crypt.py 文件源码

def sign(self, message):
      """Signs a message.

      Args:
        message: bytes, Message to be signed.

      Returns:
        string, The signature of the message for the given key.
      """
      from OpenSSL import crypto
      if isinstance(message, six.text_type):
        message = message.encode('utf-8')
      return crypto.sign(self._key, message, 'sha256')