Aztec.nr: SecretAndhash struct

[rahul-kothari]

struct SecretAndHash {
    secret: Field,
    hash: Field,
}
impl SecretAndHash {
    fn random() -> Self {
        let secret = unsafe_rand();
        let hash = compute_secret_hash(secret);
        SecretAndHash { secret, hash }
    }
}

Thanks Oleh for the feedback