cleanup dependency

Cargo.toml

@@ -8,7 +8,6 @@ edition = "2021"
 
 [workspace.dependencies]
 blake2 = "0.10.6"
-blake3 = "1.5.0"
 educe = "0.5.0"
 hex = "0.4.3"
 itertools = "0.12.0"

crates/prover/Cargo.toml

@@ -10,8 +10,6 @@ small_blowup = []
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-blake2.workspace = true
-blake3.workspace = true
 bytemuck = { workspace = true, features = ["derive"] }
 cfg-if = "1.0.0"
 downcast-rs = "1.2"

crates/prover/benches/merkle.rs

@@ -13,7 +13,7 @@ const LOG_N_ROWS: u32 = 16;
 
 const LOG_N_COLS: u32 = 8;
 
-fn bench_blake2s_merkle<B: MerkleOps<BWSSha256MerkleHasher>>(c: &mut Criterion, id: &str) {
+fn bench_sha256_merkle<B: MerkleOps<BWSSha256MerkleHasher>>(c: &mut Criterion, id: &str) {
     let col: Col<B, BaseField> = (0..1 << LOG_N_ROWS).map(|_| BaseField::zero()).collect();
     let cols = (0..1 << LOG_N_COLS).map(|_| col.clone()).collect_vec();
     let col_refs = cols.iter().collect_vec();
@@ -26,13 +26,13 @@ fn bench_blake2s_merkle<B: MerkleOps<BWSSha256MerkleHasher>>(c: &mut Criterion,
     });
 }
 
-fn blake2s_merkle_benches(c: &mut Criterion) {
-    bench_blake2s_merkle::<SimdBackend>(c, "simd");
-    bench_blake2s_merkle::<CpuBackend>(c, "cpu");
+fn sha256_merkle_benches(c: &mut Criterion) {
+    bench_sha256_merkle::<SimdBackend>(c, "simd");
+    bench_sha256_merkle::<CpuBackend>(c, "cpu");
 }
 
 criterion_group!(
     name = benches;
     config = Criterion::default().sample_size(10);
-    targets = blake2s_merkle_benches);
+    targets = sha256_merkle_benches);
 criterion_main!(benches);

crates/prover/src/core/vcs/bws_sha256_hash.rs

@@ -74,7 +74,7 @@ impl BWSSha256Hasher {
     }
 
     pub fn update(&mut self, data: &[u8]) {
-        blake2::Digest::update(&mut self.state, data);
+        self.state.update(data);
     }
 
     pub fn finalize(self) -> BWSSha256Hash {