Superiority of Blowfish Algorithm in Wireless Networks

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. In this paper, we evaluated the performance of four symmetric key encryption algorithms; AES, DES, 3DES and Blowfish which commonly used for data encryption in terms of encryption time, decryption time & throughput. In this research, we evaluated encryption time, decryption time and throughput for all four encryption algorithms in Visual Basic's environment using large size text data (.doc). Experimental results show that Blowfish encryption algorithm may be more suitable for wireless networks. Study reveals that Blowfish gives better performance than AES, DES and 3DES in terms of encryption time, decryption time & throughput.

Predominance of Blowfish Over Triple Data Encryption Standard Symmetric Key Algorithm for Secure Integrated Circuits Using Verilog HDL

“…Blowfish algorithm is used more than AES due to its large key length and high security. It provides high throughput compared to other algorithms considered in this research work [18,21] …”

“…The last option is having 56 key bits as same as DES but used thrice in the algorithm because of all three keys are equal and prediction can be done easily. It is a symmetric key block cipher [16]. It is less secured than AES.…”

“…It's faster than TDES and AES [15] [17]. It's a replacement for DES algorithm [16] [4] [10]. Blowfish algorithm is used more than AES due to its large key length and high security.…”

“…Each processing round consists of four steps, i.e., substitute bytes, shift rows, mix columns and add round key. AES encryption is flexible, more secured and fast [14] [20] [16]. It is a popular and secured encryption algorithm in the industry compared to DES [9] [12], but it is prone to side channel attacks.…”

“…Performance metrics are analyzed such as Security, Complexity, propagation delay, and throughput of Blowfish Algorithm. Hardware implementation of blowfish algorithm on FPGA using VHDL which yielded reduced propagation delay and enhanced throughput [6,18] Conjugate-structure algebraic CELP coding method is used in speech encryption using Blowfish algorithm. A new method for generating S-boxes and P-arrays which are the main building blocks of the Blowfish algorithm is proposed which reduces time, complexity and provides more security [8].…”