Anonymous Authentication in the SAML 2. 0 Protocol Based On Algebraic MAC

In this paper, the Security Assertion Markup Language (SAML) protocol is analyzed and the existing privacy leakage problems are pointed out. A method for anonymous authentication in the SAML 2. 0 protocol proposed by adding a lightweight Attribute-based algebraic MAC (Message Authentication Code) anonymous credential solution. Due to the anonymity and security of the authentication solution, both the identity provider and the service provider can not be traced back to the real name of the pseudonym, so as to realize the protection of users' privacy data.Experiments show that the method we design is feasible and computationally efficient.