원문정보
초록
영어
S-box mainly plays the role of confusion in the encryption process as an important component. For the new encryption algorithm PRESENT proposed in 2007, S-box impacts on the security of the encryption algorithm directly. This paper briefly describes the process of PRESENT algorithm and proposes an improved S-box to solve the problem that the original PRESENT S-box has anti-fixed point. Then a random PRESENT encryption algorithm based on dynamic S-box is proposed. The dynamic multiple S-boxes technology is used to implement random PRESENT algorithm, to enhance the security of the cryptographic algorithm. Finally, the security analysis is done, and it suggests that dynamic S-box has a superior ability to resist differential attack and linear attack. By comparison to the diffusion rate of original PRESENT S-box, our dynamic S-box has better avalanche effect.
목차
1. Introduction
2. Present
3. S-boxes Improvement Ideas
3.1 Improvement of the PRESENT S-box
3.2 Performance and Testing
4. Dynamic S-box Design
5. Dynamic S-box Analysis
5.1 Security Analysis
5.2 Test and Comparison of Cryptographic Properties
6. Conclusions
Acknowledgements
References