New NP-Complete Problems Associated with Lattices. - Shunichi Hayashi; Mitsuru Tada (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

A Digital Signature Scheme Based on NP-Complete Lattice Problems. - Shunichi Hayashi; Mitsuru Tada (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)