Abstract: A new asymmetric public key digital watermarking algorithm for still images was presented. The private key was embedded into the watermark, the public key was used to decrypt and detect. The results show that the attacker removed watermark without adequate information of the public key and private key. The image would be geometric deformation, and could obtain information of attacks from the image geometric distortion.

Key words: Watermarking, Image processing, Asymmetric publickey communication, Geometrical transformations resistance, Encryption

摘要： 摘 要:  提出一种新的针对静止图像的非对称公钥数字水印算法, 将私有密钥嵌入到水印中, 用公共密钥进
行解密和检测。研究了攻击者在不知道公共密钥和私有密钥的条件下删除水印的情况, 结果表明图像会因受到攻
击而发生几何变形, 从几何失真的图像中可以获取攻击信息。

关键词:  数字水印, 图像处理, 非对称公钥通信, 抗几何变换, 加密