With the growing data in transit, security has become utmost important issue to be addressed. Security of the data has given momentum to fields like cryptography. There are many cryptographic algorithms that have come in forefront in past decades. The application of each algorithm has grown in manifolds. This paper reviews the cryptography algorithm blowfish and provides a fair comparison of it with DES. It has emerged a strong competitor to its contemporaries like AES and DES due to its compactness. Implementation of blowfish on supercomputers IMANC and also using MPI provided quintessential testimonial in the evaluation of blowfish in terms of speed, performance throughput and efficiency. The paper also reviews the modifications in the blowfish to support the security elements in the IoT. Although late in development blowfish has emerged in the scene as the best suited for the wireless networks, a nuance tested on variety of the data types.

Keywords : AES, Blowfish, Differential Analysis, Linear Cryptanalysis.