Abstract: Aiming at the low efficiency in current architectures of digital watermarking, it provides a new architecture—asymmetric digital watermark. This architecture has the third trusted party as the center. And by using two watermarks(secret watermark and public watermark)and “watermark browser”, users can independently extract and display the intellectual property information hidden in the digital multimedia. It not only makes the intellectual property information public, but also highly improves the efficiency. In the results, this architecture can protect the intellectual property of creators, avoid users from unauthorized use, and regular the authentication and the management of the intellectual property.

Key words: digital watermark, symmetric system, asymmetric system, third trusted party, secret watermark, public watermark

摘要： 针对当前的数字水印实施架构中存在的低效问题，提出了一种新的架构——非对称数字水印。该体制以第三信任方为中心，通过使用二次水印(秘密水印和公开水印)和“水印浏览器”，使版权信息的提取与显示均可在用户端独立完成。在版权信息“公开化”的同时，极大地提高了整个架构运作的效率。该体制既保护了商家的版权利益，又使用户避免了非授权使用的问题，同时对版权的认证和管理也起到了规范化的作用。

关键词: 数字水印, 对称体制, 非对称体制, 第三信任方, 秘密水印, 公开水印