Secret document steganography and extraction method suitable for wireless communication environment

Abstract

The invention provides a secret document steganography and extraction method suitable for a wireless communication environment. A steganography method comprises the steps of secretly writing a secret document into a real-time speech data which are streams with a plurality of bytes, and rewriting the last bit of pseudo-random S bytes in every R-byte speech data into a binary coding of the secret document, wherein every R-byte speech data can be embedded into S-bit data, the speech data totally have S / 8 bytes, and S / 8 bytes of secrete information is transmitted to the other person involved when every R-byte speech data are transmitted through a communication system. An extraction method comprises the step of extracting the binary coding embedded into the secret document by receiving the sent speech data and using an improved least significant bite (LSB) algorithm to obtain the secrete information sent by a sender. Due to the fact that the confidential information is hidden by means of a steganographic algorithm, even through lawless persons intercept communication information during communication, the lawless persons cannot obtain the secrete document secretly written in the communication information.

Description

technical field [0001] The invention relates to a technology field applicable to wireless communication security, in particular to a secret file steganography method and a method for extracting a secret file applicable to a wireless communication environment. Background technique [0002] With the continuous development of mobile communication technology and Internet technology and the continuous acceleration of people's life rhythm, people are more and more keen on using various electronic communication products to communicate and communicate with others. Wireless mobile communication has penetrated into people's work and life, bringing great convenience to people. But at the same time, there are various security issues. In the process of communication, the data transmission between the base station and the base station uses clear text, so criminals can intercept and eavesdrop on the communication data by some means. Since both the military market and the civilian market...

AI Technical Summary

Problems solved by technology

But it also has security risks to a certain extent:

[0004] (1) Traditional security risks: lawbreakers can intercept, tamper or forge communication signals, and can also locate communication locations;

[0005] (2) New security risks: 3G standardization leads to information security downgrade and hidden dangers of leakage of non-independent intellectual property rights in the encryption system

However, the security of this algorithm is too poor, and it is easy to be Detection and RS detection based on statistical methods, so the invention uses an improved LSB algorithm to avoid this detection

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