Internal Program Version: Crypt::OpenSSL::Bignum  0.09.5.42.0

Crypt::OpeSSL::Bignum provides access to OpenSSL multiprecision 
integer arithmetic libraries. Presently, many though not all of
the arithmetic operations that OpenSSL provides are exposed to 
perl. In addition, this module can be used to provide access to 
bignum values produced by other OpenSSL modules, such as key 
parameters from Crypt::OpenSSL::RSA.

http://search.cpan.org/dist/Crypt-OpenSSL-Bignum