Advances in Computer Science - ASIAN 2009. Information by Jean Goubault-Larrecq (auth.), Anupam Datta (eds.)

By Jean Goubault-Larrecq (auth.), Anupam Datta (eds.)

This booklet constitutes the refereed court cases of the thirteenth Asian Computing technological know-how convention, ASIAN 2009, held in Seoul, Korea, in December 2009.

The 7 revised complete papers and three revised brief papers awarded including 2 invited talks have been conscientiously reviewed and chosen from forty five submissions. targeting the idea and perform of knowledge defense and privateness, the papers comprise issues of deducibility constraints, symmetric encryption modes, dynamic safety domain names and guidelines, cryptography, formal verification of quantum courses, determination of static equivalence, authenticated message and proxy signature scheme.

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C | E]] be a constraint system. D is uniquely determined if for any ground substitution σ such that dom(σ) = fvar (D), there are ground terms u1 , . . , u such that either mgu(Eσ) = ⊥ or mgu(Eσ) = {z1 = u1 , . . , z = u } where z˜ = {z1 , . . , z }. In that case we let σ be σ ∪ mgu(Eσ). ) Example 8. Let D be the constraint system given in Example 7. We have that fvar (D) = {x0 , x1 }. Once values are assigned to x0 , x1 , there is a unique substitution τ that satisfies the equations in E(D ).

Let u ∈ st(v). Then: 1. either u ∈ (st(H) X )σ; 2. or Hσ u and any simple proof π of Hσ versatile rule. u ends with a composition or a To prove this lemma, we consider the set Π of simple proofs of Hσ v and we prove the lemma by induction on the pair (H, d) where d is the size of a minimal proof in Π. Now, we define the complexity of the proofs witnessing that σ is a solution of D and show that there is always a rule yielding a strictly smaller complexity, until we reach a solved form. C be a uniquely determined constraint system and σ be a solution of D.

Others, like CBC or CTR, will provide confidentiality only if the initial vector (IV) is chosen adequately. Recent years have seen an explosion of new modes of operation for block cipher (IACBC, IAPM [19], XCB [23], TMAC [18,20], HCTR [5], HCH [7], EMU [15], EMU* [12], PEP [6], OMAC [16,17], TET [13], CMC [14], GCM [24], EAX [4], XEX [25], TAE, TCH, TBC [22,28] to name only a few). These new modes of operation often offer improved security guarantees, or additional security features. They also tend to be more complex than the traditional modes of operations, This work was supported by ANR SeSur SCALP, SFINCS, AVOTE and iCORE.

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