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Abstract
Cloud computing is one of the emerging technologies, that takes network users to the next level. Cloud is a technology where resources are paid per usage rather than owned. One of the biggest challenges in this technology is Security. Though users use service provider’s resources, there is a great level of reluctance from users’ end because of significant security threats packed with this technology. Research in this core has provided a number of solutions to overcome these security barriers; each of these has its own pros and cons. This paper brings about a new model of a security system where in users are to provide multiple biometric finger prints during enrolment for a service. These templates are stored at the cloud provider’s end. The users are authenticated based on these finger print templates which have to be provided in the order of random numbers that are generated every time. Both finger prints templates and images provided every time are encrypted for enhanced security. When working with credit card transaction SSO solutions allow users to sign on only once and have their identities automatically verified by each application or service they want to access afterwards. We build on proxy signature schemes to introduce the public key cryptographic approach to single sign-on frameworks, which represents an important milestone towards the construction of provably secure single signon application for online transaction.