@misc{cryptoeprint:2009:242, author = {Alex Biryukov and Dmitry Khovratovich and Ivica Nikoli\'{c}}, title = {Examples of differential multicollisions for 13 and 14 rounds of AES-256}, howpublished = {Cryptology ePrint Archive, Report 2009/242}, year = {2009}, url = {http://eprint.iacr.org/2009/242}, }