DES - Part 2 - The S-Boxes of the Data Encryption Standard

In this video we look at the definitions of the eight S-Boxes of the Data Encryption Standard (DES). We implement these functions in Python using the definitions given in the specification of DES. We then implement these functions using direct look up lists which avoids the calculation of the index. Code for video: https://github.com/jacksoninfosec/data-encryption-standard