sipa changed the topic of #bitcoin-wizards to: This channel is for discussing theoretical ideas with regard to cryptocurrencies, not about short-term Bitcoin development | http://bitcoin.ninja/ | This channel is logged. | For logs and more information, visit http://bitcoin.ninja
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isis_ is now known as isis
<PaulTroon__>
does anyone have a good reference for an optimistic fair-exchange protocol used to exchange a signature for a decryption key?
<PaulTroon__>
I've seen some good protocols for exchanging sigs but not sure if their is an equivalent for decryption keys.
<aj>
PaulTroon__: scriptless scripts let you do a setup such that as soon as a schnorr signature is published, a (different) ecc curve point secret is revealed
<PaulTroon__>
thanks aj, that sounds promising. I think the hard part is establishing that the encrypted content was encrypted with a particular secret.
<PaulTroon__>
Maybe that's just impossible with out some zk tricks though
<aj>
PaulTroon__: revealing info about encrypted content without revealing the encrypted content sounds like a zk problem, yeah
<PaulTroon__>
On the other hand, maybe that's not necessary since in my setup the encryption can be by someone trusted outside the fair exchange. So the receiver the content only needs to confirm the encrypted content matches some hash from the (trusted) sender.
<PaulTroon__>
Anyway, thanks - I'll read up on this some more and have better questions.
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