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

摘要

Computer data communication is the order of the day with Information Communication Technology (ICT)playing major role in everyone’s life, communicating with smart phones, tabs, laptops and desktops usinginternet. Security of the data transferred over the computer networks is most important as for as anorganization is concerned. Hackers attempt hard to crack the software key and indulge in cyber crimes. Inthis paper, the main concern is not only to provide security to the data transferred at the software level butit provides the security at hardware level by the modified Blowfish Encryption and Decryption Algorithms.It results minimum delay, high speed, high throughput] and effective memory utilization compared toBlowfish (BF) and Triple Data Encryption Standard (TDES) algorithms. The implementation of Blowfishwith modulo adder and Wave Dynamic Differential Logic (WDDL) is to provide security againstDifferential power analysis (DPA). In the proposed four implementations, BF with constant delay n-bitadder (BFCDNBA) yielded minimum delay, maximum frequency, high memory utilization and highthroughput compared to BF with modulo adder and WDDL logic (BFMAWDDL), BF with modulo adder(BFMA) and TDES algorithms. The VLSI implementation of Blowfish and TDES algorithms is done usingVerilog HDL.