Network security plays a vital role in the protection of user's confidential information along with its identity verification. The process of verification of user's identity comes under the area of authentication. Traditional system applies authentication in one way or two way means which verifies the user and the provider's information before any service exchanges was performed. Single sign on (SSO) is one of such mechanism which allows the users to get access to their services by entering

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... r identity information only once in the system. During the last few years there are so many SSO models are suggested and applied for different types of applications and based on various signatures, cryptographic and digest approaches. But somewhere they lack in applying the access control in a granular manner. After in depth survey we have found that the traditional SSO is lacking in some areas like protection of cookies, cached data security, temporary storage protection and finally the dependencies on only credential's information for authentications. Thus, this work proposes an enhanced SSO based multi-factor authentication for getting the things right according to the user and provider with fewer efforts. We have suggested an continuous bit sequence based certificates based on SSO using some of the additional management schemes. Along with the certificate format, its sequence, transmission information, its protection pin. Thus the complete solution will deals with increasing the protection of overall system by securing the temporary data, cookies and their logs so as to prevent fabrication, modification and eaves dropping attacks.