INNER CODE UNIT · Rust

commutative_keccak256

risc0/risc0-ethereum · crates/aggregation/src/lib.rs:450

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()
}

#[cfg(test)]
mod tests {
    use super::*;
    use hex::FromHex;

    fn assert_merkle_root(digests: &[Digest], expected_root: Digest) {

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