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

Not necessarily — the speed constraint of IQC is in speed of the fastest linear processing, necessarily by design it cannot be parallelized like Bitcoin miners working in unison to “find the winning hash”, and while there exists ASICs for the Wesolowski VDF it can’t get much faster

Ah, now we're talking about the dual - forcing the operation to NOT be done until a certain amount of elapsed time.

FWIW, I'd consider that whatever time-related bounds proofs that timelock cryptography may provide - to be so fuzzy so as to be totally impractical for any practical applications I can think of.

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

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