tsrCert: Traceable Self-Randomization Certificate and Its Application to Blockchain Supervision

• DOI: 10.26599/tst.2023.9010053
• Publication Date: 2023-07-28T17:34:50Z
• Authors: Yan Zhu; Haibin Zheng; Bo Qin; Wanting Fu; Zhenwei Guo; Yujue Wang; Qianhong Wu; Bingyu Li; Xuan Ding
• Keywords: Traceability; Certificate; Authorization certificate; Implicit certificate

Traditional public key infrastructure (PKI) only provides authentication for network communication, and the standard X.509 certificate used in this architecture reveals user's identity. This lack of privacy protection no longer satisfies increasing demands personal privacy. Though an optimized anonymous PKI realizes anonymity, it has potential to be abused due identity tracking. Therefore, maintaining a balance between user anonymity traceability become requirement current PKI. paper introduces novel traceable self-randomization scheme based on that achieves both traceability. We propose short randomizable signature. Specifically, users can randomize initial into multiple certificates keys by themselves under premise traceability, which possesses lower computational complexity fewer interactive operations. Users exhibit different attributes scenarios, randomizing do not necessarily need displayed. Through security performance analysis, we demonstrate suitability improved practical applications. Additionally, provide application proposed permissioned blockchain supervision.