crypto.py 文件源码

def serialize_public_key(public_key):
    """
    Serializes the provided public key object as base-64-encoded DER format
    using X.509 SubjectPublicKeyInfo with PKCS1.

    :param public_key: the public key object
    :type public_key: :class:`~rsa.RSAPublicKey`
    :return: the key as base64 encoded unicode string
    :rtype: str
    """
    der = public_key.public_bytes(
        encoding=serialization.Encoding.DER,
        format=serialization.PublicFormat.SubjectPublicKeyInfo)
    return base64.b64encode(der).decode(encoding='utf-8')