Yongtae Kim, Chang-Han Kim, Taek-Young Youn. On the Security of Multilevel Cryptosystems over Class Semigroups of Imaginary Quadratic Non-maximal Orders. In Andrea S. Atzeni, Antonio Lioy, editors, Public Key Infrastructure, Third European PKI Workshop: Theory and Practice, EuroPKI 2006, Turin, Italy, June 19-20, 2006, Proceedings. Volume 4043 of Lecture Notes in Computer Science, pages 92-100, Springer, 2006. [doi]
Abstract is missing.