Guilhem Castagnos, Fabien Laguillaumie. On the Security of Cryptosystems with Quadratic Decryption: The Nicest Cryptanalysis. In Antoine Joux, editor, Advances in Cryptology - EUROCRYPT 2009, 28th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Cologne, Germany, April 26-30, 2009. Proceedings. Volume 5479 of Lecture Notes in Computer Science, pages 260-277, Springer, 2009. [doi]