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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<elichai2>
I have an idea I'm still working on, on how MW can be completely non interactive
* gmaxwell
mouths "and its gone"
<elichai2>
If I(receiver) post a kG(blinding factor) and a signature with that k, then the sender can add to that the vH(amount) and produce a signature with all of the excess by aggregating his signature using k with the one I made on my k beforehand
<elichai2>
Maybe I should try to formalize it on a piece of paper and try to attack it before posting on IRC lol
<elichai2>
One problem I see is that this exposes vH, which is then susptible to brute forces or some table, but this can be solved by using a very fine grain coin (the closer to 96 bit the better) and maybe even some KDF on top to make it slower
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<waxwing>
adiabat_, you referenced this in your DLC paper: https://eprint.iacr.org/2017/394.pdf ; i realise this may just be a historical curiosity, but is their analysis correct, in particular is it the case that it's not possible specifically because OP_AND is disabled? (which they amusingly only reveal on the very last line of the paper :) )
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<waxwing>
seems pretty clear that that's right.
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