feat: Sync from noir (#6555)

Automated pull of development from the
[noir](https://github.com/noir-lang/noir) programming language, a
dependency of Aztec.
BEGIN_COMMIT_OVERRIDE
feat: add native rust implementations of pedersen functions
(noir-lang/noir#4871)
chore: add benchmarks for pedersen and schnorr verification
(noir-lang/noir#5056)
END_COMMIT_OVERRIDE

---------

Co-authored-by: Tom French <tom@tomfren.ch>

.noir-sync-commit

@@ -1 +1 @@
-a5b7df12faf9d71ff24f8c5cde5e78da44558caf
+fb039f74df23aea39bc0593a5d538d82b4efadf0

noir/noir-repo/acvm-repo/bn254_blackbox_solver/Cargo.toml

@@ -40,6 +40,7 @@ getrandom.workspace = true
 wasmer = "4.2.6"
 
 [dev-dependencies]
+ark-std = { version = "^0.4.0", default-features = false }
 criterion = "0.5.0"
 pprof = { version = "0.12", features = [
     "flamegraph",

noir/noir-repo/acvm-repo/bn254_blackbox_solver/benches/criterion.rs

@@ -2,7 +2,8 @@ use criterion::{criterion_group, criterion_main, Criterion};
 use std::{hint::black_box, time::Duration};
 
 use acir::FieldElement;
-use bn254_blackbox_solver::poseidon2_permutation;
+use acvm_blackbox_solver::BlackBoxFunctionSolver;
+use bn254_blackbox_solver::{poseidon2_permutation, Bn254BlackBoxSolver};
 
 use pprof::criterion::{Output, PProfProfiler};
 
@@ -12,10 +13,58 @@ fn bench_poseidon2(c: &mut Criterion) {
     c.bench_function("poseidon2", |b| b.iter(|| poseidon2_permutation(black_box(&inputs), 4)));
 }
 
+fn bench_pedersen_commitment(c: &mut Criterion) {
+    let inputs = [FieldElement::one(); 2];
+    let solver = Bn254BlackBoxSolver::new();
+
+    c.bench_function("pedersen_commitment", |b| {
+        b.iter(|| solver.pedersen_commitment(black_box(&inputs), 0))
+    });
+}
+
+fn bench_pedersen_hash(c: &mut Criterion) {
+    let inputs = [FieldElement::one(); 2];
+    let solver = Bn254BlackBoxSolver::new();
+
+    c.bench_function("pedersen_hash", |b| b.iter(|| solver.pedersen_hash(black_box(&inputs), 0)));
+}
+
+fn bench_schnorr_verify(c: &mut Criterion) {
+    let solver = Bn254BlackBoxSolver::new();
+
+    let pub_key_x = FieldElement::from_hex(
+        "0x04b260954662e97f00cab9adb773a259097f7a274b83b113532bce27fa3fb96a",
+    )
+    .unwrap();
+    let pub_key_y = FieldElement::from_hex(
+        "0x2fd51571db6c08666b0edfbfbc57d432068bccd0110a39b166ab243da0037197",
+    )
+    .unwrap();
+    let sig_bytes: [u8; 64] = [
+        1, 13, 119, 112, 212, 39, 233, 41, 84, 235, 255, 93, 245, 172, 186, 83, 157, 253, 76, 77,
+        33, 128, 178, 15, 214, 67, 105, 107, 177, 234, 77, 48, 27, 237, 155, 84, 39, 84, 247, 27,
+        22, 8, 176, 230, 24, 115, 145, 220, 254, 122, 135, 179, 171, 4, 214, 202, 64, 199, 19, 84,
+        239, 138, 124, 12,
+    ];
+
+    let message: &[u8] = &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
+
+    c.bench_function("schnorr_verify", |b| {
+        b.iter(|| {
+            solver.schnorr_verify(
+                black_box(&pub_key_x),
+                black_box(&pub_key_y),
+                black_box(&sig_bytes),
+                black_box(message),
+            )
+        })
+    });
+}
+
 criterion_group!(
     name = benches;
     config = Criterion::default().sample_size(40).measurement_time(Duration::from_secs(20)).with_profiler(PProfProfiler::new(100, Output::Flamegraph(None)));
-    targets = bench_poseidon2
+    targets = bench_poseidon2, bench_pedersen_commitment, bench_pedersen_hash, bench_schnorr_verify
 );
 
 criterion_main!(benches);

noir/noir-repo/acvm-repo/bn254_blackbox_solver/src/generator/generators.rs

@@ -0,0 +1,184 @@
+// Adapted from https://github.com/laudiacay/barustenberg/blob/df6bc6f095fe7f288bf6a12e7317fd8eb33d68ae/barustenberg/src/ecc/groups/affine_element.rshttps://github.com/laudiacay/barustenberg/blob/df6bc6f095fe7f288bf6a12e7317fd8eb33d68ae/barustenberg/src/ecc/groups/group.rs
+//!
+//! Code is used under the MIT license
+
+use std::sync::OnceLock;
+
+use ark_ec::short_weierstrass::Affine;
+
+use acvm_blackbox_solver::blake3;
+use grumpkin::GrumpkinParameters;
+
+use super::hash_to_curve::hash_to_curve;
+
+pub(crate) const DEFAULT_DOMAIN_SEPARATOR: &[u8] = "DEFAULT_DOMAIN_SEPARATOR".as_bytes();
+const NUM_DEFAULT_GENERATORS: usize = 8;
+
+fn default_generators() -> &'static [Affine<GrumpkinParameters>; NUM_DEFAULT_GENERATORS] {
+    static INSTANCE: OnceLock<[Affine<GrumpkinParameters>; NUM_DEFAULT_GENERATORS]> =
+        OnceLock::new();
+    INSTANCE.get_or_init(|| {
+        _derive_generators(DEFAULT_DOMAIN_SEPARATOR, NUM_DEFAULT_GENERATORS as u32, 0)
+            .try_into()
+            .expect("Should generate `NUM_DEFAULT_GENERATORS`")
+    })
+}
+
+/// Derives generator points via [hash-to-curve][hash_to_curve].
+///
+/// # ALGORITHM DESCRIPTION
+///
+/// 1. Each generator has an associated "generator index" described by its location in the vector
+/// 2. a 64-byte preimage buffer is generated with the following structure:
+///     - bytes 0-31: BLAKE3 hash of domain_separator
+///     - bytes 32-63: generator index in big-endian form
+/// 3. The [hash-to-curve algorithm][hash_to_curve] is used to hash the above into a curve point.
+///
+/// NOTE: The domain separator is included to ensure that it is possible to derive independent sets of
+/// index-addressable generators.
+///
+/// [hash_to_curve]: super::hash_to_curve::hash_to_curve
+pub(crate) fn derive_generators(
+    domain_separator_bytes: &[u8],
+    num_generators: u32,
+    starting_index: u32,
+) -> Vec<Affine<GrumpkinParameters>> {
+    // We cache a small number of the default generators so we can reuse them without needing to repeatedly recalculate them.
+    if domain_separator_bytes == DEFAULT_DOMAIN_SEPARATOR
+        && starting_index + num_generators <= NUM_DEFAULT_GENERATORS as u32
+    {
+        let start_index = starting_index as usize;
+        let end_index = (starting_index + num_generators) as usize;
+        default_generators()[start_index..end_index].to_vec()
+    } else {
+        _derive_generators(domain_separator_bytes, num_generators, starting_index)
+    }
+}
+
+fn _derive_generators(
+    domain_separator_bytes: &[u8],
+    num_generators: u32,
+    starting_index: u32,
+) -> Vec<Affine<GrumpkinParameters>> {
+    let mut generator_preimage = [0u8; 64];
+    let domain_hash = blake3(domain_separator_bytes).expect("hash should succeed");
+    //1st 32 bytes are blake3 domain_hash
+    generator_preimage[..32].copy_from_slice(&domain_hash);
+
+    // Convert generator index in big-endian form
+    let mut res = Vec::with_capacity(num_generators as usize);
+    for i in starting_index..(starting_index + num_generators) {
+        let generator_be_bytes: [u8; 4] = i.to_be_bytes();
+        generator_preimage[32] = generator_be_bytes[0];
+        generator_preimage[33] = generator_be_bytes[1];
+        generator_preimage[34] = generator_be_bytes[2];
+        generator_preimage[35] = generator_be_bytes[3];
+        let generator = hash_to_curve(&generator_preimage, 0);
+        res.push(generator);
+    }
+    res
+}
+
+#[cfg(test)]
+mod test {
+
+    use ark_ec::AffineRepr;
+    use ark_ff::{BigInteger, PrimeField};
+
+    use super::*;
+
+    #[test]
+    fn test_derive_generators() {
+        let res = derive_generators("test domain".as_bytes(), 128, 0);
+
+        let is_unique = |y: Affine<grumpkin::GrumpkinParameters>, j: usize| -> bool {
+            for (i, res) in res.iter().enumerate() {
+                if i != j && *res == y {
+                    return false;
+                }
+            }
+            true
+        };
+
+        for (i, res) in res.iter().enumerate() {
+            assert!(is_unique(*res, i));
+            assert!(res.is_on_curve());
+        }
+    }
+
+    #[test]
+    fn derive_length_generator() {
+        let domain_separator = "pedersen_hash_length";
+        let length_generator = derive_generators(domain_separator.as_bytes(), 1, 0)[0];
+
+        let expected_generator = (
+            "2df8b940e5890e4e1377e05373fae69a1d754f6935e6a780b666947431f2cdcd",
+            "2ecd88d15967bc53b885912e0d16866154acb6aac2d3f85e27ca7eefb2c19083",
+        );
+        assert_eq!(
+            hex::encode(length_generator.x().unwrap().into_bigint().to_bytes_be()),
+            expected_generator.0,
+            "Failed on x component"
+        );
+        assert_eq!(
+            hex::encode(length_generator.y().unwrap().into_bigint().to_bytes_be()),
+            expected_generator.1,
+            "Failed on y component"
+        );
+    }
+
+    #[test]
+    fn derives_default_generators() {
+        const DEFAULT_GENERATORS: &[[&str; 2]] = &[
+            [
+                "083e7911d835097629f0067531fc15cafd79a89beecb39903f69572c636f4a5a",
+                "1a7f5efaad7f315c25a918f30cc8d7333fccab7ad7c90f14de81bcc528f9935d",
+            ],
+            [
+                "054aa86a73cb8a34525e5bbed6e43ba1198e860f5f3950268f71df4591bde402",
+                "209dcfbf2cfb57f9f6046f44d71ac6faf87254afc7407c04eb621a6287cac126",
+            ],
+            [
+                "1c44f2a5207c81c28a8321a5815ce8b1311024bbed131819bbdaf5a2ada84748",
+                "03aaee36e6422a1d0191632ac6599ae9eba5ac2c17a8c920aa3caf8b89c5f8a8",
+            ],
+            [
+                "26d8b1160c6821a30c65f6cb47124afe01c29f4338f44d4a12c9fccf22fb6fb2",
+                "05c70c3b9c0d25a4c100e3a27bf3cc375f8af8cdd9498ec4089a823d7464caff",
+            ],
+            [
+                "20ed9c6a1d27271c4498bfce0578d59db1adbeaa8734f7facc097b9b994fcf6e",
+                "29cd7d370938b358c62c4a00f73a0d10aba7e5aaa04704a0713f891ebeb92371",
+            ],
+            [
+                "0224a8abc6c8b8d50373d64cd2a1ab1567bf372b3b1f7b861d7f01257052d383",
+                "2358629b90eafb299d6650a311e79914b0215eb0a790810b26da5a826726d711",
+            ],
+            [
+                "0f106f6d46bc904a5290542490b2f238775ff3c445b2f8f704c466655f460a2a",
+                "29ab84d472f1d33f42fe09c47b8f7710f01920d6155250126731e486877bcf27",
+            ],
+            [
+                "0298f2e42249f0519c8a8abd91567ebe016e480f219b8c19461d6a595cc33696",
+                "035bec4b8520a4ece27bd5aafabee3dfe1390d7439c419a8c55aceb207aac83b",
+            ],
+        ];
+
+        let generated_generators =
+            derive_generators(DEFAULT_DOMAIN_SEPARATOR, DEFAULT_GENERATORS.len() as u32, 0);
+        for (i, (generator, expected_generator)) in
+            generated_generators.iter().zip(DEFAULT_GENERATORS).enumerate()
+        {
+            assert_eq!(
+                hex::encode(generator.x().unwrap().into_bigint().to_bytes_be()),
+                expected_generator[0],
+                "Failed on x component of generator {i}"
+            );
+            assert_eq!(
+                hex::encode(generator.y().unwrap().into_bigint().to_bytes_be()),
+                expected_generator[1],
+                "Failed on y component of generator {i}"
+            );
+        }
+    }
+}