A Confusable Anonymous Authentication Method

Abstract

The invention relates to a confusing anonymous authentication method, which is used to protect the user's identity information and private authentication key in the authentication system. The authentication system is provided with a system administrator and a tracker, and the system administrator is configured with a global public parameter, master key and key pair for linear encryption and decryption, the system user is configured with a private authentication key, and the anonymous authentication method is specifically: the system user obfuscates the private authentication key to obtain the obfuscation key; The system user generates an authentication array containing service requests based on the obfuscated key, and sends it to the server; the server verifies the validity of the authentication array and verifies the liveness of the system user; The system users who have passed the verification provide the service corresponding to the service request; when any of the legality verification and liveness verification fails, the tracker will track the corresponding system user. Compared with the prior art, the present invention has the advantages of traceability and low attack success probability.

Description

Technical field[0001]The present invention relates to the field of cryptography, anonymous authentication, and confusion, in particular, involving a confusing anonymous authentication method.Background technique[0002]Anonymous Authentication (AA) is a authentication method based on digital signature and can provide anonymity. In recent years, a series of anonymous authentication programs have been proposed in various applications. Traditional anonymous authentication usually has the following properties: 1) Certification / correctness, 2) Unable totrurability, 4) Unsciousness, 5) Anonymity, 6) Unable to litability, 7) Conditions Traceability. An anonymous authentication method can be based on different signatures such as: Blind sign name, loop signature, tracking signature, group signature, and more.[0003]In a conventional anonymous authentication scheme, the user's private authentication key is often used directly to generate a user's authentication request, which requires a critic...

AI Technical Summary

Problems solved by technology

Obfuscation transformation provides a conversion mechanism to keep the function of the converted program unchanged, but at this time the program or its decompiled results are difficult to understand and analyze

Images