- text (str): The input text to encode or decode. - shift (int): The number of positions to shift letters by. - mode (str): Determines whether to "encode" (shift forward) or "decode" (shift backward).

The goal of this list is to provide educational reading material for different levels of cryptographic knowledge. I started it because my day job onboarding engineers at Cossack Labs includes ...

Abstract: Due to the increasing threats from possible large-scale quantum computers, post-quantum cryptography (PQC) has drawn significant attention from various communities recently. In particular, ...