Intelligent medical system data encryption based on improved AES algorithm
Xuefei Zhang, Yujie Zhang · 2024
Improving the data encryption of AES algorithm in the smart medical system is a key technology designed to protect the security and privacy of medical data. The new scheme of AES generation. After analyzing the problems of the existing S box, Based on the construction principle of the S box and the cryptographic properties, By adjusting the number of affine transformations and increasing the complexity of the affine transformation matrix, Further confusion ounding the generated S box, A new S-box is constructed; besides, In the round-key-plus phase, Generate random sequence columns using the squared residual algorithm, Replace the round key in the generation by using the generated random sequence columns, Thus generating a new round-key, The comparison of the generated new S box with AES S box and other improvements in nonlinear properties, extenability of the key, confused rows of the key, etc., result display, Improved AES algorithm has better nonlinear properties, extensibility and confounding, Can effectively resist algebraic attacks.