一种安全可行的数字水印协议

针对已提出的数字版权维护协议中存在的买方频繁参与交易，以及过多第三方参与的问题，提出一种安全高效的数字水印协议。该协议引入具有同态性的Paillier加密算法以及虹膜识别技术，解决了匿名、未绑定、盗版追踪等相关安全问题。并且交易过程中参与方之间的通信数据均采用加密、数字签名认证等形式表示，以确保通信数据的保密性与完整性。除此之外，买方选用交易应用程序完成信息传递、购买的操作，使得协议更加贴近日常的交易模式，易于实现。

A Safe and Feasible Digital Watermarking Protocol

Considering the problems of the frequent participation of buyers and the involvement of too many third parties in current digital copyright protection protocols, a secure and efficient watermarking protocol is proposed. This protocol utilizes the homomorphic Paillier encryption algorithm and the iris recognition technology to solve the anonymity problem, unbinding problem, piracy tracing problem and some other relevant secure problems. In addition, to ensure the confidentiality and completeness of the communication data, the communication data between the participants in the transaction are expressed in the forms of encryption, digital signature authentication and so on. The buyers select the trading application to finish the operations of information transmission and purchase, which makes this protocol closed to the daily trading model and easy to realize as well.