ISSN: 2265-6294

Improving Security through Image based Three Level Authentication Using SHA256 and Huffman Coding Algorithm for Web Based Applications

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Dr. G. Murali , Dr. Saidaiah Bandi

Abstract

This article discusses a cutting-edge three-level authentication system designed to elevate the security paradigm for user access controls. The initial level employs conventional passwords, establishing a foundational layer for user authentication. Building upon this, the second level introduces an additional safeguard through one- time passwords (OTPs) sent to users registered email addresses. Following the successful completion of the first two levels, users progress to the third tier, where they engage in a unique authentication process. In this final stage, users select two personalized images in a specific sequence, contributing to a robust defence mechanism against unauthorized access. By amalgamating the strengths of traditional passwords, email-based OTPs, and personalized image sequencing, this approach aims to significantly fortify security measures, providing a resilient defence against potential threats in the digital landscape.

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