Comment by hinkley
9 days ago
We’ve had Byzantine crypto key solutions since at least 2007 when I was evaluating one for code signing for commercial airplanes. You could put an access key on k:n smart cards, so that you could extract it from one piece of hardware to put on another, or you could put the actual key on the cards so burning down the data center only lost you the key if you locked half the card holders in before setting it on fire.
SSS is from 1979. https://en.wikipedia.org/wiki/Shamir%27s_secret_sharing
Rendering security concepts in hardware always adds a new set of concerns. Which Shamir spent a considerable part of his later career testing and documenting. If you look at side channel attacks you will find his name in the author lists quite frequently.