Say you have a web application that's performing AES encryption. What sorts of side channel attacks should one keep an eye out for?
Timing attacks affect RSA more than symmetric ciphers in-so-far as I know.
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In my limited understanding, cache attacks should be consider the most. In AES encryption, one need to subBytes using S-Box. So, for data that has been used and saved in cache, it will takes less time to subBytes. So, Mallory can learn about the pattern of plaintext.