Modified Lu-Lee cryptosystems
Lin Xu-Duan, Cai Chang-Nian · Electronics Letters · 1989
Lu and Lee's cryptosystem has been proved to be insecure, and Adiga and Shankar's modified Lu-Lee system has been threatened by Kannan's algorithm. Here, we propose other modified Lu-Lee cryptosystems which use nonlinear encryption functions. The new systems seem to be secure.