pub fn sha3_384_hash(data: Bytes) -> Hash {
    return Hash::sha3_384(data);
}

pub fn sha3_384_hash_string(data: String) -> Hash {
    return Hash::sha3_384(data.as_bytes());
}

pub fn address_from_public_key(public_key: Bytes) -> Address {
    require(public_key.len() == 33 || public_key.len() == 65, "Invalid public key length");
    let hash = sha3_384_hash(public_key);
    return Address::from_hash(hash);
}

pub fn is_valid_address(address: Address) -> bool {
    return !address.is_zero();
}

pub fn hex_encode(data: Bytes) -> String {
    return "0x" + data.to_hex();
}

pub fn hex_decode(hex_string: String) -> Bytes {
    let hex = hex_string.trim_start_matches("0x");
    return Bytes::from_hex(hex);
}