#bitcoin-wizards on 2019-01-28 — irc logs at freenode.irclog.whitequark.org

2015-10-30 00:53 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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00:26 <adam3us> hmm andytoshi (afk but on other comms) thinks the problem is if there are two coins excluded, then with QC one can be negative

00:27 <adam3us> and if there is one coin excluded, then obviously there is no ambiguity because the coin supply is known and the binding elgamal commitment reveals the sum of the values in it, so can be subtracted revealing the hiding amount by elimination

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14:43 <mass> hi

14:46 <mass> PEOPLE

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21:03 <adlai> "people"? that's wizards to you, you, you... higgs-impersonating robot.

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22:02 <drexl> bunz is talking about rsa accumulators https://www.youtube.com/watch?v=wftY1qZl-Fw

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23:43 <ratonlaveur> I'm sure there has been discussion about this somewhere someone can send me to, but what happens when sha2 gets broken and bitcoin has to upgrade to either sha3 or another more advanced algorithm?

23:44 <nsh> https://bitcoin.stackexchange.com/questions/8702/if-sha256-and-or-ripemd-160-were-broken-would-all-bitcoin-addresses-be-compromi

23:46 <ratonlaveur> thanks

23:46 <nsh> swapping out the proof-of-work function is 'less bad', but still a hard-fork, consensus rule change. switching address formats is more work but continuity could still be ensured. it's more likely [imho] that elliptic curve DLP will break before hash functions

23:46 <nsh> because it's far more susceptible to the kinds of more powerful [quantum] computing that we're currently imagining to be on the horizon

23:47 <nsh> but some freak development in classic computer science could make finding preimages or collisions in hash functions non-computationally-hard, i suppose