api.py 文件源码

def ecies_reencrypt(
        rekey: Union[bytes, umbral.RekeyFrag],
        enc_key: Union[bytes, umbral.EncryptedKey],
) -> umbral.EncryptedKey:
    """
    Re-encrypts the key provided.

    :param rekey: Re-encryption key to use
    :param enc_key: Encrypted key to re-encrypt

    :return: The re-encrypted key
    """
    if type(rekey) == bytes:
        rekey = umbral.RekeyFrag(None, priv_bytes2ec(rekey))
    if type(enc_key) == bytes:
        enc_key = umbral.EncryptedKey(priv_bytes2ec(enc_key), None)
    reencrypted_data = PRE.reencrypt(rekey, enc_key)
    return CFrag(reencrypted_data=reencrypted_data)