Is there a way to encrypt something on Ethereum and “force” decryption at a certain block? Idea is to sidestep not revealing the data. It’s fine if “as of block X, anyone can decrypt”, not just the original sender.

(summer of) protocol {support | guild | fellowship} ☀️


Timelock cryptography. Not the timelock contract pattern that OpenZeppelin has but something like an RSA or IQC style timelock puzzle. It’d be just as decryptable off-chain as it would on-chain, but that would be the way to do it. You’d basically set the parameters such that it’s _roughly_ the right height, err h

BDFL of Quilibrium, Eng @ Farcaster, ex-Coinbase, always opinionated, never hydrated

/quilibrium

Would you basically encrypt something, post your time lock parameters on chain, and then have people run the puzzle off chain to decrypt?

Yeah, or construct the seed for encryption on chain via some kind of MPC ceremony a la REDSHIFT to receive the data to encrypt if you need it to be fed in from some source that is not a human

If the network can’t support (or would be too expensive to run real-time) the squaring algorithm then off chain would be the way to go

No prob, if you’re curious to hear more about timelock cryptography, I’m giving a talk about it this Wednesday at Solution1: https://www.youtube.com/channel/UCVrf4mR6fyMz24WImpyxDWw/streams it will be titled “This Message will Self-Construct in…”