Alin Tomescu

fast Poseidon-BN254 hashing via `neptune` and caching

1

## Description **PS:** Please don’t mind the ~15,000 line PR; it’s just the BN254 specific Poseidon constants for `neptune`. This PR speeds up Poseidon-BN254 hashing by ~10x, building upon the...

added benchmarks for G_T

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Added some missing benchmarks for $\mathbb{G}_T$ operations. **Note:** The `rust_toolchain` file and the hardcoded version in `Cargo.toml` caused problems for me. However, I can revert those changes if need be.

feat: handle circom tags

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From a discussion [here](https://x.com/alinush407/status/1915826570322727373) with @erhant, it appears that `circomkit` does not yet handle automatically-generating wrappers for `circom` templates whose input signals are [tagged](https://blog.trailofbits.com/2024/01/02/tag-youre-it-signal-tagging-in-circom/). This would be nice to have...

## Description **TODO:** write ## How Has This Been Tested? **TODO:** - slow path vs. fast path - examples for PedEq and Schnorr ## Key Areas to Review **TODO:** write...