Related-Key Impossible Differential Attacks on 8-Round AES-192
In this paper we examine the strength of AES against the related-key impossible differential attack, following the work of Jakimoski and Desmedt . We use several additional observations to substantially improve the data and time complexities of their attacks. Amongst our results, we present a related-key attack on 7-round AES-192 with data complexity of 256 chosen plaintexts (instead of 2111). Our attack on 8-round AES-192 has data complexity of 268.5 chosen plaintexts (instead of 288). The time complexities of our attacks is also substantially lower than the time complexities of previous attacks.
KeywordsAES related-key differentials impossible differentials
Unable to display preview. Download preview PDF.
- 3.Biham, E., Biryukov, A., Shamir, A.: Cryptanalysis of Skipjack Reduced to 31 Rounds. In: Stern, J. (ed.) EUROCRYPT 1999. LNCS, vol. 1592, pp. 12–23. Springer, Heidelberg (1999)Google Scholar