Implementation of the spook cipher in Python, intended for analysis purposes.
CAUTION This implementation is NOT FITTED for use with real-life data: it is sensitive to timing side-channel attacks and is extremely inefficient.
The spook_encrypt and spook_decrypt functions take as input bytes objects. The variant is selected according to the global constant SMALL_PERM and to the length of the input k (16 bytes for su and 32 bytes for mu).
This software distributed under the terms of the MIT license. See LICENSE for details.
v1.0Initial versionv2.0Remove thepparameter from the API to match the NIST API.