Concealed communication method

Abstract

The invention discloses a concealed communication method. The method comprises the following steps that encryption is performed on first original data on a sending end and a receiving end so as to form concealed information and generate a binary sequence of the concealed information, and the binary sequence is recorded as a sending-end original cipher; the binary sequence of the concealed information is converted into a sending-end Chinese character sequence and is sent to the receiving end; the receiving end receives the concealed information and carries out decryption. Through the above mode, by using the concealed communication method provided in the invention, a Chinese character coding is used to embed the concealed communication into a Chinese character; through analyzing the concealed information which needs to be transmitted, the concealed information is converted into English letters in a split-up mode and then are converted into a Chinese character; then the Chinese character is transmitted to a target site through forms of a mail, a webpage and a picture so that a purpose of transmitting the concealed information is reached. A concealed channel established by using the method possesses advantages of a high capacity and high concealed performance. In the method, the concealed information is packed and transmitted in a data portion of an IP data packet.

Description

technical field [0001] The invention relates to an information hiding method, in particular to a secret communication method. Background technique [0002] In modern society, with the development of network technology, communication between people has become more convenient. Information is becoming an important soft power that determines a country's national strength, and an important strategic resource for the development of a country's politics, economy, technology, and culture. Being able to grasp the latest news in a timely manner plays an irreplaceable role in improving national security and comprehensive national strength; however, issues such as important information leakage pose severe challenges to national security. Therefore, information security has received more and more attention in recent years. Hackers often use loopholes in network communication to carry out some illegal activities, such as stealing user data, destroying banking and financial systems, and ...

AI Technical Summary

Problems solved by technology

Using this method to construct a covert channel is very inefficient. Usually, each packet containing thousands of bytes or more can only transmit 1 bit of covert information. In addition, this method will affect the statistical characteristics of the hidden field domain, thus It is easy to detect the covert channel, so the concealment of this channel is greatly restricted

Therefore, the currently proposed covert channel technology mainly has two shortcomings of small capacity and poor concealment.

Images