Download Filehakin9-Extra-Czerwiec-Ebook.pdf Please login or Register to access downloadables Download Timing Attacks on AES By Vincent Rijmen In this article, we explain two timing attacks on AES. Firstly, by way of introduction, we show how a naive implementation of the finite field operations used in the MixColumns step of AES leads to a simple attack. This attack can also be avoided easily. Next, we show an attack based on the timing differences caused by the working of cache memory. The attack assumes that an attacker can make accurate timing measurements and requires a bit more analysis, but is also more difficult to counter. Timing Attacks Against RSA Revisited By Qi Chai To make our attacks more instructive and concise, we consider a “local” attacking scenario such that Eve is able to access the target device, e.g., a server or a tamper-resistant smartcard, that stores the private key and runs RSA....
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