In this book, research work in symmetric domain of cryptography is preferred over asymmetric cryptography domain at FPGA PLATFORM. To minimize the attacks like brute force attacks, linear and differential attacks over the system or the network, the approach adopted in this research work, verifies and conforms the increased level of security in comparison to previous approaches and also keeping in mind the resource consumption. The idea behind is to achieve "OPTIMIZATION" simultaneously increasing the security so that it can be used in different domains whether being at the network, ubiquitous computing, RFID Technology, Crypto-Cards, SIM cards etc. So this highlights the increased security in symmetric cryptography algorithms by proposed FPGA based MULTI-ENCRYPTION ALGORITHM whose results are compared to the previous approaches.