Quantum Dot-Cellular Automata based cipher text design for nano-communication

Quantum Dot-Cellular Automata (QCA) is a new nanotechnology model that serves as an alternative solution to CMOS that have many physical limits and lots of circuitry bounds. QCA is a transistor less technology and here information is passed based on the charge on electron and by mutual electrostatic repulsion between them. QCA has very high device density, faster switching speed clocking and extremely low power consumption. In cryptographic application QCA circuits can play a major role. Both encryption and decryption process is implemented using QCA based logic circuit. This paper describes the basic way to generate cipher text in QCA that can be helpful in QCA based secure nanocommuncation. The implementation and testing of results is performed using QCA Designer-2.0.3.