What is information camouflage technology?

As a new information security technology, information camouflage technology has been applied in many fields. Generally speaking, according to the different processing objects, it should include superposition technology, digital watermarking technology and voice replacement technology. : 1. Overlay technology If you need to send a text to a friend through the network, you can use overlay technology to hide it in several landscape paintings, so that it can be transmitted safely. The reason why superposition technology is used in information transmission is because there is no need for any complicated password calculation when recovering secret images. 2. As a new technology to protect copyright in the open network environment, digital watermarking can establish the owner of copyright, identify buyers or provide other additional information about digital content, and embed these information into digital images, digital audio and video sequences in an invisible way for confirming ownership and tracking behavior. In addition, digital watermarking also has broad application prospects in data hierarchical access, evidence tampering identification, data tracking and detection, commercial and video broadcasting, Internet digital media service payment and authentication in e-commerce. Contrary to camouflage technology, the information hidden in watermark can resist all kinds of attacks. Even if the watermarking algorithm is public, it is difficult for attackers to destroy the watermark. 3. Sound replacement technology is very similar to superposition technology. It changes the original object and content by processing the sound information, so as to achieve the purpose of hiding the real sound information. Voice replacement technology can be used to make a secure telephone, which can keep the communication content confidential. In recent years, due to the rapid development of network communication, many large foreign companies such as IBM and NEC are engaged in research and development in this field, and some software for information hiding and analysis has also been commercialized. Therefore, we believe that in the near future, information camouflage technology will be widely used in civil and commercial applications, and its application prospect can be said to be immeasurable. (Liu Jie)