feat: merge-train/barretenberg #16805
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…6703) a small PR doing the following as a part of the `databus` audit - added tests to check the handling of constant or unnormalized indexes - removed some ugliness with dangling witnesses and replaced them with `set_variable` - some minor cleanups
### 🧾`stdlib::poseidon2` internal audit - Most of the `Poseidon2`-related methods and classes were unnecessarily templated on a variety of parameters, such as `rate` and `capacity` of the permutation, while at the same time our Circuit Builders would only support the case `rate = 3`, `capacity = 1`. To avoid confusion and improve the readability, I minimized the number of templates. - The `sponge` class was only invoked with a sequence of `absorb` calls that would lead to a single `squezze` call. It allowed to simplify the class logic. - Simplified the `Poseidon2Permutation` class by re-using some of the `field_t` methods. Improved the docs. - Added a detailed **readme** that contains links to the sources, including the padding choices in `sponge` and the explanation of the custom Poseidon2 gates - Audited relations, expanded corresponding docs - Added a bunch of tests - collision-resistance sanity check, test against the hash outputs from https://github.com/zemse/poseidon2-evm, several basic failure tests
iakovenkos
requested review from
IlyasRidhuan,
fcarreiro and
jeanmon
as code owners
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Author
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🤖 Auto-merge enabled after 4 hours of inactivity. This PR will be merged automatically once all checks pass. |
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BEGIN_COMMIT_OVERRIDE
chore: databus internal audit - small cleanups and tests coverage (#16703)
chore:
stdlib::poseidon2internal audit (#16534)END_COMMIT_OVERRIDE