Download PDF by Sara Foresti, Giuseppe Persiano: Cryptology and Network Security: 15th International

By Sara Foresti, Giuseppe Persiano

This ebook constitutes the refereed lawsuits of the fifteenth overseas convention on Cryptology and community protection, CANS 2016, held in Milan, Italy, in November 2016.

The 30 complete papers provided including 18 brief papers and eight poster papers have been rigorously reviewed and chosen from 116 submissions. The papers are equipped within the following topical sections: cryptanalysis of symmetric key; aspect channel assaults and implementation; lattice-based cryptography, digital deepest community; signatures and hash; multi social gathering computation; symmetric cryptography and authentication; procedure safety, practical and homomorphic encryption; details theoretic protection; malware and assaults; multi celebration computation and sensible encryption; and community defense, privateness, and authentication.

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Extra resources for Cryptology and Network Security: 15th International Conference, CANS 2016, Milan, Italy, November 14-16, 2016, Proceedings

Sample text

Assuming that x1 is balanced over a chosen plaintext set Λ, the aim is to recover round keys such that Λ x1 = 0. Then, x1 = y4 y2 ⊕ y3 ⊕ y1 ⊕ 1 from the ANF of S −1 , and Λ y4 y2 = Λ y3 ⊕ y1 because Λ x1 = 0. Therefore, we independently evaluate the XOR of y4 y2 and that of y3 ⊕ y1 , and we then search for round keys that two XORs take the same value. In [19], Zhang et al. attacked 10-round PRESENT-80 and 11-round PRESENT-128 by using the MTTS technique. Fast Fourier Transform (FFT) Key Recovery Technique [13].

Algorithm 2 shows the algorithm to evaluate the propagation characteristic for round functions. This evaluation is repeated until there is no integral characteristic in the output of the round function. Compact Representation for Division Property 29 7-Round Integral Characteristic Revisited. We first revisit the 16th order integral characteristic [15], where the lsb in the output of the 7-round PRESENT is balanced when the least sixteen bits are active and the others are constant. 164 , and the The bit-based division property of the plaintext set is D0x00000000000000FF compact representation is ¯0 ¯0 ¯0 ¯0 ¯0 ¯0 ¯0 ¯0 ¯0 ¯0 ¯0 ¯0 ¯0 ¯F ¯F ¯.

Let us consider the propagation characteristic of the bit-based division property for an S-box. Similar observation was shown by Boura and Canteaut in [2], and they introduced a new concept called the parity set as follows. Definition 2 (Parity Set). Let X be a set whose elements take a value of Fn2 . Its parity set is defined as U(X) = u ∈ Fn2 | πu (x) = 1 . x∈X Assuming X has the division property Dkn , U(X) ⊆ {u ∈ Fn2 : w(u) ≥ k}. Let X and S(X) denote the input set and output set of the S-box, respectively.

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