One among the several challenges in the area of applied cryptography is not just devising a secure cryptographic algorithm but also to manage with its secure and efficient implementation in the hardware and software platforms. Cryptographic algorithms have widespread use for every conceivable purpose. Hence, secure implementation of the algorithm is essential in order to thwart the side channel attacks. Also, most of the cryptographic algorithms rely on modular arithmetic, algebraic operations and mathematical functions and hence are computation intensive. Consequently, these algorithms may be isolated to be implemented on a secure and separate cryptographic unit.