Algebraic Attack on Small Scale Variants of AES using Compressed Right Hand Sides
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The Advanced Encryption Standard is probably the most used symmetric encryption cipher in use today, which makes it particularly interesting for cryptanalysis. This thesis attacks smallscale variants of AES through a particular branch of algebraic cryptanalysis known as Compressed Right-Hand Sides. We see some success, as we are able to break for the first time three rounds of a 32-bit small-scale variant. We also make an interesting discovery, in that we get indications that some plaintext values result in easier-to-break small-scale instances.