传统的版权保护和内容认证技术是密码技术和数字签名技术。
The traditional techniques of copyright protection and content authentication are cryptology technique and digital signature technique.
数字水印技术的应用除了版权保护，还包括内容认证、隐蔽通信和数据嵌入等等很多方面。
Applications of watermarking include not only copyright protection, but also document authentication, covert communications and data embedding, etc.
提出了一种基于交换加密技术的安全公平买方-卖方水印协议，用于保护数字内容版权。
Taking advantage of the commutative encryption, the proposed buyer-seller watermarking protocol is secure and fair to both sides in digital copyright protection.
应用推荐