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信息隐藏是信息安全领域的一个重要方面 ,它与信息加密技术相结合增强了现有系统的安全性 ,但对于信息的完整性验证并没有相应的措施。文章介绍了对现有信息隐藏系统模型的攻击形式 ,指出加入认证理论的必要性。在此基础上 ,详细介绍了认证理论和技术 ,并把认证理论用于信息隐藏系统 ,提出了加入认证理论的信息隐藏系统模型 ,并实现了一个基于该模型的信息隐藏系统。测试表明 ,系统具有较好的隐藏性和完整性。
Information hiding is an important aspect in the field of information security. Combining with information encryption technology enhances the security of existing systems, but there is no corresponding measure for the integrity verification of information. The paper introduces the attack on the existing information hiding system model and points out the necessity of adding authentication theory. On this basis, the authentication theory and technology are introduced in detail, and the authentication theory is applied to the information hiding system. The information hiding system model which incorporates the authentication theory is proposed and an information hiding system based on the model is realized. Tests show that the system has good hiding and integrity.