Wireless sensor network security data discovery and dissemination method based on Hash tree

A wireless sensor and network security technology, applied in network topology, wireless communication, public key for secure communication, etc., can solve the problems of ignoring data discovery and dissemination security, and achieve the effect of ensuring efficiency and security

Active Publication Date: 2013-10-23
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

These existing wireless sensor network discovery and dissemination methods can ensure the reliabilit

Method used

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  • Wireless sensor network security data discovery and dissemination method based on Hash tree
  • Wireless sensor network security data discovery and dissemination method based on Hash tree

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Embodiment

[0037] Such as figure 1 As shown, SeDrip is divided into three stages: system initialization, packet preprocessing and data packet verification.

[0038] In the system initialization phase, the base station obtains the private key SK and the public parameters {PK, Q, p, q, H(.)} by performing the following operations, where PK is the public key, thereby establishing an elliptic curve cryptosystem: the base station first selects a One-way hash function H(.), such as SHA-1, and choose an elliptic curve E about GF(p), where p is a large prime number. Use Q to represent the origin of E, and use another large prime number q to represent the order of Q. Furthermore, select the private key SK∈GF(q), and use the formula PK=SK*Q to generate the public key. Finally, each public parameter is preloaded into each node of the network. For example: in the 160-bit elliptic curve encryption, PK and Q are both 320-bit long, and p and q are both 160-bit long.

[0039] In SeDrip, a quadruple ...

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Abstract

The invention discloses a wireless sensor network security data discovery and dissemination method based on a Hash tree. The method comprises the following steps that: (1) in the initialization phase of a system, a base station constructs an elliptic curve cryptosystem and generates a public key, a private key as well as public parameters; (2) the base station constructs data packets aiming at small data needing distribution, carries out digital signature on the data packets, and then sends the data packets to all sensor nodes of a network; and (3) after the data packets are received by all the sensor nodes, the sensor nodes judge whether the received data packets are legal data packets or not, receive the data packets and update if the received data packets are legal, and directly give up the data packets if the received data packets are illegal. According to the method, the condition that sensor node resources are limited is taken into account, and the security is guaranteed on the basis that the efficiency of a data discovery and dissemination process is guaranteed. The method has the advantages that the node compromise is resisted, the robustness for packet loss and packet transmission disorder is high, no time synchronization between the base station and the sensor nodes exists, and the like.

Description

technical field [0001] The invention relates to a wireless communication technology, in particular to a hash tree-based wireless sensor network security data discovery and dissemination method. Background technique [0002] Wireless sensor networks have been widely used in many fields involving monitoring and controlling the physical environment, including industrial monitoring and military operations. After the wireless sensor network is deployed, in order to adjust the configuration parameters of sensor nodes or distribute management commands and request information to sensor nodes, it is often necessary to transmit data through wireless links. [0003] In the existing wireless sensor network discovery and dissemination method, the sensor node will periodically broadcast the data summary stored by itself, and adjust the broadcast cycle by comparing the received data summary with its own data summary. When the data summary received by the node is older than the data summar...

Claims

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Application Information

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IPC IPC(8): H04L9/30H04L9/32H04L29/06H04L29/08H04W84/18
Inventor 何道敬唐韶华陈仕乾
Owner SOUTH CHINA UNIV OF TECH
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