中文摘要：

网络信息有3类,分别用于描述客观世界、记录人类行为、描述虚拟世界.现有信息隐藏技术大多以第1类信息为载体,以轻微修改载体数据的方式进行隐蔽通信,并保证感知逼真与统计逼真.该文在总结载体修改式信息隐藏的基础上,重点探讨以后两类信息为伪装的非载体修改式的新型信息隐藏方法,介绍了适合于特定载体类型的半构造式信息隐藏、完全构造式信息隐藏及行为信息隐藏的基本形式与代表性方法.信息隐藏的形态在新的网络环境下将不断发展变化,各种信息媒介均可作为秘密信息的伪装,因此努力开展新型信息隐藏研究将大大有助于占据新时期信息战的主动地位.

英文摘要：

Data in cyber-space can be classified into three categories：data for describing objective world,data for recording human behaviors and data for describing virtual world.While current steganographic techniques mainly use the first class of data for hiding secret information,this paper surveys new steganographic techniques using the latter two categories of data as the camouflage,including semi-creative steganography,creative steganography and behavior steganography.Basic concepts and representative methods of the new types of steganography are described.With the development of information and network technology,the new paradigm of digital steganography deserves intensive studies in the future.