Secure communication system based on wireless channel characteristic

A wireless channel and secure communication technology, applied in wireless communication and key distribution, can solve problems such as storage management difficulties, achieve secure data communication, and avoid hidden dangers of leakage

Active Publication Date: 2013-01-09
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 m

Method used

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  • Secure communication system based on wireless channel characteristic
  • Secure communication system based on wireless channel characteristic
  • Secure communication system based on wireless channel characteristic

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Embodiment Construction

[0027] The present invention is applicable to any wireless communication mode, such as mobile communication, wireless local area network, wireless mesh network, wireless ad-hoc network and the like. The secure communication method and device based on wireless channel characteristics of the present invention utilize wireless channel state information to perform secure communication. In wireless communication, the communication parties first use the channel estimation module to perform channel estimation to obtain channel state information, use the quantizer to quantize the channel state information, and send instruction information according to the quantization result to achieve consensus negotiation. After consensus negotiation, the quantized bit sequence is amplified in secrecy and mapped to a phase key by a mapper. Finally, the phase key is used to rotate the phase of the transmitted symbol sequence to realize the physical layer encryption of the transmitted sequence. Due to...

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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...

Claims

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Application Information

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IPC IPC(8): H04W12/04H04L9/08H04W12/03H04W12/0431
Inventor 彭岳星吴晓华赵慧王文博
Owner BEIJING UNIV OF POSTS & TELECOMM
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