's interface, it must repeatedly be invoked with default_chunk_size as number of random bytes to generate.

ATTRIBUTES ^

default_chunk_size

The default number of bytes to generate per openssl rand invocation.

Defaults to 64 kb, which is pretty large and balances well with the startup time of openssl rand for miniscule chunks.

If you will be needing a lot of random data, increasing this number to something much larger would probably be beneficial.

openssl

The openssl executable to invoke. Defaults to what File::Which found for openssl (which means it must be in your PATH).

SEE ALSO ^

Crypt::Random::Source

openssl(1), rand(1)

VERSION CONTROL ^

This module is maintained using Darcs. You can get the latest version from http://nothingmuch.woobling.org/code, and use darcs send to commit changes.

AUTHOR ^

Yuval Kogman <nothingmuch@woobling.org>

COPYRIGHT ^

        Copyright (c) 2008 Yuval Kogman. All rights reserved
        This program is free software; you can redistribute
        it and/or modify it under the same terms as Perl itself.
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