INNER CODE UNIT · Rust

hash_leaf

risc0/risc0-ethereum · crates/aggregation/src/lib.rs:442

fn hash_leaf(value: &Digest) -> Digest {
    let mut hasher = Keccak256::new();
    hasher.update(LEAF_TAG);
    hasher.update(value.as_bytes());
    hasher.finalize().0.into()
}

/// Computes the hash of a sorted pair of [Digest].
fn commutative_keccak256(a: &Digest, b: &Digest) -> Digest {
    let mut hasher = Keccak256::new();
    if a.as_bytes() < b.as_bytes() {
        hasher.update(a.as_bytes());
        hasher.update(b.as_bytes());
    } else {
        hasher.update(b.as_bytes());
        hasher.update(a.as_bytes());
    }
    hasher.finalize().0.into()

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