Design of Health and Medical Data Privacy Encryption Control System Based on Blockchain Technology
Aiming at the problems of the health and medical data privacy encryption control system,such as high access delay growth rate,large ciphertext and low data security factor,a health and medical data privacy encryption control system based on block-chain technology is designed.The client/server(C/S)architecture is adopted to design a 4-layer encryption control system hardware based on blockchain technology.In the system software design,the content extraction signature scheme based on certificateless public key system is adopted to encrypt private data.Blockchain technology is introduced to design the data encryption access control method MDACSC,which applies the post-order traversal policy tree matching algorithm and classification attribute algorithm to access the control structure,and complete the encrypted access control of health and medical data.The PoP-DPoS algorithm is used to improve the consensus mechanism and optimize the encryption control method.After experimental testing,it achieves the encryption control of health and medical data privacy,and the experimental results demonstrate that the proposed model has a lower growth rate of access delay and stable and efficient access control performance,the ciphertext size is small,and the encryption cost is low,while the de-cryption cost is extremely high.Furthermore,the data security coefficient reaches 0.98,indicating that the system has a good appli-cation effect.
blockchain technologycertificateless public key infrastructurehealth and medical dataDPoS algorithmprivacyencrypted access control
万方数据
维普
