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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 AT 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)