I'm trying to complete a cryptography CTF challenge in which I have a cipher I'm supposed to attain the original plaintext from. I have reason to believe it's been encrypted using AES, but I'm unaware of the typical tests to carry out to check for weak implementations. For instance, with DES you can test for use of weak/semi-weak keys, with RSA you can test for lack of padding etc etc, but as far I know there aren't options like this with AES. Where could I possibly begin looking for a bad implementation?
closed as too broad by Squeamish Ossifrage, kelalaka, forest, Maarten Bodewes♦ Apr 8 at 9:03
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