Parallel DES with modified mode of operation

Abstract

In this paper, we tried to model parallel version of Data Encryption Standard (DES) by means of the modified mode of operation. Block size specifications followed by DES have been adopted too. Design configuration has shown serialized intermediate key generation and parallelized operations on plaintext blocks, which indicate faster encryption as compared to the standard one. We have performed various statistical tests suggested in the literature for conforming security of the proposed model. Also, case studies on potential vulnerabilities have been shown. Comparative analysis with the standard DES has revealed that the proposed parallel DES is more secure due to inter-block data dependency of keys and serialized decryption besides faster encryption. We have concluded our work with future directives.