Title: Differential cryptanalysis on DES cryptosystem up to eight rounds

Authors: Vikas Tiwari; Ajeet Singh; Appala Naidu Tentu

Addresses: C.R. Rao Advanced Institute of Mathematics, Statistics and Computer Science, University of Hyderabad Campus, Hyderabad 500046, India ' C.R. Rao Advanced Institute of Mathematics, Statistics and Computer Science, University of Hyderabad Campus, Hyderabad 500046, India ' C.R. Rao Advanced Institute of Mathematics, Statistics and Computer Science, University of Hyderabad Campus, Hyderabad 500046, India

Abstract: Differential cryptanalysis is considered as a powerful technique in the field of cryptanalysis, applied to symmetric-key block ciphers. It is a kind of chosen plaintext attack in which the cryptanalyst has some sets of the plaintext and the corresponding ciphertext pairs of his choice. These pairs of the plaintext are related by a constant difference. Generally, it is the analysis of how differences in input information can affect the resultant difference at the output. In this paper, we present step by step implementation of differential cryptanalysis of data encryption standard (DES) up to 8-rounds.

Keywords: block cipher; data encryption standard; DES; differential cryptanalysis; key schedule algorithm; substitution permutation network; SPN.

DOI: 10.1504/IJIPSI.2019.103560

International Journal of Information Privacy, Security and Integrity, 2019 Vol.4 No.1, pp.1 - 29

Received: 12 Jun 2018
Accepted: 22 Mar 2019
Published online: 11 Nov 2019 *