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 / - Fine, Benjamin; Kahrobaei, Delaram; Rosenberger, Gerhard