International Journal of Engineering Sciences & Management (IJESM)
Authentication is an indispensable part of cryptography, which is an unconditionally secure key distribution technique based on the laws of nature. The paper explains the encryption technique using AES (Advanced Encryption Standard) algorithm with 128 bits block size and 128 bit key sizes. The design is developed using S box technique with optimal hardware solution with the help of VHDL programming language. The design is synthesized on Vertex-5 FPGA (Field Programmable Gate Array) using Xilinx 14.2 software and Modelsim 10.1 b. The algorithm is implemented to work in software and the file is to be encrypted in software and transferred to the machine containing the FPGA, which guarantees the secured communication and authentication.