基于身份认证的买方-卖方数字水印协议

摘要

鉴于目前协议中存在的身份认证、版权追踪、买卖方工作量过大等问题，提出了一个基于身份认证的数字水印协议。在协议中引入了可信第三方，减少了买卖方的工作量；由第三方进行水印加载和数字作品的分发，有效防止了水印信息的滥用。同时，在水印中加入身份认证信息，并将各实体信息及时间戳放入一个安全的数据库中以便查询，在版权追踪时能更高效、准确地确认版权所有者。%In light of the problems existing in current protocols, such as identity authentication, copyright tracking, excessive workload of buyer and seller, a digital watermarking protocol based on identity authen-tication is proposed in which a trusted third-party is introduced to decrease the workload of buyer and sell-er. Watermark embedding and digital products distribution by the third party could effectively prevent the a-buse of watermarking information. Meanwhile, the adding of identity authentication information to the wa-termark, and furthermore, the storing of entity information and a timestamp in the secure database for later query could provide more efficient and accurate determination of copyright owner in copyright tracking.