crypt.py 文件源码

def from_string(key, password=b'notasecret'):
      """Construct a Signer instance from a string.

      Args:
        key: string, private key in PKCS12 or PEM format.
        password: string, password for the private key file.

      Returns:
        Signer instance.

      Raises:
        OpenSSL.crypto.Error if the key can't be parsed.
      """
      from OpenSSL import crypto
      parsed_pem_key = _parse_pem_key(key)
      if parsed_pem_key:
        pkey = crypto.load_privatekey(crypto.FILETYPE_PEM, parsed_pem_key)
      else:
        if isinstance(password, six.text_type):
          password = password.encode('utf-8')
        pkey = crypto.load_pkcs12(key, password).get_privatekey()
      return OpenSSLSigner(pkey)