Publication Type
Conference Proceeding Article
Version
publishedVersion
Publication Date
2-2026
Abstract
The evolution of decentralized identity (DID) and self-sovereign identity (SSI) frameworks, as endorsed by W3C Verifiable Credentials (VC) and eIDAS 2.0, underscores the need for secure, efficient, and privacy-preserving credential management. However, existing credential systems often depend on centralized issuers, lack efficient aggregation mechanisms, or fail to ensure unlinkability across authentication sessions. To address these challenges, we propose DISC (Decentralized Identity System with Self-Sovereign Credential Aggregation), a novel credential system that enables multi-authority credential issuance, user-controlled credential aggregation, and unlinkable authentication. DISC allows users to aggregate credentials from multiple issuers while maintaining constant-size authentication tokens and supporting batch verification for scalable authentication. Additionally, DISC ensures unlinkability of aggregated authentication tokens, preventing verifiers from correlating sessions even when credentials share attributes. Security analysis proves DISC’s unforgeability, anonymity, and unlinkability, while experimental results confirm its efficiency in credential issuance, aggregation, and verification. Compared to existing schemes, DISC offers a scalable, privacy-preserving, and efficient decentralized identity solution, making it well-suited for real-world applications requiring secure and privacy-preserving identity verification.
Keywords
Decentralized identity, anonymous credentials, self-sovereign identity, self-sovereign aggregation, privacypreserving authentication, multi-authority credential issuance
Discipline
Information Security
Research Areas
Cybersecurity
Areas of Excellence
Digital transformation
Publication
33rd Annual Network and Distributed System Security Symposium, San Diego, California, February 23-27
First Page
12871
Last Page
12886
Identifier
10.1109/TIFS.2025.3635058
Publisher
The Internet Society
City or Country
USA
Citation
YANG, Yang; YANG, Guomin; LI, Yingjiu; WU, Pengfei; SHI, Rui; HUANG, Minming; WENG, Jian; Hwee Hwa PANG; and DENG, Robert H..
PriSrv+: Privacy and usability-enhanced wireless service discovery with fast and expressive matchmaking encryption. (2026). 33rd Annual Network and Distributed System Security Symposium, San Diego, California, February 23-27. 12871-12886.
Available at: https://ink.library.smu.edu.sg/sis_research/11065
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
https://doi.org/10.1109/TIFS.2025.3635058