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Wireless sensor network group key agreement method

A wireless sensor and network group technology, applied in wireless communication and key distribution, can solve the problems of system master secret or node private key leakage, node repudiation, certificate management transmission, etc.

Active Publication Date: 2014-05-21
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The previous key management scheme based on symmetric key has problems such as node repudiation, while the key management scheme based on PKI system has serious problems such as certificate management and transmission.
At the same time, in the key research scheme based on identity public key cryptography and threshold mechanism, if multiple sensor nodes collude or are compromised, the system master secret or the private key of the node will be leaked

Method used

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Embodiment Construction

[0017] Embodiments of the present application will be described in detail below.

[0018] In this application, n nodes in the wireless sensor network are denoted as N i , identified as ID i , the secret values ​​are x i , and some of the private keys are D i , X complete private key is S respectively i =x i D. i , the public keys are P i =i ,Y i >, where, given the security parameter 1 k , G 1 and G 2 is a cyclic group of order q, q is a large prime number, G 1 is the additive group, G 2 is the multiplicative group, in G 1 , G 2 The problem of solving discrete logarithms in is intractable, P is G 1 any of the generators, is a bilinear map, h:{0,1} n ×G 2 ×{0,1} n →{0,1} n , Q ID =H 1 (ID), X i =x i P, Y i =x i P pub , 1≤i≤n, P and Ppub are preset parameters, P pub =sP, s is a randomly selected secret value.

[0019] A wireless sensor network group key agreement method according to an embodiment of the present application may include:

[0020] ...

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Abstract

The invention discloses a wireless sensor network group key agreement method. According to the wireless sensor network group key agreement method of the invention, a tedious management problem of using a digital certificate is avoided, a key confirmation step is added, and the method is suitable for a wireless sensor network.

Description

technical field [0001] This application relates to a wireless sensor network group key agreement method. Background technique [0002] A wireless sensor network is formed by a group of autonomous wireless nodes or mobile terminals cooperating with each other, independent of fixed infrastructure, and is a self-creating, self-organizing and self-managing network. [0003] Due to the self-organization, centerless, multi-hop characteristics of sensors, there are special requirements for sensor network security such as node key management. The previous key management scheme based on symmetric key has problems such as node repudiation, and the key management scheme based on PKI system has serious problems such as certificate management and transmission. At the same time, in the key research scheme based on identity public key cryptography and threshold mechanism, if multiple sensor nodes collude or are compromised, the system master secret or the private key of the node will be l...

Claims

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Application Information

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IPC IPC(8): H04W12/04H04W12/06H04L9/08
Inventor 江为强
Owner CHINA MOBILE COMM GRP CO LTD