Construction and Analysis of SHA-256 Compression Function Based on Chaos S-Box

IEEE Access

卷:9

Ge Liu¹  Yongqi Chen¹  Juan Wang²  Shu Wang³ 

[1] College of Electronic and Information Engineering, Heilongjiang University of Science and Technology, Harbin, China;

[2] College of Information and Communication Engineering, Harbin Engineering University, Harbin, China;

[3] State Grid Anshan Electric Power Supply Company, Anshan, China;

关键词: Hash function;    compression function;    chaotic S-box;    P-box;   

DOI  :  10.1109/ACCESS.2021.3071501

来源: DOAJ

【 摘 要 】

To further improve the security of SHA-256, a compression function construction scheme based on chaotic S-box is proposed. Through the reasonable design of the iteration mode and using the nonlinearity, confusion, and anti-difference of chaotic S-box, the relationship between the plaintext and the hash value becomes more complicated and unpredictable, by the diffusion of the linear transformation P-box, the dependence between the plaintext and the hash value is further improved. The compression function is applied to the SHA-256 Hash Algorithm to test and analyze the distribution, sensitivity, confusion, diffusion, and collision resistance, and compared with the original SHA-256 and the mainstream Hash Algorithms. The results show that the proposed scheme can effectively improve the collision resistance of the SHA-256 Hash Algorithm and enhance the stability of confusion and diffusion with fewer cryptographic components and lower operational consumption to provide more reliable security guarantee for its application.

【 授权许可】

Unknown