id: 05363346 dt: j an: 05363346 au: Longrigg, Jonathan; Ushakov, Alexander ti: Cryptanalysis of the shifted conjugacy authentication protocol. so: J. Math. Cryptol. 2, No. 2, 109-116 (2008). py: 2008 pu: Walter de Gruyter, Berlin la: EN cc: ut: braid group cryptography; authentication protocol; shifted conjugacy; ultra summit set; centralizer ci: Zbl 1191.94085 li: doi:10.1515/JMC.2008.005 ab: Summary: We present the first practical attack on the shifted conjugacy-based authentication protocol proposed by {\it P. Dehornoy} [in: Algebraic methods in cryptography. AMS/DMV joint international meeting, June 16‒19, 2005, Mainz, Germany. International workshop on algebraic methods in cryptography, November 17‒18, 2005, Bochum, Germany. Providence, RI: American Mathematical Society (AMS). Contemporary Mathematics 418, 65‒73 (2006; Zbl 1191.94085)]. We discuss the weaknesses of that primitive and propose ways to improve the protocol. rv: