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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<andytoshi>
the rangeproofs in monero and in normal CT are identical now (up to engineering decisions, e.g. they use ed25519 and have a different software stack)
<andytoshi>
the other part of CT is checking that transactions add up, which is trivial for normal CT where every input is unambiguous, but harder for monero because inputs have fake output referents
<andytoshi>
that's where ringCT comes in
<kanzure>
identical "and have a different software stack"?
<andytoshi>
algebraically identical :P
<kanzure>
got it
<sipa>
... as long as you don't look at which exact group is used
<kanzure>
ok he means "excepting engineering decisions" i suppose
<andytoshi>
yes, "algebraically" here means "treating the group as a black box"
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* sipa
implements CT with the Z/Zp,+ group
<sipa>
brb
<sipa>
very fast, wow
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<andytoshi>
lol
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<jcorgan>
clever
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<eck>
I was trying to understand some material I read about the mathematically proven properties of Schnorr signatures vs. ECDSA, and found this paper from Oct 2016 suggesting that ECDSA is now rigorously proven to be equivalent to the discrete logarithm problem: https://dl.acm.org/citation.cfm?doid=2976749.2978413
<eck>
does that mean that now the main advantage of Schnorr signatures would be the space savings, since ECDSA is equivalent in mathematical complexity to Schnorr signatures?
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<stevenroose>
mryandao: I really enjoyed the read. It seems quite obvious that someone would already have tried that though.
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<andytoshi>
eck: (a) that does not prove ECDSA equivalent to DL in as strong a model as schnorr; (b) even if it did that would not make aggregation schnorr's only benefit
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<haaning_>
If only block headers are hashed to produce the fingerprint, and the data containing transactions is
<haaning_>
not included in this process, how can we know that transaction data has not been forged?
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