QCA “Quantum Dot-Cellular Automata” is another nano-technology model, that fills in an elective answer for CMOS that have numerous actual cutoff points and heaps of hardware limits. QCA is a semiconductor less innovation as well as data is passed dependent on electron charge and by common electrostatic repugnance among them. QCA has exceptionally higher gadget thickness, quicker exchanging speed timing and very low force utilization. QCA circuits in cryptographic application may assume a significant part. Both unscrambling as well as encryption measure is executed utilizing rationale circuit based on QCA. The research paper depicts fundamental method for creating cipher text in QCA, which may be useful in secure nanocommunication based on QCA.In secured encryption it is finding the realistic way in a secured authentication. The results’ execution along with testing is carried out by utilizing QCA Designer-2.0.3 tool.
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