01-07-2008
Quote:
Originally Posted by
porter
"OpenSSH" != "OpenSSL".
They both use a random number generator device. So what Neo posted is relevant to both. PRNG Not Seeded errors indicate problems with randomness, a simple Google/Yahoo search will unearth mountains of tales for that error message. (if the FAQ is a little hard to chew, of course)
Take care,
grebbux.
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LEARN ABOUT OSX
crypt::openssl::random
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 v5.16.2 2007-05-20 Random(3)