Yes. I discovered Montgomery Multiplication from the book Hacker's Delight. Potentially very useful for me.
Yesterday I looked at the wiki page for that, followed the link to Peter Montgomery's wiki page, and thought I'd send him a little thank-you just for that (I had no idea of his crypto work, none at all). Then I noticed he had died that very day, yesterday, Feb 18th 2020, age 72. I wish I'd just been able to send him that little thank-you. I missed that window by a few hours.
Legend in cryptography who created many algorithms for fast and secure elliptic curve cryptography.
https://en.wikipedia.org/wiki/Peter_Montgomery_(mathematicia...