Partially Blind Threshold Signature Based on RSA

Article type: Research Article

Authors: Chien, Hung‐Yu | Jan, Jinn‐Ke | Tseng, Yuh‐Min

Affiliations: Department of Information Management, NanKai College, NanTou, Taiwan, ROC, e‐mail: [email protected] | Institute of Computer Science, National Chung Hsing University, Taichung, Taiwan, ROC | Department of Computer Science and Information Engineering, ChaoYang University of Technology, Taichung, Taiwan, ROC

Abstract: A partially blind signature scheme allows the signer to inoculate a non‐removable common information into his blind signature. This common information may represent the date or the amount of e‐cash. Due to its un‐traceablility and partial blindness property, the partially blind signature plays an important role in many e‐commerce applications. Based on the RSA scheme, we propose a partially blind threshold signature with low‐computational load for the client.

Keywords: cryptography, blind signature, e‐commerce

Journal: Informatica, vol. 14, no. 2, pp. 155-166, 2003