计算机网络技术和多媒体技术的迅猛发展，使得图、文、声、像等多种媒体信息在网络中迅速传输，然而，网络在提供信息共享，为人们带来便捷的同时也存在很多安全隐患。信息安全研究领域出现的信息隐藏技术解决了密码技术无法解决的网络上流量分析式攻击问题，该文重点综述了信息隐藏技术的研究背景与国内外的研究现状。%The technology of computer network and multi-media is rapidly expanding,the informa-tion of photoshop,word,sound and picture have rapidly transferred in the Internet. The developing Internet provides the quick and convenient service for people, but it also brings many security problems. The in-formation hiding technique which acts as a new security technology in the field of information security solves network attack of traffic analysis that the cryptography can’t. The paper summarizes the background of research and the situation in home and abroad academe about information hiding.
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