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Method for generating random number in cognitive radio network and communication key generation method

A technology of cognitive wireless network and communication key, which is applied in the field of key generation based on the random number to achieve high security effect

Inactive Publication Date: 2011-02-23
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]two. Wireless Network Security Issues
This easily leads to fake base stations

Method used

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  • Method for generating random number in cognitive radio network and communication key generation method
  • Method for generating random number in cognitive radio network and communication key generation method
  • Method for generating random number in cognitive radio network and communication key generation method

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Embodiment Construction

[0041] 1. Theoretical basis

[0042] Key generation is generally divided into two steps: random number generation and random number-based key generation. The generation of random numbers is the core part of information encryption, such as identity authentication, key generation, management, etc., all use random numbers. Random numbers are divided into pseudo-random numbers and true random numbers, but no matter what random number generation method is used, a good random source is the basis for generating a good random number. The random source refers to the signal source used to generate random numbers. It is also called an entropy source in informatics. It is non-deterministic and ensures the unpredictability of random numbers.

[0043] Cognitive wireless networks are different from traditional networks in that they have "cognitive capabilities", that is, terminals with cognitive capabilities can perceive the environmental information around them, and can adaptively reconfig...

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Abstract

The invention belongs to the technical field of security of a cognitive radio network, in particular to a novel random number generation method and a random number-based key generation method. The method comprises the following steps of: generating a random number in a security certificate mechanism based on spatial position information and peripheral blank frequency spectrum information of a terminal node, and asymmetrically encrypting the random number to acquire a related primary key; encrypting the primary key to acquire a key AK with random length; and generating various communication keys according to the key AK and a List 1 and a List 2 of the terminal node. The generated random number is difficult to decrypt; the primary key and the AK key generated by using the random number havehigher security; and management keys, unicast keys and multicast keys also use the position information and frequency spectrum information recorded by the terminal, so the keys are secure under the condition that the spatial position information and / or peripheral blank frequency spectrum information of the terminal is unexposed.

Description

technical field [0001] The invention belongs to the technical field of cognitive wireless network security, and in particular relates to a new random number generation method and a key generation method based on the random number. Background technique [0002] one. Cognitive Wireless Networks and Spectrum Sensing [0003] Cognitive wireless networks should have a series of sensing processes, in which the time-space-frequency information of the network environment can be collected, including extracting the parameter changes of each layer in the network from each node, so as to determine the most correct network parameters to meet the needs of the network. The communication target requirements of a single node, end-to-end or even a group of nodes. Cognitive wireless network is the fundamental means to solve the coexistence of multiple networks under resource-constrained conditions, and it is also an important way to realize the fusion of heterogeneous networks in the future...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04W12/02H04W12/03H04W12/041H04W12/0433
Inventor 周怀北朱丽黄俊园陈勇群毛庆华田在荣陈波肖除病曾理
Owner WUHAN UNIV