Journal of Algorithms and Computation
Open Access

Use of Digital Image Watermarking to Enhance the Security of Graphical Password Authentication

Document Type : Research Paper

Authors

Saeid Sadeghi 1
Kooroush Manochehri 2
mohsen jahanshahi 3

1 Department of computer engineering, Islamic azad unievrsity (central branch), Tehran, Iran

2 Department of computer engineering, Amirkabir university of Technology, Tehran, Iran

3 Department of Computer Engineering.Software, Islamic Azad University, Central Tehran Branch, Tehran,Iran

https://doi.org/10.22059/jac.2021.81653
Abstract
There are several techniques for implement an authentication system for computers that most commonly use the clear text password. One of the security problems is the use of a text password, the lack of choosing a complicated password by users due to forgetting, and being guessable and retrieved by attackers. One of the methods for passing text passwords is the use of graphical password authentication systems that increase the amount of forgetting passwords by using images instead of text characters. In this paper, the security challenges of using a graphical password are discussed. Then, explain a method for using the watermarking digital image for the authentication process and providing an algorithm suitable for watermarking and enhance the security of graphical password authentication system, and its quantitative and qualitative security parameters will be examined.

Keywords

Digital Image
Watermarking
Graphical Password
Computer Security
Authentication
Journal of Algorithms and Computation
Volume 53, Issue 1
June 2021
Pages 165-180

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