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math::random::isaac::pp(3pm) [debian man page]

Math::Random::ISAAC::PP(3pm)				User Contributed Perl Documentation			      Math::Random::ISAAC::PP(3pm)

NAME

       Math::Random::ISAAC::PP - Pure Perl port of the ISAAC PRNG algorithm

VERSION

       version 1.003

SYNOPSIS

       This module implements the same interface as "Math::Random::ISAAC" and can be used as a drop-in replacement. However, it is recommended
       that you let the "Math::Random::ISAAC" module decide whether to use the PurePerl or XS version of this module, instead of choosing
       manually.

       Selecting the backend to use manually really only has two uses:

       o   If you are trying to avoid the small overhead incurred with dispatching method calls to the appropriate backend modules.

       o   If you are testing the module for performance and wish to explicitly decide which module you would like to use.

       Example code:

	 # With Math::Random::ISAAC
	 my $rng = Math::Random::ISAAC->new(time);
	 my $rand = $rng->rand();

	 # With Math::Random::ISAAC::PP
	 my $rng = Math::Random::ISAAC::PP->new(time);
	 my $rand = $rng->rand();

DESCRIPTION

       See Math::Random::ISAAC for the full description.

METHODS

   new
	 Math::Random::ISAAC::PP->new( @seeds )

       Implements the interface as specified in "Math::Random::ISAAC"

   rand
	 $rng->rand()

       Implements the interface as specified in "Math::Random::ISAAC"

   irand
	 $rng->irand()

       Implements the interface as specified in "Math::Random::ISAAC"

SEE ALSO

       Math::Random::ISAAC

BUGS

       Please report any bugs or feature requests on the bugtracker website http://rt.cpan.org/NoAuth/Bugs.html?Dist=Math-Random-ISAAC

       When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired
       feature.

AUTHOR

       Jonathan Yu <jawnsy@cpan.org>

COPYRIGHT AND LICENSE

       Legally speaking, this package and its contents are:

	 Copyright (c) 2011 by Jonathan Yu <jawnsy@cpan.org>.

       But this is really just a legal technicality that allows the author to offer this package under the public domain and also a variety of
       licensing options. For all intents and purposes, this is public domain software, which means you can do whatever you want with it.

       The software is provided "AS IS", without warranty of any kind, express or implied, including but not limited to the warranties of
       merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any
       claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the
       software or the use or other dealings in the software.

perl v5.10.1							    2011-02-13					      Math::Random::ISAAC::PP(3pm)

Check Out this Related Man Page

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

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 v5.14.2							    2007-05-20							       Random(3pm)
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