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crypt::random::source::factory(3pm) [debian man page]

Crypt::Random::Source::Factory(3pm)			User Contributed Perl Documentation		       Crypt::Random::Source::Factory(3pm)

NAME
Crypt::Random::Source::Factory - Load and instantiate sources of random data SYNOPSIS
use Crypt::Random::Source::Factory; my $f = Crypt::Random::Source::Factory->new; my $strong = $f->get_strong; my $weak = $f->get_weak; my $any = $f->get; DESCRIPTION
This class implements a loading and instantiation factory for Crypt::Random::Source objects. If $ENV{CRYPT_RANDOM_NOT_PLUGGABLE} is set then only a preset list of sources will be tried. Otherwise Module::Find will be used to locate any installed sources, and use the first available one. METHODS
get %args Instantiate any random source, passing %args to the constructor. The "type" argument can be "weak", "strong" or "any". get_weak %args get_strong %args Instantiate a new weak or strong random source. AUTHOR
Yuval Kogman <nothingmuch@woobling.org> COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Yuval Kogman. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.14.2 2011-01-05 Crypt::Random::Source::Factory(3pm)

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Random(3)						User Contributed Perl Documentation						 Random(3)

NAME
Crypt::OpenSSL::RSA - RSA encoding and decoding, using the openSSL libraries Crypt::OpenSSL::Random - Routines for accessing the OpenSSL pseudo-random number generator SYNOPSIS
use Crypt::OpenSSL::Random; Crypt::OpenSSL::Random::random_seed($good_random_data); Crypt::OpenSSL::Random::random_egd("/tmp/entropy"); Crypt::OpenSSL::Random::random_status() or die "Unable to sufficiently seed the random number generator". my $ten_good_random_bytes = Crypt::OpenSSL::Random::random_bytes(10); my $ten_ok_random_bytes = Crypt::OpenSSL::Random::random_pseudo_bytes(10); DESCRIPTION
Crypt::OpenSSL::Random provides the ability to seed and query the OpenSSL library's pseudo-random number generator EXPORT None by default. Static Methods random_bytes This function, returns a specified number of cryptographically strong pseudo-random bytes from the PRNG. If the PRNG has not been seeded with enough randomness to ensure an unpredictable byte sequence, then a false value is returned. random_pseudo_bytes This function, is similar to c<random_bytes>, but the resulting sequence of bytes are not necessarily unpredictable. They can be used for non-cryptographic purposes and for certain purposes in cryptographic protocols, but usually not for key generation etc. random_seed This function seeds the PRNG with a supplied string of bytes. It returns true if the PRNG has sufficient seeding. Note: calling this function with non-random bytes is of limited value at best! random_egd This function seeds the PRNG with data from the specified entropy gathering daemon. Returns the number of bytes read from the daemon on succes, or -1 if not enough bytes were read, or if the connection to the daemon failed. random_status This function returns true if the PRNG has sufficient seeding. BUGS
Because of the internal workings of OpenSSL's random library, the pseudo-random number generator (PRNG) accessed by Crypt::OpenSSL::Random will be different than the one accessed by any other perl module. Hence, to use a module such as Crypt::OpenSSL::Random, you will need to seed the PRNG used there from one used here. This class is still advantageous, however, as it centralizes other methods, such as random_egd, in one place. AUTHOR
Ian Robertson, iroberts@cpan.com SEE ALSO
perl(1), rand(3), RAND_add(3), RAND_egd(3), RAND_bytes(3). POD ERRORS
Hey! The above document had some coding errors, which are explained below: Around line 62: '=item' outside of any '=over' Around line 93: You forgot a '=back' before '=head1' perl v5.16.3 2007-05-20 Random(3)
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