code: def db_validate_yubikey_otp(self, public_id, otp):
          
          return pyhsm.db_cmd.YHSM_Cmd_DB_Validate_OTP( \
              self.stick, public_id, otp).execute()
docs: Request the YubiHSM to validate an OTP for a YubiKey stored
          in the internal database.
  
          @param public_id: The six bytes public id of the YubiKey
          @param otp: The OTP from a YubiKey in binary form (16 bytes)
          @type public_id: string
          @type otp: string
  
          @returns: validation response
          @rtype: L{YHSM_ValidationResult}
  
          @see: L{pyhsm.db_cmd.YHSM_Cmd_DB_Validate_OTP}