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May 4, 2023
* fix: first ecdsa v bit is oddity * fix: recover oddity of public key y * chore: generate * fix: add check for s * chore: generate
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I referred to other implementations to understand how v is computed when creating an ECDSA signature. I had assumed that v gives if
ycoordinate of the ephemeral point is small or large (e.h. bigger than half the order). But due to different encoding order, it was actually the oddity ofy.This is confirmed also in Ethereum Yellow paper (Appendix F) and makes also a lot more sense.