一個以後門赫序函數運算之高效率電子現金系統

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一個以後門赫序函數運算之高效率電子現金系統

An Efficient E-cash Scheme Based on Trapdoor Hash Function

陳皇佑 , Masters　　Advisor：楊伏夷　　

繁體中文

電子現金交易系統；盲簽章；行動裝置；有後門的赫序雜湊運算； E-cash system ； Mobile ； Trapdoor hash function ； Blind signature

Abstract │ Reference (18) │ Altmetrics

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Due to the fast progress of networking technologies, many advanced network services have been proposed in literature to take the advantages of these technologies. E-cash system has surfaced as one of the key element for modern e-marketplaces. E-cash exchange system replaces the actual cash, and can be readily tradable on the internet. The consumers can traceable every commerce record from bank’s database. This paper would purpose a secure and fair E-cash system with related cryptography technologies, so that consumers can assure security.
    RSA blind signature technology used in our protocol to keep users’ anonymity and non-traceability. For example, when the bank or anyone who receive an amount of e-cash, it is not possible to trace back such amount’s original owner or other information. The date attachment technology can allows the merchants and banks to track each e-cash transaction with the appendix date and time, while remaining the anonymity of the original e-cash applicant.  
    We used the trapdoor hash function technology in our protocol. The system can discriminate on-line and off-line computation. Large amount of computation, such as signature generation and authentication can be made in the off-line, while the on-line computation only required one integer multiplication. In comparison to other existing protocol, our scheme has better on-line computation efficiency, which means the improvement makes our scheme suitable in wireless environment.

Reference ( 18 ) 〈TOP〉

[1]D. Chaum, “Blind Signatures for Untraceable Payments”, Advances in Cryptology - CRYPTO’82, Springer- Verlag, pp.199-203.
連結：
[2]C. I. Fan, W. K. Chen and Y. S. Yeh , “Date Attachable Electronic Cash”, Computer Communications, Vol. 23, No. 4, pp. 425-428, 2000.
連結：
[3]C. C. Chang and Y. P. Lai (2003), “A flexible Date-attachment Scheme on E-cash”, Computers & Security, Vol. 22, No. 2, pp. 160-166.
連結：
[4]W. S. Juang (2007), “D-Cash: A Flexible Pre-paid E-cash Scheme for Date-attachment”, Electronic Commerce Research and Applications, Vol. 6, No. 1, pp. 74-80.
連結：
[6]A. Shamir and Y. Tauman, “Improved online / offline signature schemes,” Advances in Cryptology-CRYPTO’01, LNCS 2139, pp. 355-367, 2001.
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