Particular Case of Blowfish Algorithm

Abstract

Encryption algorithm plays a crucial role in information security which guarantees the recent growing internet and network applications. They are used to secure the data in wireless networks against malicious attacks but securing data also consumes resources such as C.P.U time, Memory, battery power, encryption time etc. Blowfish, a new secret-key block cipher, is proposed. It is a Feistel network, iterating a simple encryption function 16 times. The block size is 64 bits, and the key can be any length up to 448 bits. Although there is a complex initialization phase required before any encryption can take place, the actual encryption of data is very efficient on large microprocessors. This paper discusses the requirements for a standard encryption algorithm. Experimental results show that Blowfish encryption algorithm may be more suitable for wireless networks with secure data transmission. With reduced bits in plain text and key our aim is to make it useful for systems having minimum configuration.