By Colin Boyd, Leonie Simpson
This booklet constitutes the refereed convention court cases of the 18th Australasian convention on info safeguard and privateness, ACISP 2013, held in Brisbane, Australia, in July 2013.
The 28 revised complete papers provided have been conscientiously chosen from seventy eight submissions.
Conference papers are geared up in technical classes, overlaying themes of Cryptanalysis, RSA, Lattices and safety Proofs, Public Key Cryptography, Hashing, Signatures, Passwords, cellular defense, and mystery Sharing.
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Extra resources for Information Security and Privacy: 18th Australasian Conference, ACISP 2013, Brisbane, Australia, July 1-3, 2013, Proceedings (Lecture Notes in Computer Science / Security and Cryptology)
Because Z1 have the same working key word K4 , there are only 9 unknown state words at (−7) round −8: K4 , K5 , K6 , K7 , K0 and Zi , 1 ≤ i ≤ 4. Hence if we guess 4 working key words K4 , K5 , K6 and K7 , we can deduce the remaining 5 unknown words using 5 state equations. Then we consider the round −7. There are 6 unknown (−6) state words: K1 , l(U ) and Zi , 1 ≤ i ≤ 4, and if l(U ) guessed we can deduce the remaining 5 unknown words using 5 state equations. After we obtain the internal state of round −7, we can deduce K2 using the 5 state equations of round −6.
Springer, Heidelberg (2009) 11. : An Experimentally Veriﬁed Attack on Full Grain-128 Using Dedicated Reconﬁgurable Hardware. , Wang, X. ) ASIACRYPT 2011. LNCS, vol. 7073, pp. 327–343. Springer, Heidelberg (2011) 12. : Breaking Grain-128 with Dynamic Cube Attacks. In: Joux, A. ) FSE 2011. LNCS, vol. 6733, pp. 167–187. Springer, Heidelberg (2011) 13. : A Framework for Chosen IV Statistical Analysis of Stream Ciphers. , Yung, M. ) INDOCRYPT 2007. LNCS, vol. 4859, pp. 268–281. Springer, Heidelberg (2007) 14.
To mount an attack, ﬁrst store sequences of 8 consecutive keystream words, for each message and for each position i such that i mod 8 = 0. Then, look for 114 a collision among the 2 8 = 2111 entries in this table. This can be achieved by sorting the table, with complexity of 2111 × 111 2118 basic comparisons. Then, since the considered objects are of 256 bits, the number of “fortuitous” collisions in the table is 2111 × 2111 × 2−256 0. 2 Besides, when a state collision occurs, a collision is also observed on the entries of the table, provided the additional assumptions (1) and (2) hold, and denote such collision in the table “a true collision” in contrast to “a fortuitous collision”.