Alex Biryukov, Mario Lamberger, Florian Mendel, Ivica Nikolic. Second-Order Differential Collisions for Reduced SHA-256. In Dong-Hoon Lee, Xiaoyun Wang, editors, Advances in Cryptology - ASIACRYPT 2011 - 17th International Conference on the Theory and Application of Cryptology and Information Security, Seoul, South Korea, December 4-8, 2011. Proceedings. Volume 7073 of Lecture Notes in Computer Science, pages 270-287, Springer, 2011. [doi]
Abstract is missing.