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.
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.
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.
RSA算法是基于数论的公开密钥密码体制。
The RSA algorithm based on the number theory is one of the public key encryption.
根据非线性动力学中的混沌理论设计了一种混沌序列密码，利用该序列密码与RSA公开密钥算法构造了一种新的混合密码体制。
In this paper, a new chaos stream cipher was proposed based on the chaos theory of nonlinear dynamics. Combining this stream cipher with RSA algorithm, we construct a new hybrid cryptosystem.
根据非线性动力学中的混沌理论设计了一种混沌序列密码，利用该序列密码与RSA公开密钥算法构造了一种新的混合密码体制。
In this paper, a new chaos stream cipher was proposed based on the chaos theory of nonlinear dynamics. Combining this stream cipher with RSA algorithm, we construct a new hybrid cryptosystem.
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