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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<Jmabsd>
0x00 means "push an empty vector to the stack". this is used to signify false and also zero right, so that's the motivation for using 0x00, yes?
<luke-jr>
Jmabsd: zero is an empty vector
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<Jmabsd>
luke-jr: right. if later on the segwit version number would be bumped to 1, 2 etc., then OP_1, OP_2 etc. with opcodes 81, 82 etc. would be used, right.
<nsh>
including by a maths review by Benedikt Bünz
<nsh>
which is a good precedent really
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<nsh>
there is definitely some kind of rainbow table attack based on grinding hashes of valid spend txes and from the other side grinding valid existing signatures for an address using the @satoshi trick
<sipa>
you mean a collision search?
<nsh>
yeah
<sipa>
(rainbow tables are a way to compact dictionary attacks, doesn't apply here i think)
<sipa>
yes, there is, but it's O(2^128) complexity, the same as an ECDLP grind
<nsh>
well, i mean losely as intermediary representation time-space tradeoff attack
<sipa>
and you need to know the pubkey for both
<nsh>
right
<nsh>
thanks
<nsh>
still gets easier the more valid sigs you have though, which maybe makes it worse than a standard collision search
<nsh>
but that easier costs lookup space
<nsh>
i'm just thinking of djb's minding p and q's sieve methodology
<nsh>
but maybe it's not applicable
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