Reversible masking: A novel fault-diagnosed

This paper suggests a novel design of reversible masking circuit for Quantum Cryptography. Quantum computation uses quantum properties to represent data and perform reversible operations on data. In this paper, we proposed to design a reversible masking logic and implement the masking logic using basic quantum gates. The masking expression is thus transformed into a Positive Polarity Reed Muller Expression to calculate its nonlinearity. We also proposed a novel quantum gate design, namely M-gate. based on the basic quantum gates. To analyze the design quantum cost is calculated can improve the circuit comparatively another masking circuit. From this circuit we are getting high nonlinearity which is much better than another masking circuit. Here also we test the circuit by using single Missing Gate Fault Model and Multiple Missing Gate Fault Model.