Algebraic fault attack on Helix
Chen Ha · Jisuanji gongcheng yu sheji · 2014
An algebraic fault attack method on Helix is first proposed.The attack combines algebraic attack with differential fault attack,firstly ageneral model to attack the differential equations of addition is proposed.Secondly,the algebraic equation system of Helix under the model is built by choosing different plaintexts and inserting random faults.Finally,the key is recovered by solving the equation system with the CryptoMiniSAT solver.Experimental results show that it can recover the 248bits of the working keys and the rest 8bits can recovered by exhaustive research.The model can is applied to other stream ciphers with its versatility and solving conveniently.