A Novel Approach for Security Enhancement of Data Encryption Standard

作     者：Dawood Shah Tariq Shah Sajjad Shaukat Jamal Mohammad Mazyad Hazzazi Amer Aljaedi Adel R.Alharbi 

作者机构：Department of MathematicsQuaid-i-Azam UniversityIslamabadPakistan Department of MathematicsCollege of ScienceKing Khalid UniversityAbhaSaudi Arabia College of Computing and Information TechnologyUniversity of TabukTabuk71491Saudi Arabia 

出 版 物：《Computers, Materials & Continua》 (计算机、材料和连续体（英文）)

年 卷 期：2023年第75卷第6期

页      面：5073-5086页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Deanship of Scientific Research  King Khalid University  (R. G. P. 2/150/42) 

主　　题：DES S-box linear cryptanalysis differential cryptanalysis 

摘      要：Data Encryption Standard(DES)is a symmetric key cryptosystem that is applied in different cryptosystems of recent ***,researchers found defects in the main assembling of the DES and declared it insecure against linear and differential *** this paper,we have studied the faults and made improvements in their internal structure and get the new algorithm for Improved *** improvement is being made in the substitution step,which is the only nonlinear component of the *** alteration provided us with great outcomes and increase the strength of ***,a novel 6×6 good quality S-box construction scheme has been hired in the substitution phase of the *** construction involves the Galois field method and generates robust S-boxes that are used to secure the scheme against linear and differential *** again,the key space of the improved DES has been enhanced against the brute force *** out-comes of different performance analyses depict the strength of our proposed substitution boxes which also guarantees the strength of the overall DES.