--- Log opened Wed Jul 08 00:00:13 2020
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07:13 < Guest92810> I recall we discussed random blinding for every signature here before.  we currently don't do this because it needs an ec mult. but couldn't we get away with less? say we have 16 scalars x and the points xG hardcoded (precomputed at compile them). then at signing time, you choose 32 times one of these pairs at random (hash of the signing inputs). then you get a random scalar and the corresponding point (with log2(16^32)=128 bits of entropy). this is
07:13 < Guest92810> additions
07:13 -!- Guest92810 is now known as real_or_random
07:13 < real_or_random> hm, why did I have a wrong nickname Oo
07:16 < real_or_random> and you can have different parameters of course, e.g., 256 precompumted pairs and only 15 additions. but I have the feeling that I overlooked sth because this sounds too simple. sipa nickler
07:18 < real_or_random> another question is the cost model. you can precompute the blinding before the signing, and I think latency is much more important for signing than throughput, at least in bitcoin
07:19 < real_or_random> but then you need to update the blinding parameter in the context and then you run into concurrency issues
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--- Log closed Thu Jul 09 00:00:13 2020