| The healthy growth of children is an important part of the realization of eugenics and eugenics.As a commonly used growth and development assessment tool,growth curve can dynamically and continuously track the growth and development of children,and has important reference significance for identifying abnormal conditions such as stunting in the process of children’s growth and development.There is a certain risk of privacy leakage in physiological data of growth and development,and the security and credibility of the system is very important.Based on the child growth curve,a set of child growth and development evaluation system is designed and implemented in this paper.A multi-party behavior supervision scheme based on block chain technology is constructed to reduce the risk of privacy leakage.The safe and reliable dynamic recording and evaluation of physiological parameters in the growth of children and adolescents are realized.This article mainly does the following work:(1)This paper analyzes the problems of children’s growth and development evaluation and privacy data disclosure in China.Combined with children’s growth curve and block chain technology,a safe and credible child growth and development evaluation system is proposed.(2)This paper designs a safe and reliable evaluation system for children’s growth and development,which mainly includes user-oriented Android client,cooperative hospital doctor Web and cloud server.Android client based on the Java language development,integrated the WHO、nine provinces and cities of children growth and development standards,to achieve the child growth parameters record,growth curve drawing,growth status evaluation and other functions.The Web end of the doctor is based on the development of Vue technology,so that doctors can remotely view the growth and development of children,and achieve a more accurate assessment of children’s growth and development.The cloud server is based on the SpringCloud framework to realize the cloud storage of children’s physiological data,and to provide background services for the Android client and the doctor Web.(3)Aiming at the privacy data disclosure problem,this paper designs a multi-party behavior supervision scheme based on block chain.By describing the model of supervision scheme,this paper introduces the mechanism of privacy protection——encapsulates the operation behavior of privacy data into behavior log,records it in block chain,and benefits from the non-tampering of block chain.The behavior log can be used to monitor the behavior of all parties.A blockchain network based on Hyperledger Fabric technology is implemented in this paper.The generation,storage and query methods of behavior log are designed,and the behavior log review function for ordinary users and the behavior log review function for reviewers are realized.(4)There is the possibility of tampering and contamination by malicious saboteurs in the chain process of behavior log.A encryption and decryption model based on ElGamal algorithm is designed in this paper,and the behavior of hijacker hijacking port pollution data and forwarding is simulated.After 30,000 tests,the defense success rate of the encryption and decryption model is 100%.In this paper,the child growth and development evaluation system is developed to realize the dynamic monitoring and evaluation of children’s growth and development.At the same time,a multi-party behavior supervision scheme based on block chain technology is introduced to reduce the risk of privacy data leakage and improve the security credibility of the system. |