Krzysztof Pietrzak, Johan Sjödin. Range Extension for Weak PRFs; The Good, the Bad, and the Ugly. In Moni Naor, editor, Advances in Cryptology - EUROCRYPT 2007, 26th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Barcelona, Spain, May 20-24, 2007, Proceedings. Volume 4515 of Lecture Notes in Computer Science, pages 517-533, Springer, 2007. [doi]
Abstract is missing.