Hand-Computed Checksums and Secret Sharing w/ Andrew Poelstra

Will work through a variant of "codex32", a volvelle (paper computer) based scheme for generating and verifying checksums; splitting and recovering secrets; encrypting and decrypting them. Throughout we will avoid the use of electronic computers, whose complexity and lack of transparency make them a liability for long-term cold storage. Codex32 is designed to work with 128-bit keys. Because of a current lack of wallet support, and time constraints, we will instead work through the processes for 32- or 48-bit keys. SETUP: Cutting out and assembling volvelles (paper computers)

https://btcpp2022.sched.com/event/12P6Q/bitcoin-paper-computers-a-secret-sharing-workshop