A Simplified Policy Modification Framework By External provider For Human Medical Record Sharing

The great flexibility and accessibility of cloud computing make it a good fit for storing and managing Personal Health Records (PHR), which are often large and complex datasets. Personal health data, on the other hand, include incredibly sensitive and private information, which raises serious security and privacy concerns. There should also be a flexible and secure access plan for PHR owners' outsourced data. Although Some business cloud platforms offer symmetric or public key encryption as an add-on feature, these conventional encryption techniques are not well-suited for data outsourcing due to the high overhead of key management and maintenance. We create and put into practise a secure, granular access control system with minimal policy modifications for outsourced PHRs. On top of AES and Cypher Text encryption, our suggested method is constructed. In order to provide comprehensive policy change tracing, a policy versioning system is also presented. In the conclusion, we evaluated the effectiveness of the suggested scheme by analysing its performance.