Confidentiality & Authentication Mechanism for Biometric Information Transmitted over Low Bandwidth & Unreliable channel

The security of bio-metric information - finger print, retina mapping, DNA mapping and some other chemical and biological modified genes related information - transfer through low bandwidth and unreliable or covert channel is challenging task. Therefore, Security of biometric information is essential requirement in this fast developing communication world. Thus, in this paper, we propose efficient and effective mechanism for confidentiality and authentication for biometric information transmitted by using arithmetic encoding representation over low bandwidth and unreliable channel. It enhances the speed of encryption, decryption and authentication process. It uses arithmetic encoding scheme and public key cryptography e.g. modified version of RSA algorithm called RSA-2 algorithm.

💡 Research Summary

The paper addresses the problem of protecting biometric data—such as fingerprints, iris scans, and DNA profiles—when it must be transmitted over low‑bandwidth, unreliable, or covert channels. The authors propose a multi‑layered security framework that combines data compression, public‑key encryption, key exchange, and message authentication.

The workflow begins with user registration, where each participant receives a unique identifier (ID) and password. The biometric sample is first converted into a decimal integer representation. This integer stream is then fed into an arithmetic coding algorithm. In this step the sender defines a probability model for each digit; the algorithm iteratively narrows the interval