Computational and combinatorial group theory and cryptography : AMS Special Sessions : Computational Algebra, Groups, and Applications, April 30-May 1, 2011, University of Nevada, Las Vegas, NV : Mathematical Aspects of Cryptography and Cyber Security, September 10-11, 2011, Cornell University, Ithaca, NY / Benjamin Fine, Delaram Kahrobaei, Gerhard Rosenberger, ほか