Function hmac_rejects_tampered_data

nodedb-cluster/src/rpc_codec/mac.rs:123–128

()

    #[test]
    fn hmac_rejects_tampered_data() {
        let key = MacKey::from_bytes([7u8; MAC_LEN]);
        let tag = compute_hmac(&key, b"hello world");
        let err = verify_hmac(&key, b"hello WORLD", &tag).unwrap_err();
        assert!(err.to_string().contains("MAC verification failed"));
    }

    #[test]
    fn hmac_rejects_wrong_key() {