Advances in Cryptology – CRYPTO 2005: 25th Annual by Xiaoyun Wang, Hongbo Yu, Yiqun Lisa Yin (auth.), Victor

By Xiaoyun Wang, Hongbo Yu, Yiqun Lisa Yin (auth.), Victor Shoup (eds.)

This ebook constitutes the refereed lawsuits of the twenty fifth Annual overseas Cryptology convention, CRYPTO 2005, held in Santa Barbara, California, united states in August 2005.

The 33 revised complete papers provided have been rigorously reviewed and chosen from 178 submissions. The papers are geared up in topical sections on hash features, thought, cryptanalysis, 0 wisdom, anonymity, privateness, broadcast encryption, human-oriented cryptography, mystery sharing, multi-party computation, random oracles, details theoretic safety, and primitives and protocols.

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Additional resources for Advances in Cryptology – CRYPTO 2005: 25th Annual International Cryptology Conference, Santa Barbara, California, USA, August 14-18, 2005. Proceedings

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Dwork, M. Naor, and H. Wee with their incident edges. We need that the “surviving” graph is still hard to pebble. We will also introduce the concept of spontaneously generated pebbles to capture memory reads. We show that pebbling remains hard unless the number of spontaneously generated pebbles is large. We must ensure that no cut in the graph is knocked out. Intuitively, knocking out a cut in the graph corresponds to reducing the depth of the graph, and therefore reducing the difficulty of pebbling the graph.

V. Rijmen and E. Osward. Update on SHA-1. RSA Crypto Track 2005, 2005. 10. X. Y. Wang, D. G. Feng, X. J. Lai, and H. B. Yu. Collisions for Hash Functions MD4, MD5, HAVAL-128 and RIPEMD. Rump session of Crypto’04 and IACR Eprint archive, August 2004. 11. X. Y. Wang, D. G. Feng, X. Y. Yu. The Collision Attack on Hash Function HAVAL128. In Chinese, Science in China, Series E, Vol. 35(4), pp. 405-416, April, 2005. 12. X. Y. Wang and H. B. Yu. How to Break MD5 and Other Hash Functions. 19-35, Springer-Verlag, May 2005.

Clearly, by deleting U we can disconnect it from the inputs. Suppose we delete at most |U |/2 output vertices in F . Then, there are at least |U |/2 vertices left amongst the output nodes, which are connected to at least |U | vertices in level 2 − 1 in F . Again, if we delete at most |U |/2 output vertices in level 2 − 1, then U must be connected to at least |U | vertices in level 2 − 2. Continuing this argument, we may deduce that U must be connected to at least |U |/2 input nodes in F , unless we delete at least |U |/2 nodes at some level.

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