The Advanced Encryption Standard (AES) still withstands all cryptanalytic attacks after 20 years of investigation. Recently we observed that not all AES keys are alike and we can obtain longer distinguishers when the keys are weak. These C codes check the Multiple-of-n property on Small AES for user specified key and number of rounds.

https://github.com/cihangirtezcan/AES_weak_keys

These results are also published in our paper titled "Weak-Key Distinguishers for AES" at SAC 2020 conference.