This paper examines cooperative relay networks for physical layer security, utilising amplify-and-forward (AF) and decode-and-forward (DF) protocols in the system. We looked at how likely it is that the hybrid decode and forward (HYDF) wireless cooperative relay network would go down and discovered that the proposed DPSBR scheme does better than the SPSBR scheme in terms of both OP and SOP. The relay nodes serve as reliable and collaborative entities that enhance the security and dependability of the communication system. Mathematical models precisely predict outage probability based on system parameters, including transmit power, channel conditions, and the number of relay nodes. The analytical results provide valuable insights into the security performance of the cooperative relay network, with a focus on physical layer security. However, in a single relay environment, we incorporate distance parameters and path loss exponents. Our proposed model outperforms the AF-DF. OP-SOP schemes concerning, secrecy capacity and analysis have been verified for accuracy through Monte Carlo simulations.

Electronic health record (EHR) provides us medical information about the patient and provides the overall history of the individual. EHR works automatically. It gives access to health records and workflow of physician. Authentication, timeliness and accessibility to information between doctors and patients are also maintained by this healthcare cryptosystem. The strong cryptosystem consists of doctors' and patients' authentic interaction. Hence, we propose trilinear pairing-based cryptosystem security and authentication using elliptic curve cryptography (ECC) and elliptic curve discrete logarithm problem (ECDLP) techniques. Our proposed model authenticates the patients and doctors by key sharing, transmission and authentication to secure the healthcare system. The analysis outcome shows in the performance, accuracy, time and attacks.