Title :
A provably secure and practical fair E-cash scheme
Author :
Lian, Bin ; Chen, Gongliang ; Li, Jianhua
Author_Institution :
Sch. of Inf. Security Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
By analyzing some current fair E-cash schemes, we find they are not always “fair” or “practical”. So we present a new scheme based on group signature with the problems solved. In our improved E-cash system, bank performs “double-spending owner tracing” and trusted authority performs “unconditional owner tracing” and “unconditional coin tracing” when necessary. Then we provide security proofs of our scheme under standard assumptions.
Keywords :
digital signatures; electronic money; double-spending owner tracing; group signature; practical fair e-cash scheme; security proofs; trusted authority; Computers; Cryptography; Equations; Observers; Probabilistic logic; Protocols; E-cash; group signature; knowledge signature; provably secure;
Conference_Titel :
Information Theory and Information Security (ICITIS), 2010 IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6942-0
DOI :
10.1109/ICITIS.2010.5689448
