Research And Implementation Of User Key Privacy Information Protection Technology Based On Blockchain

Privacy information leakage has always been a huge problem in the Internet platform,which not only causes harassment and confusion to users,but also negatively affects the platform.At present,although the existing privacy protection technology can solve the problem of some privacy information leakage to a certain extent,there are still some problems,such as the third-party platform to keep privacy data,the lack of credibility,the lack of user's independent access to personal privacy data management,some data have different privacy levels.In recent years,blockchain technology is another emerging technology after artificial intelligence,big data and cloud computing.Its principle of asymmetric encryption cryptography and smart contract functions provide new ideas to solve the above-mentioned privacy leakage problems.Based on this,on the basis of blockchain technology,this paper proposes a new method to protect user's key privacy information,which is composed of two methods:RSA layered encryption of key privacy data and automatic access control management under smart contract.Based on this theoretical research,the second-hand car transaction platform based on blockchain is designed and implemented The effectiveness of the proposed method is verified by the final function test and performance test.The research in this paper shows that the combination of blockchain technology and user key privacy information protection can effectively and reasonably solve the problems that the above privacy protection technologies are difficult to solve,and realize the classified encryption protection and automatic approval access rights of users' privacy information in the Internet platform,which has certain innovation and contribution.In the future,we can do further research on improving the data processing efficiency of the blockchain privacy data protection platform,deepening the depth of data interaction between the blockchain and the system,optimizing the business logic,and improving the system integration.