feat: Add Poseidon-BN254 hash functions #1176
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kevaundray
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kevaundray
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* master: chore: update flake version to match current release (#1204) feat!: Switch to aztec_backend that uses upstream BB & UltraPlonk (#1114) chore(ssa refactor): Add Context structs and start ssa gen pass (#1196) chore(ssa): Replace JmpIf with BrIf (#1193) chore(noir): Release 0.4.1 (#1164) chore(ssa refactor): Add DenseMap and SparseMap types (#1184) feat: bump noir-source-resolver version (#1182) chore(deps): bump h2 from 0.3.16 to 0.3.18 (#1186) fix(nargo): restore `nargo codegen-verifier` functionality (#1185) chore: simplify setup code in `noir_integration` test (#1180) feat: Add Poseidon-BN254 hash functions (#1176)
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Related issue(s)
Resolves #1162
Description
Following up on the discussion in #1162, this PR adds the more conventional fixed-length Poseidon hash functions in the case of the BN254 field (i.e. using the permutation instances under
std::hash::poseidon::bn254::perm). These hash functions agree with those used by Circom. These are exposed asstd::hash::poseidon::bn254::hash_1,std::hash::poseidon::hash_2, ...,std::hash::poseidon::bn254::hash_16.Summary of changes
Dependency additions / changes
Test additions / changes
The
poseidonperm_x5_254test was modified to make use of the appropriate hash functions directly and thus renamed. Both Poseidon tests are still in the wrong place due to thelinear_eval is not 0.bug (see #1124).Checklist
cargo fmtwith default settings.Documentation needs
Additional context