This module 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:

loadPublicKey, loadPrivateKey - load a key from a string
getPublicKeyString, getPrivateKeyString - save a key to a string
generateKey - make a new key
encrypt, decrypt, sign, verify,
use_pkcs1_oaep_padding, use_pkcs1_padding,
use_sslv23_padding, use_no_padding,
use_md5_hash, use_sha1_hash, use_ripemd60_hash
size - returns the size, in bytes, of the key
checkKey - checks the validity of the key
