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Unlinkable Divisible Electronic Cash [chapter]

Toru Nakanishi, Yuji Sugiyama
2000 Lecture Notes in Computer Science  
Recently, some divisible electronic cash (e-cash) systems have been proposed. However, in existing divisible e-cash systems, efficiency or unlinkability is not sufficiently accomplished.  ...  In [4] , as a variant of divisible e-cash systems, an electronic coupon (e-coupon) system is proposed.  ...  An Unlinkable Divisible Electronic Cash System In this section, an unlinkable divisible e-cash system is constructed by using the extension of the group signature scheme [8] , as well as the unlinkable  ... 
doi:10.1007/3-540-44456-4_10 fatcat:vb7z2qa6srdqtgfp53ltnzt2pq

Recent Advances in Electronic Cash Design [chapter]

Aline Gouget
2008 Lecture Notes in Computer Science  
Electronic cash (or e-cash) is an electronic payment solution that is usually viewed as an attempt to emulate electronically the main characteristics of regular cash.  ...  The main distinction of e-cash with respect to other electronic payment systems is that electronic coins are stored on a device controlled by the user, e.g. a smart card or a personal computer hard disk  ...  This scheme fulfills the anonymity and unlinkability properties usually required for electronic cash systems.  ... 
doi:10.1007/978-3-540-85893-5_22 fatcat:icn6a47o5rbjlhjckni6vo3mf4

Divisible E-Cash Systems Can Be Truly Anonymous [chapter]

Sébastien Canard, Aline Gouget
2007 Lecture Notes in Computer Science  
This paper presents an off-line divisible e-cash scheme where a user can withdraw a divisible coin of monetary value 2 L that he can parceled and spend anonymously and unlinkably.  ...  This is the first divisible e-cash scheme that provides both full unlinkability and anonymity without requiring a trusted third party.  ...  The first unlinkable divisible e-cash system that fulfills the usual properties of anonymity and unlinkability was proposed in [20] and improved in [19] .  ... 
doi:10.1007/978-3-540-72540-4_28 fatcat:e7shwalqfjabxhcux4y5qz462e

Secure Electronic Cash Scheme with Anonymity Revocation

Baoyuan Kang, Danhui Xu
2016 Mobile Information Systems  
There are a number of requirements for an electronic cash scheme, such as, anonymity, unforgeability, unreusability, divisibility, transferability, and portability.  ...  To contribute secure electronic cash schemes, we propose a new offline electronic cash scheme with anonymity revocation.  ...  For security and efficiency, there are a number of requirements for an electronic cash scheme, such as anonymity, unforgeability, unreusability, divisibility, transferability, and portability [2] .  ... 
doi:10.1155/2016/2620141 fatcat:coy7px5yfreqpg727mya62ufhq

Easy come — Easy go divisible cash [chapter]

Agnes Chan, Yair Frankel, Yiannis Tsiounis
1998 Lecture Notes in Computer Science  
Recently, there has been an interest in creating practical anonymous electronic cash with the ability to conduct payments of exact amounts, as is typically the practice in physical payment systems.  ...  The most general solution for such payments is to allow electronic coins to be divisible (e.g., each coin can be spent incrementally but total purchases are limited to the monetary value of the coin).  ...  It is apparent that the storage, computation and communication requirements of our scheme are minimal, resulting in the first anonymous, unlinkable divisible off-line electronic cash scheme that can be  ... 
doi:10.1007/bfb0054154 fatcat:2mvk7rapybbd3dfwiurzoqhbvy

An Efficient On-Line Electronic Cash with Unlinkable Exact Payments

T. NAKANISHI
2005 IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences  
Though there are intensive researches on off-line electronic cash (e-cash), the current computer network infrastructure sufficiently accepts on-line e-cash.  ...  For customers' privacy, the e-cash system should satisfy unlinkability, i.e., any pair of payments is unlinkable w.r.t. the sameness of the payer.  ...  Introduction To solve privacy problem in electronic payments, many electronic cash (e-cash) systems have been proposed.  ... 
doi:10.1093/ietfec/e88-a.10.2769 fatcat:gafg5idba5hfvc6ofypzvtond4

An Efficient Online Electronic Cash with Unlinkable Exact Payments [chapter]

Toru Nakanishi, Mitsuaki Shiota, Yuji Sugiyama
2004 Lecture Notes in Computer Science  
Though there are intensive researches on off-line electronic cash (e-cash), the current computer network infrastructure sufficiently accepts on-line e-cash.  ...  For customers' privacy, the e-cash system should satisfy unlinkability, i.e., any pair of payments is unlinkable w.r.t. the sameness of the payer.  ...  Introduction To solve privacy problem in electronic payments, many electronic cash (e-cash) systems have been proposed.  ... 
doi:10.1007/978-3-540-30144-8_31 fatcat:rwwbkgpqxrbzdb5hzccxhg3kmi

Transferable E-Cash Revisit [chapter]

Joseph K. Liu, Sandy H. Wong, Duncan S. Wong
2005 IFIP Advances in Information and Communication Technology  
Incorporating the property of transferability into an offline electronic cash (ecash) system has turned out to be no easy matter.  ...  In addition to it, we propose two e-check systems constructed using similar techniques to our e-cash system. One is as efficient as a single term ecash system and supports partial unlinkability.  ...  INTRODUCTION An electronic cash (e-cash) system provides a digital way to mint and transfer money, or so-called e-cash/e-coins.  ... 
doi:10.1007/0-387-25660-1_12 fatcat:briskntbzveundyut3sguqlwxi

An Efficient Divisible Electronic Cash Scheme [chapter]

Tatsuaki Okamoto
1995 Lecture Notes in Computer Science  
Recently, several "divisible" untraceable off-line electronic cash schemes have been presented [8, 11, 19, 201.  ...  Therefore, our "divisible" off-line cash scheme is more efficient and practical than the previous schemes.  ...  U chooses Efficient Divisible Cash Scheme This section outline the various protocols in our divisible electronic cash scheme.  ... 
doi:10.1007/3-540-44750-4_35 fatcat:pvxymb6lsbdcdnhwys7qqwhyku

Ownership-attached unblinding of blind signatures for untraceable electronic cash

C FAN
2006 Information Sciences  
to transform the blinded electronic cash into a valid one.  ...  In an untraceable electronic cash protocol based on blind signatures, an identified customer can withdraw a blinded electronic cash from the bank and the unblinding operation is adopted by the customer  ...  There are some other properties of electronic cash which have been discussed in the literature such as off-line double-spending checking for e-cash [6] , divisible e-cash [16] , ecash tracing for the  ... 
doi:10.1016/j.ins.2004.10.010 fatcat:2xwsppubqzdkpof464zhxfq54i

An Anonymous Mobile Payment System Based on Bilinear Pairings

Constantin Popescu
2009 Informatica  
In an electronic cash system, a user can withdraw coins from the bank and then spends each coin anonymously and unlinkably.  ...  Many electronic cash systems have been proposed with the proliferation of the Internet and the activation of electronic commerce.  ...  Their e-cash scheme provides traceable and divisible e-coins without a trusted third party.  ... 
doi:10.15388/informatica.2009.267 fatcat:b26wknc6uraw3o4nps3msaadiq

A Handy Multi-coupon System [chapter]

Sébastien Canard, Aline Gouget, Emeline Hufschmitt
2006 Lecture Notes in Computer Science  
A coupon is an electronic data that represents the right to access a service provided by a service provider (e.g. gift certificates or movie tickets).  ...  The usual properties of anonymity and unlinkability are fulfilled by these unlinkable divisible e-cash schemes.  ...  Contrary to the schemes mentioned above, the unlinkable divisible e-cash scheme requires a trusted third party.  ... 
doi:10.1007/11767480_5 fatcat:aab7tqhfbbf6zjls6dsiqukljm

Secure PC-Franking for Everyone [chapter]

Gerrit Bleumer
2000 Lecture Notes in Computer Science  
Our solution operates an existing offline e-cash scheme over certain elliptic curves rather than over finite fields. 1  ...  For electronic postage, however, a strong privacy requirement like indicia unlinkability is an interesting option.  ...  Frequent senders may use postal accounts, occasional senders may pay by credit card, debit card, wire, check or electronic cash.  ... 
doi:10.1007/3-540-44463-7_9 fatcat:dcnoc57t4neu5mobbmbgpu6n6m

Efficient Divisible E-cash based on the P Signature

Yanling Huo, Haibin Wang, Xuguang Chai, Xia Liu
2014 International Journal of Multimedia and Ubiquitous Engineering  
In 2000, Nakanishi and Sugiyama provided an unlinkable divisible electronic cash [6] by introducing a trusted third party.  ...  Okamoto and Ohata proposed the first ideal untraceable electronic cash [8] using the cut-and-choose methodology and introduces some basic properties, i.e., untraceability, transferability and divisibility  ...  INTRODUCTION Electronic cash (e-cash), introduced by Chaum, is an electronic analogue of physical money and has attracted a lot of researchers [5] .  ... 
doi:10.14257/ijmue.2014.9.10.16 fatcat:ga4oig6yovfqzct7wj2wonir64

How to Break Another "Provably Secure" Payment System [chapter]

Birgit Pfitzmann, Matthias Schunter, Michael Waidner
1995 Lecture Notes in Computer Science  
At Euroctypt '94, Stefan0 D'Amiano and Giovanni Di Crescenzo presented a protocol for untraceable electronic cash based on non-interactive zero-knowledge proofs of knowledge with preprocessing.  ...  Acknowledgment We thank Stig Mjdsnes for a discussion at Eurocrypt 94 where we already agreed that a cash system requiring occasional broadcast and cooperation of all honest users was not what one would  ...  Moreover, electronic cash systems differ a lot among themselves.  ... 
doi:10.1007/3-540-49264-x_10 fatcat:k3spdt6orrendjlpribuqs35fu
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