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... apply tosmany other information sources on the internetswhere vendors want to charge for content [1,6].sAn alternative approach is a micropayment model. There are several approachessto micro-payment =-=[4,5,7,8,9]-=- - we outline thesbasic interactions of the NetPay model weshave developed. Figure 1 (b) outlines the keysinteraction use cases for this scenario. Thesuser first goes to a broker and purchases “Ecoins...

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...Possible micro-payment interaction model. Fig. 1. Two on-line newspaper interaction scenarios An alternative approach is a micro-payment model. There are several approaches to micro-payment [5], [6], =-=[8], [9-=-], [10]. We outline the basic interactions of our NetPay model [2]. Fig. 1 (b) outlines the key interaction use cases for this scenario. The customer first goes to a broker and purchases “E-coins”...

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...ds charging for site content on the Internet [2] in order for companies to make direct profits from information they provide, rather than relying on fickle or insufficient on-line advertising revenue =-=[9, 10]-=-. For example, many sites have become subscription-only access e.g. on-line newspapers, academic and trade periodicals, help and advice columns, and so on. Subscription has the disadvantage of locking...

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...s importance of the problem, research on these issues has largely been product and technology driven. It has focused on specific solutions, either from the perspective of the solution inventor, e.g., =-=[20]-=- or the financial services industry, e.g., [21, 22]. Wright [34] focused on six generic PS, in terms of six features that, he argued, were of concern to transaction parties. Little research, e.g., [23...

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...nterestingsway of encouraging contribution via “token” exchanges(e-coins) which may or may not be translated into realsmoney.sKey requirements for P2P micro-payment systems aresgenerally agreed to be =-=[7]-=- [8] [11]:s• Security of the electronic coins (“e-coins”) from bothsfraud and double-spending by customerss• Ideally anonymous like traditional cash – payer andspayee should not reveal identities to a...

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...d an article, song or clip-art and only pay a small amount of money e.g. 1c, 2c, 10c or 20c on a pay-per-use basis. Key requirements for such micro-payment systems are generally agreed to be [9] [11] =-=[13]-=- [24]: • Ease of use for customers, ideally requiring nothing but point-and-click to purchase • Security of the electronic coins (“e-coins”) from both fraud and double-spending by customers • Ideally ...

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...d an article, song or clip-art and only pay a small amount of moneyse.g. 1c, 2c, 10c or 20c on a pay-per-use basis. Key requirements for such micro-payment systems aresgenerally agreed to be [9] [11] =-=[13]-=- [24]:sx Ease of use for customers, ideally requiring nothing but point-and-click to purchasesx Security of the electronic coins (“e-coins”) from both fraud and double-spending by customerssx Ideally ...

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...sing their certificates for secure communications between them, e.g., Transport Layer Security (TLS) [16]. We only consider conceptual payment procedures. Other ideas such as a micro-payment scheme =-=[17]-=- may be integrated into our scheme for practical payment purposes. IV. PROPOSED SCHEME The DRM interoperability problem cannot be solved without the participation of the DRM technology providers and c...

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...col. Although the proposedsprotocol adopts asymmetric cryptography (e.g. RSA) whose computation time consumed is slower 150stimes and 1500 times than those of symmetric cryptography and hash function =-=[19, 20]-=-, our protocolsrequires neither certificate authority (CA) nor hash function, whose computation time consumed can besneglected by comparing with Chien’s and Hwang’s protocol. Furthermore, in Fig. 6 we...