信息隐藏安全性研究

指出信息隐藏安全的必要条件和主要因素，给出信息隐藏安全性度量指标。根据信息隐藏通信模型，从信息隐藏的原理和面临的威胁方面分析信息隐藏安全性，给出各要素对信息隐藏安全的影响，指出载体信息、秘密信息、隐藏密钥的保密性是隐藏系统安全的必要条件，隐藏密钥的强度是制约其安全的主要因素。从抵抗攻击的角度提出用不可感知性、抗提取性、鲁棒性作为信息隐藏安全性度量指标。

Research on Security of Information Hiding

This paper points the necessary conditions and main facts of information hiding security, and proposes the measurement guidelines of information hiding security. Based on the communications model of information hiding, it analyzes the security of information hiding both from the principle and threaten encountered, and gives out how all elements of the information hiding system influence its security, indicating that the securities of carrier message, hidden message and steganography key are necessary conditions of information hiding security, even the intensity of steganography key is its main fact, as imperceptibility, extractable resistance and robustness are its measurement guidelines in the view of resist attacks.