Download PDF by Marc Stevens, Arjen Lenstra, Benne de Weger (auth.), Moni: Advances in Cryptology - EUROCRYPT 2007: 26th Annual

By Marc Stevens, Arjen Lenstra, Benne de Weger (auth.), Moni Naor (eds.)

ISBN-10: 3540725393

ISBN-13: 9783540725398

Those are the court cases of Eurocrypt 2007, the twenty sixth Annual IACR EurocryptConference. The convention was once backed via the overseas organization forCryptologic study (IACR; see www.iacr.org), this 12 months in cooperation withthe learn team on arithmetic utilized to Cryptography at UPC and theResearch workforce on info safeguard at UMA. The Eurocrypt 2007 ProgramCommittee (PC) consisted of 24 individuals whose names are indexed at the nextpage.The computer selected a number of regulations: 0 computing device papers - no software Committeemember may put up papers; not obligatory anonymity - authors may select toanonymize their papers or no longer. nameless papers have been taken care of as ordinary, i.e.,the author’s identification used to be no longer printed to the computer. The submission software program usedwas “Web Submission and assessment software program” written and maintained through ShaiHalevi. there have been 173 papers submitted to the convention and the computer chose33 of them. each one paper was once assigned to at the least 3 notebook participants, who eitherhandled it themselves or assigned it to an exterior referee. After the stories weresubmitted, the committee deliberated either on-line for numerous weeks and finallyin a face-to-face assembly held in Paris. as well as notification of the decisionof the committee, authors obtained reports. Our objective was once to supply meaningfulcomments to authors of all papers (both these chosen for this system andthose no longer selected). The default for any file given to the committee used to be thatit will be on hand to the authors to boot.

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Read or Download Advances in Cryptology - EUROCRYPT 2007: 26th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Barcelona, Spain, May 20-24, 2007. Proceedings PDF

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Extra info for Advances in Cryptology - EUROCRYPT 2007: 26th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Barcelona, Spain, May 20-24, 2007. Proceedings

Example text

Figure 2 shows our upper bound as function of q for the case n = 128. 9 80 90 Fig. 2. Our upper bound on AdvMDC2 (q) as a function of q (solid line) compared to 128 the previous best upper bound of q(q + 1)/2128 (dotted line) 2 Preliminaries n n n Let Bloc(n) be the set of functions E: {0, 1} × {0, 1} → {0, 1} such that n E(K, ·) = EK (·) is a permutation on {0, 1} . Given a blockcipher E ∈ Bloc(n) n 2n we define MDC2E : ({0, 1} )+ → {0, 1} by the algorithm of Fig. 1. The hash of a word X where |X| is a multiple of n by MDC2E is denoted by MDC2E (X).

We keep only the N paths with the fewest bitconditions, for some preset value of N . Also we keep only those paths that have a preset minimum total tunnel strength over the Q4 , Q5 , Q9 , Q10 -tunnels [9]. With the exception of the 2nd, all applications can be fully parallelized. For the 1st and 5th application, which were by far the most cpu-time consuming, we used BOINC; the others were run on a cluster. 509 certificates with different name fields but idential signatures. Our construction required substantial cpu-time, but chosen-prefix collisions can be constructed much faster by using a milder birthday condition (namely, just δa = 0 and δc = δd) and allowing more near-collision blocks (about 14).

In CT-RSA, pages 172– 190, 2005. 9. Antoine Joux. Multicollisions in iterated hash functions. application to cascaded constructions. In CRYPTO, pages 306–316, 2004. 10. Jonathan Katz and Chiu-Yuen Koo. On constructing universal one-way hash functions from arbitrary one-way functions, 2005. Cryptology ePrint Archive: Report 2005/328. 11. Ueli M. Maurer and James L. Massey. Cascade ciphers: The importance of being first. J. Cryptology, 6(1):55–61, 1993. 12. Remo Meier and Bartosz Przydatek. On robust combiners for private information retrieval and other primitives.

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Advances in Cryptology - EUROCRYPT 2007: 26th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Barcelona, Spain, May 20-24, 2007. Proceedings by Marc Stevens, Arjen Lenstra, Benne de Weger (auth.), Moni Naor (eds.)


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