Due to the fast progress of the internet technologies, electronic commerce becomes
more and more popular. Many people and businesses deal with their transactions via the
internet. The technologies of credit cards, electronic tickets, e-cash, and other advanced services
have realized the vision of electronic commerce. In this thesis, we propose an off-line
e-cash scheme with anonymity, untraceability, double-spending checking, and traceability.
Anonymity and untraceability must be possessed in any e-cash scheme. In an off-line e-cash
scheme, the bank or the third party (TTP) must be able to revoke the anonymity of a user who
doubly spent her/his e-cash(s). In our proposed e-cash scheme, the bank can fast derive the
identity of the user who doubly spent her/his e-cash(s) without the participation of TTP. If
some illegal transactions are reported, TTP can also directly revoke the anonymity of the user
who spent her/his e-cash(s) in the illegal transactions. In addition, the police needs to trace
a specific user in some situation, and we propose a process to satisfy this requirement,called
traceability.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0825109-012834 |
| Date | 25 August 2009 |
| Creators | Yu, Yao-chun |
| Contributors | D. J. Guan, Chung-Huang Yang, Chun-I Fan, Wen-Shenq Juang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0825109-012834 |
| Rights | campus_withheld, Copyright information available at source archive |
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