Threshold signature based traceable anonymous authentication method and system
By separating the first and second part of the generated credentials, the privacy of the signer can be protected during public verification, while post-event accountability can be carried out when needed, thus solving the problem of balancing privacy protection and accountability in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WUHAN UNIV
- Filing Date
- 2026-05-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing traceable anonymized authentication methods based on threshold signatures struggle to balance privacy protection and post-event accountability. Traditional schemes include the actual signer's information in public signatures, leading to reduced privacy and increased attack risks.
The system employs a separate design to generate a first part of the credentials for public verification and a second part of the credentials for authorized tracking. An aggregator generates an aggregate signature and a tracking credential. The public verifier only verifies the validity of the aggregate signature, and the authorized tracker decrypts the tracking credential to restore the signer's identity when needed.
By protecting signer privacy and ensuring efficient verification in public verification, while also enabling post-verification accountability when necessary, the balance between privacy protection and accountability is resolved.
Smart Images
Figure CN122419792A_ABST