For example, numeric watermark technique can realize multimedia right control and network business right protection problems in which the cipher technique especially the public cipher technique that process multimedia right protection security protocols takes on favorable performance. 如通过数字水印实现多媒体内容版权控制,还有网络商务版权保护问题,其中基于密码技术特别是公钥密码技术的多媒体内容版权保护安全协议表现出了良好的性能。
Techniques such as Numeric watermark, security container and security protocol which process the multimedia numeric right protection are primarily studied by people all along. 长期以来,以数字水印、安全容器、安全协议等方式进行多媒体内容版权保护得到了广泛的研讨。