@inproceedings{f5005b0a6bc34ac69c789d952c878761,
title = "On related-key attacks and KASUMI: the case of A5/3",
abstract = "Due to its widespread deployment in mobile telephony, the block cipher KASUMI is a prominent target for cryptanalysts. While the cipher offers excellent resistance to differential and linear cryptanalysis, in the related-key model there have been several impressive cryptanalytic results. In this paper we revisit these related-key attacks and highlight a small, but important, detail in the specification of KASUMI for the algorithm A5/3; namely that a 64- and not a 128-bit session key is used. We show that existing related-key attacks on KASUMI in the literature are (negatively) impacted by this feature and we provide evidence that repairing these attacks will be difficult.",
keywords = "Block-cipher, KASUMI, A5/3, related-key attack, 64-bit key version of KASUMI",
author = "Nguyen, {Phuong Ha} and Robshaw, {Matthew J. B.} and Huaxiong Wang",
year = "2011",
doi = "10.1007/978-3-642-25578-6_12",
language = "English",
isbn = "9783642255779",
series = "Lecture Notes in Computer Science",
publisher = "Springer, Springer Nature",
pages = "146--159",
editor = "Bernstein, {Daniel J.} and Sanjit Chatterjee",
booktitle = "Progress in Cryptology - INDOCRYPT 2011",
address = "United States",
note = "12th International Conference on Cryptology in India, INDOCRYPT 2011 ; Conference date: 11-12-2011 Through 14-12-2011",
}