Moni Naor Advances in Cryptology - EUROCRYPT 2007, 26th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Barcelona, Spain, May 20-24, 2007, Proceedings EUROCRYPT Lecture Notes in Computer Science 4515 Springer 2007 978-3-540-72539-8 db/conf/eurocrypt/eurocrypt2007.html