Cryptographer Horst Feistel ’37 spearheaded the work leading to encryption standards used during the 20th century. On March 17, 1975, the National Bureau of Standards (NBS) published its proposed Data ...

Cryptography ain’t easy. Seemingly small details like how many times a computationally intensive loop runs can give the game away. [Lord Feistel] gives us a demo of how this could work with nothing ...