Horst Feistel, The Feistel Cipher and a bit of Rust

Some may think that the roots of Cybersecurity go back to the discovery of the first computer worm in the 1980s, or into the late 1970s with the discovery of public-key encryption and the Diffie-Hellman method. But, we can trace it back into the early 1970s, and with the work of Horst Feistel. The roots of his work at IBM can be traced back to the creation of the Feistel cipher and which implements a…