An anti-power attack circuit design for block cipher

In order to improve the anti-power attack capability of the block cipher algorithm circuit, the concept of reverse interleaving is proposed based on the idea of masking technology. The key properties of reverse staggering are proved. An inverted interleaved circuit structure is designed, the timing alignment is disturbed by adding a first-level register, and an optimized circuit structure is obtained. The anti-energy attack capability of the algorithm is improved by power randomization. Finally, the structure is applied to the AES-128 algorithm circuit and verified by encryption, decryption, protection and computational performance. The results show that the circuit structure designed in this paper can be correctly encrypted and decrypted, and has better protection effect and computing performance.