On distinguishing attack against the reduced version of the cipher NLSv2

Rok, strany: 2012, 21 - 32

The Australian stream cipher NLSv2 [Hawkes, P.—Paddon, M.—Rose, G. G.—De Vries, M. W.: \textit{Primitive specification for NLSv2}, Project \mbox{eSTREAM} web page, 2007, 1–25] is a 32-bit word oriented stream cipher that was quite successful in the stream ciphers competition—the project eSTREAM. The cipher achieved Phase 3 and successfully accomplished one of the main requirements for candidates in Profile 1 (software oriented proposals)—to have a better performance than AES in counter mode. However the cipher was not chosen into the final portfolio [Babbage, S.—De Cannière, Ch.—Canteaut, A.—Cid, C.—Gilbert, H.—Johansson, T.—Parker, M.—Pre neel, B.—Rijmen, V.—Robshaw, M.: \textit{The eSTREAM Portfolio}, Project eSTREAM web page, 2008], because its performance was not so perfect when comparing with other finalist. Also there is a security issue with a high correlation in the used S-Box, which some effective distinguishers exploit. In this paper, a practical demonstration of the distinguishing attack against the smaller version of the cipher is introduced. In our experiments, we have at disposal a machine with four cores (Intel\textsuperscript{\textregistered} Core\texttrademark Quad @ 2.66 GHz) and single attack lasts about 6 days. We performed successful practical experiments and our results demonstrate that the distingushing attack against the smaller version is working.

ISO 690:

Braško, M., Boor, J. 2012. On distinguishing attack against the reduced version of the cipher NLSv2. In Tatra Mountains Mathematical Publications, vol. 53, no.3, pp. 21-32. 1210-3195.

APA:

Braško, M., Boor, J. (2012). On distinguishing attack against the reduced version of the cipher NLSv2. Tatra Mountains Mathematical Publications, 53(3), 21-32. 1210-3195.