secp256k1: Implement direct signature verification. #2058
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This implements signature verification directly instead of calling the version in the standard library in order to ultimately be able to break the reliance on big ints it requires and thus allow for optimization specifically for the sec256k1 curve. It currently is only marginally faster since it still relies on big ints. However, there is already a 10% reduction in allocations which reduces pressure on the GC during IBD when there are a ton of signature verifications happening. benchmark old ns/op new ns/op delta ----------------------------------------------------- BenchmarkSigVerify 224238 219603 -2.07% benchmark old allocs new allocs delta ----------------------------------------------------- BenchmarkSigVerify 64 57 -10.94% benchmark old bytes new bytes delta ----------------------------------------------------- BenchmarkSigVerify 3138 2818 -10.20%
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This requires PR #2057.
This implements signature verification directly instead of calling the version in the standard library in order to ultimately be able to break the reliance on big ints it requires and thus allow for optimization specifically for the sec256k1 curve.
It currently is only marginally faster since it still relies on big ints. However, there is already a 10% reduction in allocations which reduces pressure on the GC during IBD when there are a ton of signature verifications happening.