Multi-level Graphical Password Authentication Scheme for Cloud (MGPASC)
Vijayakumari Rodda1, Gangadhara Rao Kancherla2, Basaveswara Rao Bobba3

1R. Vijayakumari, Department of Computer Science, Krishna University, Machilipatnam, Andhra Pradesh, India.
2G. Gangadhara Rao, Department of Computer Science and Engineering, Acharya Nagarjuna University, Guntur, Andhra Pradesh, India.
3B. Basaveswara Rao, Department of Computer Science and Engineering, Acharya Nagarjuna University, Gubtur, Andhra Pradesh.

Manuscript received on 15 August 2019. | Revised Manuscript received on 25 August 2019. | Manuscript published on 30 September 2019. | PP: 278-283 | Volume-8 Issue-3 September 2019 | Retrieval Number: C4135098319/19©BEIESP | DOI: 10.35940/ijrte.C4135.098319
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Abstract: The usage and management of information technology resources and services are revolutionized with the arrival of Cloud Computing. But, the revolution always comes with problems. Authentication is one such problem. Especially for Graphical Password Authentication System, there is a threat of shoulder surfing attack. This research presents a multi-level graphical password authentication mechanism by extending an existing method. UGPSCCCT (User guided Graphical Password Scheme for Cloud using Caesar Cipher Technique) is the existing method and this method is extended in this paper such that another level of security is added. The user credentials in this method are transmitted to the server in encryption format. A key is generated for every login to encrypt user details. The analysis of the proposed method is done by calculating the computational cost and communication cost of the proposed method.
Keywords: Authentication, Graphical Password, Encryption, Communication Cost, Computation Cost.

Scope of the Article:
Wireless Communication