A SECURE GRAPHICAL AUTHENTICATION SYSTEM USING WATERMARK EMBEDDING

Computer Science And Engineering

NATIONAL CONFERENCE ON TECHNOLOGICAL ADVANCEMENTS IN ENGINEERING

Nowadays the most popular method for User Authentication is using Textual Password. This method has many drawbacks like dictionary attack, brute force attack etc. A secure text based password must be made using a combination of uppercase, lowercase, and special characters. Users have a tendency to choose weak text-based passwords, which are short and easy to remember. To overcome the drawbacks of text-based passwords, many picture-based passwords have been proposed. Picture based password systems often suffer from several problems, one of them is the shoulder surfing attack, ie ,images that users choose as password are both easy for an attacker to watch by snooping over shoulders or by using a camera to record input and also predictable. An authentication system called PassMatrix is used to overcome the shoulder surfing attack. User has to choose images as their password during the registration phase and choose a pass-square per image. To secure the pass-images from the attackers, Generic Visible Watermark Embedding technique is used to blend a cover image and a pass-image..This method can be extended to secure web applications by using QR code.

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