Secure Communication System Based on Wireless Channel Characteristics

Abstract

The invention discloses a secure communication system based on a wireless channel characteristic. The system comprises a first communication terminal and a second communication terminal which communicate with each other, wherein the first communication terminal and the second communication terminal transmit data which comprise a pilot frequency sequence to each other; and the first communication terminal comprises a first channel estimation module, a first quantization module, a first negotiation module, a first confidential amplification module, a first phase rotation secret key mapping module and a first phase rotation encryption module. By the system, secure data communication is realized.

Description

technical field [0001] The invention relates to the communication field, in particular to a safety communication system based on wireless channel characteristics. Background technique [0002] With the rapid development of computer and communication technology, wireless communication network has become a research hotspot and the most rapid growth point in the field of communication, accompanied by the security problems it faces, which must also be solved. [0003] Because the channel of wireless communication is open, the user can roam, and the security threat of the wireless communication system is far greater than that of the wired communication system. Intruders can easily intercept wirelessly transmitted information without being detected. If the transmitted information is not well protected, it will easily cause information leakage. The data security mechanism in the current wireless communication system is based on the encryption technology of cryptography, that is, t...

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Problems solved by technology

If the pre-allocation is fixed, because each pair of communication parties must use a key different from the other group, when the number of network members increases, the number of keys will increase quadratically, and storage management will be very difficult; and if redistribution during communication , a secure communication channel is required to establish a shared secret key, and such a secure channel is almost impossible in wireless communication

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