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.

youdao

密码技术的飞速发展，特别是公开密钥密码体制的提出，为信息安全提供了最强有力的保护。

The cryptology, especially the public - key cryptology can offer the highest level of information security.

youdao

随着密码技术的飞速发展，特别是公开密钥密码体制的提出，为信息安全提供了最强有力的保护。

With the rapid progress of cryptology, especially the public-key cryptology can offer the most effective level of information security.

youdao