Design of a Power Randomization Circuit for Block Ciphers

摘要

To improve the anti-Power Analysis Attack ability of Block Ciphers, we summarized the research status of anti-attack technology. Starting with Mask Technology, the concept of Random Interleaving is put forward and its key property is proved. Based on the basic method of inserting random number, a Power Randomization circuit structure is designed and applied to the AES-128 algorithm circuit as an example. Finally the design of this paper is verified from three aspects. The results show that the algorithm circuit with this structure can correctly complete the encryption function, the ability to resist Power Analysis Attack has been significantly improved, and the circuit performance is good.