_openssl_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.
        """
        key = _helpers._to_bytes(key)
        parsed_pem_key = _helpers._parse_pem_key(key)
        if parsed_pem_key:
            pkey = crypto.load_privatekey(crypto.FILETYPE_PEM, parsed_pem_key)
        else:
            password = _helpers._to_bytes(password, encoding='utf-8')
            pkey = crypto.load_pkcs12(key, password).get_privatekey()
        return OpenSSLSigner(pkey)