A Study on Security Challenges in Wireless Sensor Networks: Key Management Approaches

摘要

Key management is the most important aspect of security in any type of network. The key management system should be substantially secure, robust and efficient for a secure communication protocol. It helps in maintaining the confidentiality of secret information from unauthorized users. To achieve security in wireless sensor networks it is important to be able to encrypt messages sent among sensor nodes. Key management is a major challenge to achieve security in wireless sensor network. Key for encryption purpose must be agreed upon by communicating nodes. It is also used for verifying the integrity of exchanged messages and authenticity of the sender. In this paper, we provide a survey of various key management schemes in WSNs. choosing a key management scheme depends upon the target applications requirements and the resource of the sensor network. In Wireless sensor network choosing a key management scheme depends upon the target applications requirements and the resource of the sensor network.