• Mutyam Bindu Priya
• Rakesh Balaga
• Badugu Hema Sai
• Sandanam Satish Kumar

In e-healthcare system, an increasing number of patients enjoy high-quality medical services by sharing encrypted personal healthcare records (PHRs) with doctors or medical research institutions. However, one of the important issues is that the encrypted PHRs prevent effective search of information, resulting in the decrease of data usage. Another issue is that medical treatment process requires the doctor to be online all the time, which may be unaffordable for all doctors (e.g., to be absent under certain circumstances). In this paper, we design a new secure and practical proxy searchable re-encryption scheme, allowing medical service providers to achieve remote PHRs monitoring and research safely and efficiently. Through our scheme DSAS, (1) patients' healthcare records collected by the devices are encrypted before uploading to the cloud server ensuring privacy and confidentiality of PHRs; (2) only authorized doctors or research institutions have access to the PHRs; (3) Alice (doctor-in-charge) is able to delegate medical research and utilization to Bob (doctor-in-agent) or certain research institution through the cloud server, supporting minimizing information exposure to the cloud server. We formalize the security definition and prove the security of our scheme. Finally, performance evaluation shows the efficiency of our scheme.

1.Encrypted Personal Healthcare Records (PHRs) 2. Proxy Searchable Re-encryption 3. Privacy and Confidentiality4.Remote Monitoring5. Cloud Server

"HARNESSING BLOCKCHAIN TO EMPOWER PATIENTS IN MANAGING THEIR HEALTH RECORDS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 12, page no.b359-b371, December-2024, Available :http://www.jetir.org/papers/JETIR2412132.pdf

"HARNESSING BLOCKCHAIN TO EMPOWER PATIENTS IN MANAGING THEIR HEALTH RECORDS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 12, page no. ppb359-b371, December-2024, Available at : http://www.jetir.org/papers/JETIR2412132.pdf