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Original Research


K. S. TAMILKODI 1, and Dr. N. RAMA 2.

Vol 18, No 12 ( 2023 )   |  DOI: 10.5281/zenodo.10276427   |   Author Affiliation: Associate Professor, Computer Science, Presidency College (Autonomous), Chennai 1; Principal, Quaid – E – Millath Government College for Women (Autonomous), Chennai 2.   |   Licensing: CC 4.0   |   Pg no: 1-13   |   Published on: 04-12-2023


Just a few years ago, Alexa, ChatGPT, Driverless cars, UAV (Unmanned Aerial Vehicle), Telemedicine, Telesurgery, and so forth were undemonstrative and unapproachable and they were part of science fiction magazines or movies. Today, the rapid advancement of technology transformed individuals' living standards forcefully to a great extent. With the revolution of ICT (Information and Communication Technology), Telemedicine offers remote health care services like Teleconsultation, Teledermatology, Telecardiology, Telepsychiatry, and so on to protect lives or identify ailments. In order to obtain the best services from Telemedicine, the patients, and doctors who reside in geographically separated locations should be authenticated. Telemedicine is a remote access solution that allows patients to connect to any doctors or hospitals around the world within a few seconds by clicking a button. While utilizing it, patients can transfer health-related files and medical images. Compromise of these medical images could affect patient privacy and the exactness of the identification of diseases. Authentication is the most important part of any communication system to secure sensitive information against compromising security goals like confidentiality and integrity. Login credentials (the 'User ID' and 'Password') with the CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart), is considered the most common authentication method. Afterward, a number of Biometric authentication techniques were recommended by the researchers. REACT is a novel hybrid authentication method in which both text and image-based passwords are used. In REACT, biometrics (fingerprint/face/iris/ear) can also be used as cryptographic keys to verify their authenticity and prevent unauthorized access. Chaotic maps are used to encrypt these keys and exchange them between the patient and physician before the actual medical image transmission. REACT is a variant of the Diffie-Hellman key exchange algorithm and it considers important attributes like password update, session key agreement, and mutual authentication. Security analysis exhibits that REACT can withstand known attacks and is efficient in terms of authentication.


Telemedicine, Biometrics, Authentication, Chaotic Maps, Image-Based Password.