Algebra and computer science : Joint AMS-EMS-SPM Meeting, Algebra and Computer Science, June 10-13, 2015, Porto, Portugal : Joint Mathematics Meetings, Groups, Algorithms, and Cryptography, January 10-13, 2015, San Antonio, TX : Joint AMS-Israel Mathematical Union Meeting, Applications of Algebra to Cryptography, June 16-19, 2014, Tel-Aviv, Israel / Delaram Kahrobaei, Bren Cavallo, David Garber, editors