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Wireless sensor network key management method and system

A wireless sensor and wireless sensor group technology, applied in the field of network security, can solve problems such as attack, large storage space, and increased computing overhead, and achieve the effects of avoiding paralysis, improving security, and minimizing impact

Active Publication Date: 2019-10-08
BEIJING UNION UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the best security performance. If a node is compromised, it will not affect the communication security between other nodes. The disadvantage is that it requires a large storage space. This solution is not feasible when the node storage space is limited.
There are also complex trade-offs that add computational overhead
Existing key pre-distribution schemes for wireless sensor networks cannot achieve a good balance in terms of computational load, storage consumption, and security

Method used

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  • Wireless sensor network key management method and system
  • Wireless sensor network key management method and system
  • Wireless sensor network key management method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Such as figure 1 and figure 2 As shown, step 100 is executed, and the attribute value of the wireless sensor group is set in the setting module 200 (including the security level of the wireless sensor group, the principle of wireless sensor grouping, the number of wireless sensor groups, the number of wireless sensors in each wireless sensor group, The upper limit of the number of wireless sensors in each wireless sensor group, the internal communication key of each wireless sensor group, the external communication nodes of each wireless sensor group, the external communication key between wireless sensor groups, the first time threshold, the second second time threshold, third time threshold and fourth time threshold). Set the security level of the wireless sensor group into A level, B level and C level, wherein the security level of A level is the highest, and the security level of C level is the lowest. The number of wireless sensors in a class A wireless sensor g...

Embodiment 2

[0082] Such as image 3 As shown, when the network is delayed or intruded, step 300 is executed to determine the alarm information and determine the location, group, and impact range of the wireless sensor with the problem. Step 310 is executed to determine the alarm level according to the information of the wireless sensor and the security level of the wireless sensor group where the wireless sensor is located. If the security level of the wireless router group where the problematic wireless router is located is level A, the alarm level is level 0 or 1; if the security level of the wireless router group where the problematic wireless router is located is level B, the alarm level is level 0 -Level 2; For example, the security level of the wireless router group where the wireless router in question is located is level C, and the alarm level is level 0-3. Step 320 is executed to determine an alarm handling scheme according to the alarm level. When the alarm level is level 3, m...

Embodiment 3

[0084] Such as Figure 4As shown, step 400 is executed to determine the information of newly added wireless sensors (including the number, location, and security level of newly added wireless sensors), and step 410 is executed to determine the allocation scheme of newly added nodes according to the information of newly added wireless sensors. When the number of newly added wireless sensors of the same security level plus the number of original wireless sensors is less than or equal to the upper limit of the number of wireless sensors in the wireless sensor group multiplied by the number of wireless sensor groups, the newly added wireless sensors are randomly assigned to the wireless sensor group, but get The number of wireless sensors in the wireless sensor group of the newly added wireless sensor must not exceed the upper limit. When the number of newly added wireless sensors of the same security level plus the number of original wireless sensors is greater than the upper lim...

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Abstract

The invention provides a wireless sensor network key management method and system. The method includes the following steps: setting the attribute value of the wireless sensor group according to the security level, grouping the wireless sensors according to the attribute value, specifying the external communication node according to the attribute value, adjusting the attribute value, and according to the adjusted attribute value The above property values ​​are adjusted for wireless sensor groups. In the case of ensuring security, this scheme has great improvements in reducing storage consumption and computing overhead. Even if a certain attack is successful, this feature can also ensure that its impact is minimized, and it has strong confidentiality.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to a wireless sensor network key management method and system. Background technique [0002] In recent years, wireless sensor networks have been widely used in military monitoring, field monitoring, intelligent transportation, etc., and all these applications depend on safe and reliable data transmission, so the security of wireless sensor networks has become a priority. Existing sensor nodes have great security holes, and attackers can forge or pretend to be legitimate nodes to join the sensor network by obtaining the keys stored in the sensor nodes. Once a part of the nodes in the sensor network is controlled, the attacker can launch many kinds of attacks, such as listening to the information transmitted in the sensor network, publishing false routing information or transmitting false sensing information to the sensor network, and carrying out denial of service attacks. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04W12/04H04W84/18
CPCH04L63/065H04L63/104H04L63/20H04W12/04H04W84/18
Inventor 金祎
Owner BEIJING UNION UNIVERSITY