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A new buyer-seller watermarking protocol is proposed by applying a double encryption method and a novel mechanism of embedding a buyer's watermark. The protocol can effectively prevent against collusion attacks and the man in the middle attack if the third party is not trusted. Also, based on the proposed scheme for the first-hand transaction, a new buyer-reseller watermarking protocol and a formal multi-party watermarking protocol are also proposed. The proposed buyer-resell watermarking protocol only needs the original seller to provide transfer certificate and encryption-decryption service to support the second-hand transaction, and the multi-party watermarking protocol with distributed certificate authorities can overcome the difficulty in the combination of multicast mechanism with multiple unique watermarks and allow a seller to multicast the watermarked digital contents and key transaction information to n buyers. Furthermore, the idea of zero knowledge proof is also applied into the proposed scheme to allow the seller to take an effective control on the task performed by the third party. 相似文献
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伦敦奥运逼近,紧张备战的除了运动员,还有各路赞助商。1984年诞生于洛杉矶奥运会的奥运赞助“TOP模式”,被誉为近30年来最成功的商业营销案例之一。2 相似文献
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累计飞行里程,拥抱夏日和海滩,勾画地图上心仪的目的地,搜索惊心动魄的攻略,打造自己的“lonelyplanet”,这是旅行的一种意义。
旅行的另一种意义这样被诠释:美国金融巨鳄罗杰斯曾经阐释过自己的投资理念——在旅行中投资。 相似文献
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累计飞行里程,拥抱夏日和海滩,勾画地图上心仪的目的地,搜索惊心动魄的攻略,打造自己的“lonelyplanet”,这是旅行的一种意义。
旅行的另一种意义这样被诠释:美国金融巨鳄罗杰斯曾经阐释过自己的投资理念——在旅行中投资。 相似文献
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