Comments (5)
+1, this will make interactions between the primitives easier to spot, since they'll all be defined near each other. It will also force us to be explicit about the requirements of things like hSig.
from zips.
Data point: I probably wouldn't have found the InternalH collision attack if the instantiations were separated. If I had been asked (and given time) to specifically check if that commitment scheme was binding I might have noticed it, but seeing a bunch of important protocol values (rather than an opaque message to be committed to) going into an 128-bit hash was an important motivator to get me thinking about the potential problems.
That said, since we have zcash/zcash#792 I'm still happy about the separation.
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Yes, I'm concerned that the separation in the Zerocash paper might have been a contributing factor to it having been missed by the authors. I want to see how this change looks in practice before committing to making it for the final spec.
from zips.
@defuse and I made a start on this; the work-in-progress is on the https://github.com/zcash/zips/tree/zips27.reorganisation.0 branch.
from zips.
Fixed in 2016.0-beta-1.
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Related Issues (20)
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