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14:41 < DougieBot5000> Does anyone happen to know any resources on the reduction of elliptic curve discrete logarithm to an NP-Complete fproblem like Boolean Satisfiability? I am having no luck in my searches
14:42 < DougieBot5000> I would prefer not to have to run a C source file with a dumbed down version of the algorithm through a bounded model checker, since I asusme a direct reduction would require fewer clauses/variables (and a lot less wor massaging the code to something the model checker will accept)
14:44 < DougieBot5000> I assume a reduction from EC-DLP to an NP-Complete problem exists (since DLP is believed to be NP-Intermediate)
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16:48 < kanzure> "Bitcoin coin selection with leverage" https://arxiv.org/pdf/1911.01330.pdf
16:48 < kanzure> https://engineering.cmu.edu/thailand/_files/documents/tendrilstaller-block-delay-attack-in-bitcoin.pdf
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17:40 < harding> I don't quite get that "coin selection with leverage" paper.  IIUC, the basic idea seems to be that you have two payment requests; you attempt to generate a changeless transaction to fulfill the first request and store whichever attempt produces a change output nearest the value of the second payment request.  That way, if you fail to generate a changeless transaction for the first request, you can at least ensure that you generate
17:40 < harding>  a changeless transaction for the second request by sending the saved near-match.  That seems smart, but I would think the spender would save money by just batching the two payment requests into the same transaction, since that would eliminate the overhead of a second transaction and since they already found a set of inputs whose amounts equal the total desired payout amounts (including fees).
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--- Log closed Wed Nov 20 00:00:13 2019