crypt::makerand(3) [centos man page]

Makerand(3)						User Contributed Perl Documentation					       Makerand(3)

NAME

       Crypt::Makerand - Perl extension for the truerand library

SYNOPSIS

	 use Crypt::Makerand;
	 $rand = Crypt::Makerand::trand32();

DESCRIPTION

       Uses the truerand library to generate a random 32 bit number.

       The basic idea here is that between clock "skew" and various hard-to-predict OS event arrivals, counting a tight loop will yield a little
       (maybe a third of a bit or so) of "good" randomness per interval clock tick.  This seems to work well even on unloaded machines.  If there
       is a human operator at the machine, you should augment truerand with other measure, like keyboard event timing.

       On server machines (e.g., when you need to generate a Diffie-Hellman secret) truerand alone may be good enough.

   Exportable functions
	 unsigned long trand32(void)

AUTHOR

       The truerand library was developed by Matt Blaze, Jim Reeds, and Jack Lacy. Copyright (c) 1992, 1994 AT&T.  This Perl extension was created
       by Mark Cox, mjc@redhat.com, March 2001.

SEE ALSO

       perl(1).

perl v5.16.3							    2014-06-09							       Makerand(3)

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

NAME

       Crypt::Random::Source::Base - Abstract base class for Crypt::Random::Source classes

SYNOPSIS

	   use Moose;
	   extends qw(Crypt::Random::Source::Base);

DESCRIPTION

       This is an abstract base class.

       In the future it will be a role.

METHODS

   get $n, %args
       Gets $n random bytes and returns them as a string.

       This method may produce fatal errors if the source was unable to provide enough data.

   read $buf, $n, [ $off ]
       This method is cannibalized from IO::Scalar. It provides an IO::Handle work-alike.

       Note that subclasses override this to operate on a real handle directly if available.

   seed @stuff
       On supporting sources this method will add @stuff, whatever it may be, to the random seed.

       Some sources may not support this, so be careful.

   available
       This is a class method, such that when it returns true calling "new" without arguments on the class should provide a working source of
       random data.

       This is use by Crypt::Random::Source::Factory.

   rank
       This is a class method, with some futz value for a ranking, to help known good sources be tried before known bad (slower, less available)
       sources.

   get_data %Params
       Provided for compatibility with Crypt::Random

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::Base(3pm)