Download Advances in Cryptology — CRYPTO 2001: 21st Annual by Boaz Barak, Oded Goldreich, Rusell Impagliazzo, Steven PDF

By Boaz Barak, Oded Goldreich, Rusell Impagliazzo, Steven Rudich, Amit Sahai, Salil Vadhan (auth.), Joe Kilian (eds.)

Crypto 2001, the twenty first Annual Crypto convention, was once subsidized through the Int- nationwide organization for Cryptologic learn (IACR) in cooperation with the IEEE desktop Society Technical Committee on defense and privateness and the pc technology division of the college of California at Santa Barbara. The convention bought 156 submissions, of which this system committee chosen 34 for presentation; one used to be later withdrawn. those complaints include the revised models of the 33 submissions that have been awarded on the convention. those revisions haven't been checked for correctness, and the authors undergo complete accountability for the contents in their papers. The convention software incorporated invited lectures. Mark Sherwin spoke on, \Quantum info processing in semiconductors: an experimentalist’s view." Daniel Weitzner spoke on, \Privacy, Authentication & id: a contemporary background of cryptographic struggles for freedom." The convention application additionally integrated its perennial \rump session," chaired by means of Stuart Haber, that includes brief, casual talks on late{breaking study information. As i attempt to account for the hours of my existence that ?ew o to oblivion, I detect that almost all of my time was once spent cajoling gifted innocents into spending much more time on my behalf. i've got accrued extra money owed than i will be able to ever desire to pay off. As mere statements of thank you are definitely insu cient, contemplate the remainder of this preface my model of bankruptcy 11.

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Extra info for Advances in Cryptology — CRYPTO 2001: 21st Annual International Cryptology Conference, Santa Barbara, California, USA, August 19–23, 2001 Proceedings

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Frans van Dorsselaer. Obsolescent feature. Winning entry for the 1998 International Obfuscated C Code Contest, 1998. org/. J. de Abstract. We propose a new security measure for commitment protocols, called Universally Composable (UC) Commitment. The measure guarantees that commitment protocols behave like an “ideal commitment service,” even when concurrently composed with an arbitrary set of protocols. This is a strong guarantee: it implies that security is maintained even when an unbounded number of copies of the scheme are running concurrently, it implies non-malleability (not only with respect to other copies of the same protocol but even with respect to other protocols), it provides resilience to selective decommitment, and more.

We describe a uc bit commitment protocol UCCOneTime (for universally composable commitment scheme in the one-time-usable common reference string model). The idea is to use the [dio98] scheme with a special pseudorandom generator, namely, the Blum-Micali-Yao generator based on any trapdoor permutation [y82,bm84]. Let KGen denote an efficient algorithm that on input 1n generates a random public key pk and the trapdoor td . The key pk describes n a trapdoor permutation fpk over {0, 1} . Let B(·) be a hard core predicate for fpk .

Canetti, “Security and composition of multi-party cryptographic protocols”, Journal of Cryptology, Vol. 13, No. 1, winter 2000. R. Canetti, “A unified framework for analyzing security of Protocols”, manuscript, 2000. org/2000/067. R. Canetti and M. Fischlin, “Universally Composable Commitments”. org/2001. R. Cramer and V. Shoup, “A paractical public-key cryptosystem provably secure against adaptive chosen ciphertext attack”, CRYPTO ’98, 1998. I. Damgard, On the existence of bit commitment schemes and zeroknowledge proofs, Advances in Cryptology - Crypto ’89, pp.

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