Abstract

This research proposes a hybrid security model for the secure transmission of patients' health data in telemonitoring systems, integrating cryptography and steganography. This dual-layer defense safeguards patient health data effectively. However, specifying the application point within the telemonitoring system—comprising data collection, transmission, and storage stages—allows for a focused, efficient, and tailored implementation of security measures based on each stage's unique characteristics. The proposed technique utilizes Hill Cipher for cryptographic processes, incorporating secure key exchange. Steganography employs LSB image steganography to conceal encrypted data within a randomly chosen image. The embedded data can be retrieved using steganographic techniques and decrypted at the receiver's end with Hill Cipher decryption using a private key. This crypto-stegano technique proves effective in mitigating security concerns, offering a promising solution for safeguarding confidential medical information during telemonitoring data transmission.