Download Post-Quantum Cryptography: Second International Workshop, by Carlos Aguilar Melchor, Pierre-Louis Cayrel, Philippe PDF

By Carlos Aguilar Melchor, Pierre-Louis Cayrel, Philippe Gaborit (auth.), Johannes Buchmann, Jintai Ding (eds.)

This ebook constitutes the refereed court cases of the second one overseas Workshop on Post-Quantum Cryptography, PQCrypto 2008, held in Cincinnati, OH, united states, in October 2008.

The 15 revised complete papers offered have been rigorously reviewed and chosen from a variety of submissions. Quantum desktops are expected to wreck current public key cryptosystems in the subsequent decade. Post-quantum cryptography is a brand new quickly constructing zone, the place public key schemes are studied which can face up to those rising assaults. The papers current 4 households of public key cryptosystems that experience the capability to withstand quantum desktops: the code-based public key cryptosystems, the hash-based public key cryptosystems, the lattice-based public key cryptosystems and the multivariate public key cryptosystems.

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Extra info for Post-Quantum Cryptography: Second International Workshop, PQCrypto 2008 Cincinnati, OH, USA, October 17-19, 2008 Proceedings

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30 J. Baena, C. Clough, and J. Ding Fig. 6. Running time and required remory under GB attack for q = 13, v = 4, r = 3 and D = 2. Including the field equations in the attack. Attacking and Defending the McEliece Cryptosystem Daniel J. O. nl Abstract. This paper presents several improvements to Stern’s attack on the McEliece cryptosystem and achieves results considerably better than Canteaut et al. 4GHz Core 2 Quad CPU, or 7 days by a cluster of 200 CPUs. This attack has been implemented and is now in progress.

4. This makes the signature scheme much faster, as we will see in Sect. 2. 2 The Signing Process Although HFE is perfectly suitable for encryption and digital signatures, the map F defined by (1) is usually not a surjection. However, in the case of SquareVinegar schemes, for every different set of vinegar variables we usually obtain a totally different quadratic polynomial in X, which increases the probability of finding a signature for a given document. Actually, in our experiments we were always able to find a signature.

54× the clock speed of the Alpha 21164, has four parallel cores (compared to one), and can perform three arithmetic instructions per cycle in each core (compared to two). But these hardware improvements alone would only reduce 7400000 days to 220000 days. The remaining speedup factor of 150, allowing us to carry out the first successful attack on the original McEliece parameters, comes from our improvements of the attack itself. This section discusses the software performance of our attack in detail.

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