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RC4 has remained the most popular software stream cipher since the last two decades. In parallel to cryptanalytic attempts, researchers have come up with many variants of RC4, some targeted to more se...
QUAD is a provable secure stream cipher based on multivariate polynomials which was proposed in 2006 by Berbain, Gilbert and Patarin \cite{BG06}. In this paper we show how to speed up QUAD over GF(256...
Speed Optimized Implementations of the QUAD Algorithm
implementation / QUAD stream cipher throughput optimization hardware acceleration
2013/4/18
We present several software and hardware implementations of QUAD, a recently introduced stream cipher designed to be provably secure and practical to implement. The software implementations target bot...
Improved Algebraic Cryptanalysis of QUAD, Bivium and Trivium via Graph Partitioning on Equation Systems
public-key cryptography algebraic attacks graph partitioning polynomial equations Trivium QUAD
2010/7/14
We present a novel approach for solving systems of polynomial equations via graph partitioning. The concept of a variable-sharing graph of a system of polynomial equations is defined. If such graph is...