Peer to Peer 型電子クーポンシステムにおける仲介者識別のためのキュー型配布履歴記録方式

概要

論文の詳細を見る
An incentive attached peer to peer (P2P) electronic coupon system is proposed in which users forward e-coupons to potential users by providing incentives to those mediators. A service provider needs to acquire distribution history for incentive payment by recording UserIDs (UIDs) in the e-coupons, since this system is intended for pure P2P environment. This causes problems of dishonestly altering distribution history.In order to solve such problems, distribution history is realized in a couple of queues structure. They are the UID queue, and the public key queue. Each element of the UID queue at the initial state consists of index, a secret key, and a digital signature. In recording ones UID, the encrypted UID is enqueued to the UID queue with a new digital signature created by a secret key of the dequeued element, so that each UID cannot be altered. The public key queue provides the functionality of validating digital signatures on mobile devices. This method makes it possible both each UID and sequence of them to be certificated.The availability of the method is evaluated by quantifying risk reduction using Fault Tree Analysis (FTA). And its recognized that the method is better than common encryption methods.
社団法人電気学会の論文
2005-06-01