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研究生:柯博文
研究生(外文):Po-Wen Ko
論文名稱:電子禮券系統
論文名稱(外文):An Electronic Gift Certificate System
指導教授:陳建源陳建源引用關係
指導教授(外文):Chien-Yuan Chen
學位類別:碩士
校院名稱:義守大學
系所名稱:資訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:英文
論文頁數:38
中文關鍵詞:付款系統電子現金電子禮券
外文關鍵詞:payment systemselectronic cashelectronic gift certificate
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隨著網際網路的蓬勃發展,許多傳統的商業行為陸續地被移植至網際網路上。例如:電子投票、電子付款系統、電子競標等等。在這演進的過程中,難免會出現一些傳統方法所面臨的問題如:貨幣的偽造問題、冒領、支票跳票等諸如此類的犯罪問題,而這些問題也正是值得我們去探討研究的。此外,由於電子的機制與生俱來的特性就是容易拷貝和再使用,故因此如何設計出一安全又便利的電子付款系統實在是一件很重要的工作。
在現實生活中,禮券也是人們常用的付款機制中的一種,當人們要送禮物給朋友時,不知道要送什麼時,人們可以購買禮券,然後送給朋友由他們自己去購買。此外禮券也俱備了現金的一些特徵,因此對於要設計一個電子禮券系統,電子現金提供了一個很好的參考點。由於匿名與可轉移是禮券的主要特色,不幸地,在離線型之電子現金系統中滿足匿名的特性又具有轉移性之電子現金,是很難能夠偵測出雙重消費的。
在這論文中,我們提出一套具有不可偽造、不可追蹤、可轉移、可防止雙重消費和無陷害等性質之電子禮券系統。

Recently, network transaction has become more and more popular because of the rapid development of electronic commerce. Electronic transaction is the virtual manifestation of physical transaction. It endeavors to possess similar properties of the physical transaction. As traditional means of payment, electronic payment systems face on several problems: Money can be counterfeited, signature can be forged, and check bounce. Besides, electronic payment systems have an inherent limitation; they are easy to copy and reuse. Therefore, the security of the electronic payment system is very important.
In the real world, gift certificate is one kind of payment systems. It is convenient and friendly payment means. Various electronic cash schemes provide a good starting point to control fraud in e-coupons. However, there is no electronic gift certificate system satisfying physical gift certificate property.
In this thesis, we construct an electronic gift certificate system that endeavors to possess similar properties of the physical gift certificate. It has six properties: unforgeability, untraceability, anonymity of original user, transferability, against double spending and framing-freeness.

中文摘要 I
ABSTRACT II
ACKNOWLEDGEMENTS III
CONTENTS IV
LIST OF TABLES AND FIGURES V
CHAPTER ONE: Introduction 1
CHAPTER TWO: Reviews of Related Works 3
2.1 Survey of Electronic Cash Systems 3
2.1.1 Requirements of Electronic Cash Systems 4
2.1.2 History of the Electronic Cash Systems 5
2.2 The Schnorr Type Blind Signature 8
2.3 Proof of Equality of Discrete Logarithms 9
CHAPTER THREE: An Electronic Gift Certificate System 11
3.1 Purchase Protocol 13
3.2 Transference Protocol 14
3.3 Payment Protocol 15
3.4 Analysis 16
CHAPTER FOUR: Conclusions and Future Work 21
REFERENCES 22

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[32] http://www.e-coupon.com/
[33] http://www.fitness-connection.com/gift_certificate.htm

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