We congratulate Jian Guo (Nanyang Technological University, Singapore) and Meicheng Liu (Nanyang Technological University, Singapore and State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, China) for solving two 3-round pre-image challenges in the Keccak Crunchy Crypto Collision and Pre-image Contest!

Jian and Meicheng solved the 3-round pre-image challenges for widths 800 and 1600. There remains two others, i.e., those for widths 200 and 400, plus of course all the challenges with more rounds!!! [More details…]