基于椭圆曲线加密技术的数字水印方案研究

根据椭圆曲线加密技术和数字水印技术的有关理论，阐述密钥和嵌入水印密钥的概念，提出了一种基于椭圆曲线加密技术的数字水印隐藏系统方案，并采用小波变换技术设计了数字水印的嵌入过程。对水印信息进行椭圆曲线加密技术预处理，将图像进行离散小波变换，然后选取图像小波变换的低频逼近系数完成水印嵌入。理论分析和实验结果表明，设计的数字水印系统具有较好的安全性，对叠加噪声、JPEG压缩等具有较好的鲁棒性。

Study of a digital watermarking scheme based on elliptic curve cryptography

According to the elliptic curve cryptography theory and digital watermarking technique theory, this paper presents the concepts of secret key and watermarking-embedded key. By using wavelet transform theory, a digital watermarking hiding system based on elliptic curve cryptography theory is proposed. Watermarking information is preprocessed with elliptic curve encryption technique. And image is decomposed using discrete wavelet transform technique. Then, low-frequency approximating coefficients is selected ...