Cryptography is the science of using mathematics to encrypt and decrypt data. Cryptography finds its application in the areas of Wireless Sensor Network (WSN), smart card, identification, and security. With the ever increasing growth of data communication in the field of ecommerce transactions and mobile communication data security has gained utmost importance. However, the conflicting requirements of power, area and throughput of such applications make hardware cryptography an ideal choice. In this paper, the RC6 algorithm plays a major role in the hardware cryptography.