A Hybrid Key Management Scheme for Wireless Sensor Networks
| Autor: | Ching-Yun Yu, 游精允 |
|---|---|
| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 Researches on wireless sensor networks have become an important topic recently. Because of the constraints on the cost of hardware, there are a lot of strict conditions of the memory, computational ability, and energy consumption, such that a research on wireless sensor networks may meet much difficulty. Although there are many results of this topic, most of them still can be improved. Especially, we can not compromised on security with those limits. Du et al. in 2003 proposed the multi-space random key pre-distribution scheme which is suitable for this kind of network. This scheme is based on Blom’s key generation scheme, which is proposed in 1985, and it is a symmetric key cryptosystem. As the progression of hardware, the public key cryptosystem has been applied in wireless sensor networks. Du et al. proposed an authenticating scheme corresponding to public key cryptosystem in 2005. This scheme is based on the public key authentication scheme which is proposed by Merkle in 1980. This paper lowers the energy consumption by replacing some portion of public key communications with symmetric key communications. And our symmetric key cryptosystem have no more problems about connectivity and resilience which are the problems of most of the other symmetric key cryptosystems. This scheme is a hybrid key management scheme integrating the advantages of symmetric key and public key systems. Moreover, we simulate and analyze the connectivity, energy consumption, and security of our scheme. Which verify that our scheme have the advantages of 100% connectivity, lowering energy consumption, and high security. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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