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» Approximate Satisfiability and Equivalence
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PKC
2010
Springer
199views Cryptology» more  PKC 2010»
13 years 8 months ago
Using Equivalence Classes to Accelerate Solving the Discrete Logarithm Problem in a Short Interval
The Pollard kangaroo method solves the discrete logarithm problem (DLP) in an interval of size N with heuristic average case expected running time approximately 2 √ N group opera...
Steven D. Galbraith, Raminder S. Ruprai
LICS
1992
IEEE
14 years 1 months ago
Equivalences on Observable Processes
The aim of this paper is to find the finest `observable' and `implementable' equivalence on concurrent processes. This is a part of a larger programme to develop a theor...
Irek Ulidowski
COCO
2008
Springer
88views Algorithms» more  COCO 2008»
13 years 11 months ago
Approximation of Natural W[P]-Complete Minimisation Problems Is Hard
We prove that the weighted monotone circuit satisfiability problem has no fixed-parameter tractable approximation algorithm with constant or polylogarithmic approximation ratio un...
Kord Eickmeyer, Martin Grohe, Magdalena Grübe...
IFIPTCS
2010
13 years 7 months ago
Safe Equivalences for Security Properties
Abstract. In the field of Security, process equivalences have been used to characterize various information-hiding properties (for instance secrecy, anonymity and non-interference)...
Mário S. Alvim, Miguel E. Andrés, Ca...
LICS
2010
IEEE
13 years 8 months ago
Weak Equivalences in Psi-Calculi
Psi-calculi extend the pi-calculus with nominal datatypes to represent data, communication channels, and logics for facts and conditions. This general framework admits highly expr...
Magnus Johansson, Jesper Bengtson, Joachim Parrow,...