Analysis of Open Environment Sign-In Schemes-Privacy Enhanced & Trustworthy Approach

The third party based authentications possess users' privacy concerns in an open environment such as links and traces user identities across various services. The cryptographic schemes for selective discloser of user information cannot adopt in practices, the common digital signature scheme public key have similar problem. In addition, trustworthy online computing formation is an important advance in security research that aims to use trusted computing remote attestation to overcome trust creation issues. In this paper, the authors propose a privacy enhanced and trustworthy authentication scheme, with underlying sign-in protocol solution for an open environment that guarantees users' privacy using blind signature scheme to be anonymous and unlinkable during sign-in to the third party service 'Identification Service Provider' (ISP).