Péter Szilágyi
@peter_szilagyi
Former Go Ethereum Lead (2015-2025)
My last talk on #Ethereum, Decentralisation: Original dream vs. shaping reality So long, and thanks for all the fish! 🐣 youtu.be/9WT-nsneEDA?fe…
If anyone wants to grab a coffee in Zug on the 31st, ping me :) Or a drink on the 30th during the #Ethereum bday party by @AKASHAorg.
TIL that Ed25519 digital signatures have 2 modes: pure-ed25519 and ed25519ph. The former operates on a raw message, the latter on a pre-hashed message. The purpose of ed25519ph is to run on HSMs. The YubiHSM does not support it... so for $800, it can only sign 2019 bytes max. 🥲
Fuck my life, a #YubiHSM can: - Attest asymmetric keys - Generate asymmetric wrap keys - CANNOT attest asymmetric wrap keys I.e. when you're trying to back up your HSM to another HSM, it's cryptographically impossible to prove that it will be encrypted to the HSM you intend to.
