Three Tier Security Schemes in Wireless Sensor Networks with Mobile Sinks Using Grid

Abstract: Personal health record (PHR) is associate degree rising patient-centric model of health info exchange, th at is usually outsourced to be hold on at a 3rd party, like cloud suppliers. However, there are wide privacy considerations as personal health info might be exposed to those third party servers and to unauthorized parties. To assure the patients‟ management over access to their own PHRs, it\'s a promising technique to inscribe the PHRs before outsourcing. Yet, problems like risks of privacy exposure, measurability in key management, Easy access and user Interaction made simple, have remained the foremost necessary challenges toward achieving fine-grained, cryptographically implemented information access management. During this paper, we have a tendency to propose a unique patient-centric framework and a collection of mechanisms for information access management to PHRs hold on in semi-trusted servers. To realize fine- grained and climbable information access management for PHRs, we have a tendency to leverage attribute primarily based encoding (ABE) techniques to inscribe every patient‟s PHR file. Totally different from previous works in secure information outsourcing, we have a tendency to concentrate on the multiple information owner state of affairs, and divide the users within the PHR system into multiple security domains that greatly reduces the key management complexness for homeowners and users. A high degree of patient privacy is warranted at the same time by exploiting multi-authority ABE. Our theme additionally permits dynamic modification of access policies or file features, provides finest demanding needs for user/attribute revocation and break-glass access underneath emergency situations. Intensive analytical and experimental results area unit given that show the safety, measurability and efficiency of our planned theme.

Keywords: Personal health account, cloud computing, data privacy, fine-grained right to use control, characteristic- based encryption