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Standards Development
This document provides general descriptions and specifications of anonymous entity authentication mechanisms based on blind digital signatures.
Anonymous entity authentication is a special type of entity authentication. In an anonymous entity authentication mechanism, given a message that was generated during the authentication protocol, an unauthorized entity cannot discover the identifier of the entity being authenticated (the claimant). At the same time, an authorized verifier can obtain assurance that the claimant is authentic.
ISO/IEC 20009-1 already specifies a general model and framework for anonymous entity authentication, and ISO/IEC 20009-2 standardizes a first type of such schemes from group signatures.
The goal of the intended new part is to specify another approach for achieving the properties set out in ISO/IEC 20009-1, by leveraging blind signatures as defined in ISO/IEC 18370. This type in particular subsumes Microsoft’s U-Prove scheme which has already been tested in different real-world applications.
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