Secure Information Hiding Technologies Based on Spread Spectrum Sequences with Good Correlation Properties

完全互补码是一种具有理想相关特性的扩频序列，我们利用它开发了信息隐藏技术。具体地，提出了使用图像数据的数字水印方案、数字指纹方案和隐写方案。这些方案的性能进行了评估，通过数值实验的秘密信息的透明性，提取的正确性和对各种攻击的鲁棒性。仿真结果表明，本文提出的方案比基于其它扩频序列的方法具有上级的优越性。

We developed information hiding technologies using complete complementary codes, one of the spread spectrum sequences with ideal correlation properties. Specifically, a digital watermarking scheme, a digital fingerprinting scheme, and a steganography scheme using image data are proposed. The properties of these schemes are evaluated through numerical experiments on the transparency of the secret information, correctness of the extraction and the robustness against various attacks. As a result, it is shown that the proposed schemes have superior to the method based on other spread sequences.