Stanislav Bulygin, Albrecht Petzoldt, Johannes Buchmann. Towards Provable Security of the Unbalanced Oil and Vinegar Signature Scheme under Direct Attacks. In Guang Gong, Kishan Chand Gupta, editors, Progress in Cryptology - INDOCRYPT 2010 - 11th International Conference on Cryptology in India, Hyderabad, India, December 12-15, 2010. Proceedings. Volume 6498 of Lecture Notes in Computer Science, pages 17-32, Springer, 2010. [doi]
Abstract is missing.