docs: def create_key_pair(self, cert_type, bits):
          """
          Create a public/private key pair.
  
          Arguments: type - Key type, must be one of TYPE_RSA and TYPE_DSA
                     bits - Number of bits to use in the key
          Returns:   The public/private key pair in a PKey object
          """
  
          pkey = crypto.PKey()
          pkey.generate_key(cert_type, bits)
          return pkey