The certification reliability is improved in this system. Meanwhile, the video block encryption algorithm and watermark are also used in this method to ensure the security.
该方法通过视频分块加密算法和添加水印的方式确保了安全性。
参考来源 - 基于互联网的PC视频内容保护方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
然后对矢量量化形成的码书分块加密；
Then the codebook that is generated by vector quantization is blocked and encrypted;
结合加密技术与图像处理算法，提出了一种类似于公开密钥体制的基于分块dct变换的数字图像自适应水印算法。
In this paper, a block based adaptive watermarking technique in DCT domain that is similar to the public key system is proposed in light of the cryptography technique and image processing technique.
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