Security in Wireless Sensor Networks


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Most of the existing time synchronization techniques are not designed with security provisions. This paper proposes security solution for time synchronization in wireless sensor networks with the objective to ensure message integrity and message authentication in an energy efficient manner. Simulation results exhibit that proposed scheme is suitable to ensure security for time synchronization in wireless sensor networks in an energy efficient manner.

Keywords: Security, time synchronization, WSN, attacks on nodes, processor, sensor nodes.

Ebook: Wireless Sensor Network Security

Abstract: Background: Recent technological advancement in the field of wireless communication, wireless sensor networks have emerged as an effective solution for many applications such as pollution monitoring, military applications, health applications, seismic studies, under water studies, etc. Volume 7 , Issue 1 , Journal Home. Graphical Abstract: Abstract: Background: Recent technological advancement in the field of wireless communication, wireless sensor networks have emerged as an effective solution for many applications such as pollution monitoring, military applications, health applications, seismic studies, under water studies, etc.


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The performance evaluation includes message complexity and energy consumption. Conclusion: It is mandatory to identify the security requirements of the applications.

Security Challenges for Wireless Sensor Networks - Dynamic Routing as a Security Paradigm

Search for more papers by this author. Mukesh Singhal Corresponding Author E-mail address: singhal cs. Tools Request permission Export citation Add to favorites Track citation. Share Give access Share full text access.

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Share full text access. Please review our Terms and Conditions of Use and check box below to share full-text version of article. Abstract With sensor networks on the verge of deployment, security issues pertaining to the sensor networks are in the limelight.


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    Because a WSN has a central node this attack can be prevented using efficient protocols. This attack consist of attract all the traffic of the sensor network to one node. The attacker tries to attract all the traffic of the network and simulate being the closest node to the Base State, based on the routing metric used in the routing protocol.

    wireless sensor networks security issues presentation

    Once it inserts itself between the nodes and the station it can do whatever it want with the information. In this attack the attacker records and retransmits the packages or bits sent by one node to another directly, making the first node believe that the other node is at 1 hop of distance from it and marking it as a parent. For example in the image the attacker makes node Z believe that B is the only one hope away, creating a wormhole for node Y. As we saw, there are a lot of factors and types of attacks to consider when selecting the best framework or set of frameworks for securing a WSN.

    In this blogpost I will explain the different solutions that can be applied for data encryption in the network. This solution can protect the network from potential Sybil attacks, wormhole attacks, information or data spoofing and message reply attacks. The design and selection of the algorithm used for encryption usually will depend on the nature of the application. To this three is added one more: Availability, that ensures that the service of resources provided by the network or a single node is available when it is required.

    Security for Wireless Sensor Networks using Identity-Based Cryptography

    It is important to select the appropriate security technique according to the security requirements of the network. They can be classified in three groups based on the already existing techniques:. Symmetric: where there is a single shared key between two communicating nodes used for encryption and decryption.

    This is the most popular type of encryption used in WSN because it is not as computational complex as other type, but there are other challenges involved. Asymmetric: where there is one private key use to decrypt and one public used to encrypt. Normally this type of algorithms are more computational complex and therefore undesirable in a WSN, but many efficient asymmetric algorithms were presented with this kind of networks in mind.

    Hybrid: Combining the advantages of the other two. Symmetric algorithms are used to ciphering and authentication, and asymmetric algorithms are used for key generation. The specific frameworks design for WSN can be divided according to the nature of their key material, if the share key is public or private.

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