AES is actually a good example of why this doesn’t work in cryptography. Implementing AES without a timing side channel in C is pretty much impossible. Each architecture requires specific and subtle constructions to ensure it executes in constant time. Newer algorithms are designed to not have this problem (DJB was actually the one who popularized this approach).
alt Hacker News
AES is actually a good example of why this doesn’t work in cryptography. Implementing AES without a timing side channel in C is pretty much impossible. Each architecture requires specific and subtle constructions to ensure it executes in constant time. Newer algorithms are designed to not have this problem (DJB was actually the one who popularized this approach).