Read e-book online Information Security and Privacy: 16th Australasian PDF

By Claude Carlet (auth.), Udaya Parampalli, Philip Hawkes (eds.)

ISBN-10: 3642224962

ISBN-13: 9783642224966

This e-book constitutes the refereed lawsuits of the sixteenth Australasian convention on details defense and privateness, ACISP 2011, held in Melbourne, Australia, in July 2011.
The 24 revised complete papers provided including an invited speak and nine poster papers have been conscientiously reviewed and chosen from 103 submissions. The papers are geared up in topical sections on symmetric key cryptography, hash features, cryptographic protocols, entry keep an eye on and safety, and public key cryptography.

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Read or Download Information Security and Privacy: 16th Australasian Conference, ACISP 2011, Melbourne, Australia, July 11-13, 2011. Proceedings PDF

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Additional info for Information Security and Privacy: 16th Australasian Conference, ACISP 2011, Melbourne, Australia, July 11-13, 2011. Proceedings

Example text

Another problem is the practical applications of probabilistic algebraic attacks. Results on the Immunity of Boolean Functions against PAA 45 The algebraic immunity distance and k-error algebraic immunity of Boolean functions relate to their resistances to probabilistic algebraic attacks. The results of Section 4 imply the lower bound on algebraic immunity distance of r-th order of a balanced function max{2n−r−1 + 1 nlr (f ) − 2n−2 , 2 AI(f )−r−1 i=0 n−r }, i (6) and the upper bound min{2n−r−1 , 1 nlr (f ), 2n−1 − 2 r i=0 n + 1}.

1 encryptions. 1 . 15 ) ≈ 2 1 × 2171 × (260 + 252 + 244 ) ≈ 5. 1 2 . 1 . 1 encryptions. 6. This step requires 2 × 2203 × 220 × 15 219 −8 212 7. 6 of the key guess remained. 6 trail encryptions are required to recover the whole key. The complexity of this step is thus 2 × 2219 × [1 + (1 − 2−8 ) + . . 6 . 1 15-round encryptions. Table 2. 1 KP: known plaintext; CP: chosen plaintext; CC: chosen ciphertext; DC: differential attack Cipher Camellia-128 New Impossible Differential Attacks of Reduced-Round Camellia-192/256 6 31 Conclusion In this paper, we present several 6-round impossible differentials with F L/F L−1 layers in the middle, which lead to impossible differential attacks on 10-round Camellia-192 and 11-round Camellia-256.

Corollary 11. Let f ∈ Bn . If AI(f ) ≤ k, then nlk (f ) ≤ wtmax (f ) − 2n−k and therefore nlk (f ) ≤ 2n−1 − 2n−k−1 . Proof. The first half part is clear. Then nlk (f ) ≤ min{wtmax (f ) − 2n−k , wtmin (f )} 1 ≤ [wtmax (f ) − 2n−k + wtmin (f )] = 2n−1 − 2n−k−1 . 2 For instance, nl(f ) ≤ 2n−2 when AI(f ) ≤ 1 [24], and nl2 (f ) ≤ 3 · 2n−3 when AI(f ) ≤ 2. Some results on the lower bound on the high order nonlinearity of Boolean functions with designated algebraic immunity was presented by Carlet [4], Mesnager [19] and Lobanov [17].

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Information Security and Privacy: 16th Australasian Conference, ACISP 2011, Melbourne, Australia, July 11-13, 2011. Proceedings by Claude Carlet (auth.), Udaya Parampalli, Philip Hawkes (eds.)


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