An Optimistic Fair Exchange Protocol for Trading Electronic Rights

Terada, Masayuki; Iguchi, Makoto; Hanadate, Masayuki; Fujimura, Kikuo

doi:10.1007/1-4020-8147-2_17

Cited by 11 publications

(13 citation statements)

References 11 publications

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“…1) Billing device B U runs a fair exchange protocol [18], [19] dishonestly). The reason why a fair exchange protocol is used here instead of just exchanging payment and receipt notices is to avoid the risk of double payment; if the fairness of exchanging b H and its receipt d bH is not assured, it is possible that b H will remain although the payment was completed successfully, and could be paid again at the next payment time.…”

Section: C N }mentioning

confidence: 99%

Sound Marketization of User-Generated Content based on a Fair Micro-Billing Scheme

Terada¹,

Noaki²,

Sekino³

2013

JSW

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User-generated content (UGC) is one of the most promising services. Most UGC items are currently being distributed for free due to the lack of a suitable compensation system. This inability to compensate the creators stands in the way of UGC becoming a mature service with sustainable and sound growth. The current schemes used to charge for (professional) digital content are inadequate for UGC, since UGC is distributed through a different value-chain that dispenses with the selection processes of publishers and distributors found in the conventional value-chain for distributing professional works, and thus the quality of content is quite uneven. Such high quality unevenness greatly increases the user’s risk of buying a pup, and turns the UGC market into a Akerlof’s lemon market, where the quality of merchandise enters a death-spiral until the market collapses. This paper comprehensively examines the ability of monetization models to remunerate creators of UGC, and proposes a smartcard-based fair micro-billing scheme that will activate the UGC market. The proposed scheme enables users to pay for content in a “bit by bit” manner, and thus significantly reduces the user’s content quality risk as well as the “freeride” risks for creators. This paper also shows that the proposed scheme can be implemented securely and feasibly by using current smartcards

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Section: C N }mentioning

confidence: 99%

Sound Marketization of User-Generated Content based on a Fair Micro-Billing Scheme

Terada¹,

Noaki²,

Sekino³

2013

JSW

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“…Billing device B U runs a fair exchange protocol [8,11] to exchange payment bH with corresponding receipt token d b H , which represents the acceptance that bH has been transferred, with H's payment receiver device RH . To prevent forgery of…”

Section: Payment Of Charged Feesmentioning

confidence: 99%

“…If this fails, the exchange is aborted (RH never receives bH in this case because of the fairness property of the fair exchange protocols) [2,11].…”

Section: Payment Of Charged Feesmentioning

confidence: 99%

Smartcard-based micro-billing scheme to activate the market for user-generated content

Terada

Noaki

Sekino

2010

Proceedings of the 4th International Conference on Uniquitous Information Management and Communication

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User-generated content (UGC) is one of the most promising near-term services. Most UGC are currently being distributed for free due to the lack of a suitable compensation system. This inability to compensate the creators stands in the way of UGC becoming a mature service with sustainable and sound growth. The current schemes used to charge for (professional) digital content are clearly inadequate for UGC, since UGC is significantly different from professional content, and users will hesitate to pay for the overhead costs imposed by professional content distribution channels. This may force the UGC market into becoming a lemon market, where most merchandise (i.e. UGC) is cheap but inferior in quality. This paper discusses measures to address this problem and proposes a solution, a smartcard-based microbilling scheme that will activate the market for UGC. Our proposal enables a user to pay for content on a per-play basis with minimal support costs; it greatly mitigates the risks of accessing UGC. This paper also shows that the proposed scheme can be implemented securely and feasibly by using current smartcards.

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“…We write h(M ) for the hash value of M , where h is a one-way secure hash function. A secure PKI infrastructure is also assumed to 5 Terada et al first presented a similar, but flawed, protocol in [20].…”

Section: Propositionmentioning

confidence: 99%

Optimistic Fair Exchange Using Trusted Devices

Dashti

2009

Lecture Notes in Computer Science

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Efficiency of optimistic fair exchange using trusted devices is studied. Pfitzmann, Schunter and Waidner (PODC 1998) have shown that four messages in the main sub-protocol is optimal when exchanging idempotent items using non-trusted devices. It is straightforward that when using trusted devices for exchanging nonidempotent items this number can be reduced to three. This however comes at the cost of providing trusted devices with an unlimited amount of storage. We prove that exchanging non-idempotent items using trusted devices with a limited storage capacity requires exactly four messages in the main sub-protocol.

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An Optimistic Fair Exchange Protocol for Trading Electronic Rights

Cited by 11 publications

References 11 publications

Sound Marketization of User-Generated Content based on a Fair Micro-Billing Scheme

Sound Marketization of User-Generated Content based on a Fair Micro-Billing Scheme

Smartcard-based micro-billing scheme to activate the market for user-generated content

Optimistic Fair Exchange Using Trusted Devices

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