Have you ever looked at how X.509 certificate signatures are calculated? It’s wild, but it’s also observably secure. The quadruple HMAC looks… weird, but it s

Have you ever looked at how X.509 certificate signatures are calculated? It’s wild, but it’s also observably secure. The quadruple HMAC looks… weird, but it seems like something you could just code and test in a few minutes and then forget about.