COVID-19 的大规模感染给人民生活造成了不便,比如就医难、医疗学术交流共享不便、医疗资源不平衡,从而衍生远程医疗.目前远程医疗数据仍然以集中式存储、互联网协议(Internet Protocol,IP)传输和签证机构(Certificate Authority,CA)颁发的证书为主,导致数据安全性低、网络通讯延迟和CA维护成本高.本文提出一种SMSSS-CA签名机制、智能合约和私有区块链解决CA维护成本高、医疗数据隐私泄露和安全性低的问题.此外,还提出命名数据网络(Named Data Network,NDN)集成星际文件系统(InterPlanetary File System,IPFS)、联盟区块链和智能合约,用来提高远程会诊时SMSSS-CA签名或验签时获取患者病例和共享会诊信息的响应速度和降低区块链传播开销.实验分别从NS3 和NDNSIM两种实验环境对比,结果表明,该方法比现有方案更安全和共享更及时.
Research on security methods of blockchain and IPFS telemedicine
The massive infection of COVID-19 has caused inconvenience to people's lives,such as the difficulty of seeking medical treatment,the inconvenience of medical academic exchanges and sharing,and the imbalance of medical resources,which has resulted in telemedicine.At present,telemedicine data is still mainly stored in centralized mode,transmitted over Internet Protocol(IP)and issued by Certificate Authority(CA),which leads to low data security,delayed network communication and high maintenance cost of CA.This paper proposes a SMSSS-CA mechanism signature,smart contract and private blockchain to solve the problems of high maintenance cost of CA and low privacy disclosure and security of medical data.In addition,the Named Data Network(NDN)is proposed to integrate InterPlanetary File System(IPFS),alliance blockchain and smart contracts to improve the response speed of obtaining patient records and sharing consultation information when the SMSSS-CA mechanism signs or verifies signatures during remote consultations,and reduce the blockchain propagation cost.Experiments were conducted to compare NS3 and NDNSIM experimental environments,and the results show that this method is safer and more timely than the existing schemes.
blockchainsignaturenamed data networksmart contract:telemedicineinterplanetary file system
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