Abstract
AES (Advanced Encryption Standard) is a worldwide used standard for symmetric encryption and decryption. AES is for instance used in LTE (Long-Term Evolution) and in Wi-Fi. AES is based on operations of permutations and substitutions. Furthermore, AES is using a key scheduling algorithm. It has been proven that AES is vulnerable to side-channel attacks, related sub-key attacks and biclicque attacks. This paper introduces a new dynamic version of AES where the main flow is depending on the TNAF (τ-adic Non-Adjacent Form) value. This new approach can prevent side-channel attacks, related sub-key attacks and biclique attacks.
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