Crypt::OpenSSL::RSA is an XS perl module designed to provide basic RSA
functionality.  It does this by providing a glue to the RSA functions
in the OpenSSL library.  In particular, it provides the following functions:

      new_public_key, new_private_key - create a key from a string
      generate_key - make a new key
      get_private_key_string - save key to a string
      get_public_key_string - save public portion of key to a string
      get_public_key_x509_string - save public portion of key to a string,
                                   using format compatibe with OpenSSL's
                                   command-line rsa tool
      encrypt, decrypt, private_encrypt, public_decrypt, sign, verify,
      use_pkcs1_oaep_padding, use_pkcs1_padding,
      use_sslv23_padding, use_no_padding
      use_md5_hash, use_sha1_hash, use_ripemd160_hash
      size - Returns the size, in bytes, of the key.
      check_key - checks the validity of a key.

Bugs:
 There is no Crypt::CBC support.

Copyright (c) 2001-2005 Ian Robertson.  Crypt::OpenSSL::RSA is free
software; you may redistribute it and/or modify it under the same
terms as Perl itself.