feat: add ripemd160 hash function with permutation #1120
+635
−4
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Description
This PR adds the permutation function used in ripemd160 and the full hash function. Hash function construction is similar to SHA2, except uses little endian encoding.
Implementing as a precompile for Linea will be done in a separate PR when the interfaces are fixed.
Type of change
How has this been tested?
How has this been benchmarked?
In SCS a block cost is approx 60k PLONKish constraints. Not very specific as there is overhead for initializing the lookup table for AND/XOR/OR computation.
Checklist:
golangci-lint
does not output errors locally