andytoshi changed the topic of #bitcoin-wizards to: This channel is for discussing theoretical ideas with regard to cryptocurrencies, not about short-term Bitcoin development | This channel is logged. | For logs and more information, visit https://bitcoin.ninja
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<waxwing>
in musig2, "RHS is a constant value is an essential prerequisite for the applicability of Wagner" (paraphrase) - true, but that on its own doesn't prove there isn't another algorithm :)
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<nickler>
Right, that section is supposed to give some intuition in the introduction. The security proofs further down do prove that there isn't another algorithm
<waxwing>
makes sense, thanks
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<dr-orlovsky>
andytosh1: are bulletproofs deterministic, i.e. for a given set of (value, blinding) only a single possible bulletproof exists?
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<andytosh1>
dr-orlovsky: nope
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<dr-orlovsky>
ok, thank you. But am I right that given pedersen commitment it will be impossible to forge valid bulletproof if the original value is negative (i.e. was overflown)?
<andytosh1>
correct, unless you can solve the discrete log problem
<andytosh1>
or collide sha2 in a certain structured way
<dr-orlovsky>
thank you
<dr-orlovsky>
(or find a bug in bulletproof implementation)
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<waxwing>
nickler, i don't understand the equation just before section 2.3 (the discussion of why v=1 doesn't work),why is the argument to H_sig on the LHS only using R_1 and not also R_2 ?
<waxwing>
i think i get that the effective nonce for each participant here is just b_1 R_i,1 or something like that, in this case, marked with a ^ in the text above, but i can't see how this eqn fits.
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<nickler>
waxwing: because that's a typo in the paper (that we've fixed locally). There's another one in that section. We'll upload a new version in two weeks but I'm sending the current version to you via email now.
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<waxwing>
nickler, received, thanks
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