Cryptology ePrint Archive: Report 2012/422

Biclique Cryptanalysis of TWINE

Mustafa \c{C}oban and Ferhat Karako\c{c} and \"{O}zkan Bozta\c{s}

Abstract: TWINE is a lightweight block cipher proposed at ECRYPT Workshop on Lightweight Cryptography 2011, Belgium. The cipher consists of 36 rounds and has two versions TWINE-80 and TWINE-128 supporting key lengths of 80 and 128 bits, respectively. The block length of the two versions is 64-bit. In this paper, we present the first single-key attacks on the both versions of the cipher. In these attacks, we use the recently developed biclique technique. The complexities of the attacks on TWINE-80 and TWINE-128 are $2^{79.10}$ and $2^{126.82}$ respectively and the data requirement for the two attacks is $2^{60}$.

Category / Keywords: secret-key cryptography / lightweight block cipher cryptanalysis

Publication Info: Submitted to CANS 2012 Conference

Date: received 27 Jul 2012

Contact author: mustafa coban at tubitak gov tr

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Version: 20120805:141149 (All versions of this report)

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