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ICFCA
2010
Springer
14 years 2 months ago
Hardness of Enumerating Pseudo-intents in the Lectic Order
We investigate the complexity of enumerating pseudo-intents in the lectic order. We look at the following decision problem: Given a formal context and a set of n pseudo-intents det...
Felix Distel
ACSAC
2001
IEEE
13 years 11 months ago
Why Information Security is Hard-An Economic Perspective
According to one common view, information security comes down to technical measures. Given better access control policy models, formal proofs of cryptographic protocols, approved ...
Ross J. Anderson
FOCS
1992
IEEE
13 years 11 months ago
Proof Verification and Hardness of Approximation Problems
The class PCP(f(n), g(n)) consists of all languages L for which there exists a polynomial-time probabilistic oracle machine that uses O(f(n)) random bits, queries O(g(n)) bits of ...
Sanjeev Arora, Carsten Lund, Rajeev Motwani, Madhu...
FROCOS
2005
Springer
14 years 1 months ago
Logical Analysis of Hash Functions
Abstract. In this paper we report on a novel approach for uniform encoding of hash functions (but also other cryptographic functions) into propositional logic formulae, and reducin...
Dejan Jovanovic, Predrag Janicic
CP
2007
Springer
14 years 1 months ago
Hierarchical Hardness Models for SAT
Abstract. Empirical hardness models are a recent approach for studying NP-hard problems. They predict the runtime of an instance using efficiently computable features. Previous res...
Lin Xu, Holger H. Hoos, Kevin Leyton-Brown