Estimations on the Security Aspect of Brand's Electronic Cash Scheme

In Crypto’93, Stefan Brands [1] proposed a very efficient off-line electronic cash. Then, the subsequent researchers such as Ernest Foo [2,3], WK Yip [4] and Yiannis [5] developed their schemes based upon Brands model [1] to improve Brand’s efficiency. In this paper, we demonstrate the feasibility of attacks on Brands scheme’s security aspect. By our attacks presented here, we conclude the security aspect of [1,2,3,4,5] has been defeated by us. Although we address here that Brand’s security aspect need to be further investigated, but the anonymous feature in Brand’s scheme [1] remain significant contributions to electronic cash, especially for privacy reason.

• Type: Conference
• Year: 2005
• Where: AINA
• Authors: Chang Yu Cheng, Jasmy Yunus, Kamaruzzaman Seman
• Keywords: AINA 2005, Computer Networks, Electronic Cash, Off-line Electronic Cash, Security Aspect