Key distribution
In
In
Key distribution is an important issue in wireless sensor network (WSN) design. There are many key distribution schemes in the literature that are designed to maintain an easy and at the same time secure communication among sensor nodes. The most accepted method of key distribution in WSNs is key predistribution, where secret keys are placed in sensor nodes before deployment. When the nodes are deployed over the target area, the secret keys are used to create the network.[1]
For more info see: key distribution in wireless sensor networks.
Storage of keys in the cloud
Key distribution and key storage are more problematic in the cloud due to the transitory nature of the agents on it.[2] Secret sharing can be used to store keys at many different servers on the cloud.[3] In secret sharing, a secret is used as a seed to generate a number of distinct secrets, and the pieces are distributed so that some subset of the recipients can jointly authenticate themselves and use the secret information without learning what it is. But rather than store files on different servers, the key is parceled out and its secret shares stored at multiple locations in a manner that a subset of the shares can regenerate the key.
Notes
- ^ Du, Wenliang; Deng, Jing; Han, Yunghsiang; Varshney, Pramod (2000). "A Pairwise Key Pre-Distribution Scheme for Wireless Sensor Networks". Electrical Engineering and Computer Science - Paper 36.
- ^ Yu, S. et al. Achieving Secure, Scalable, and Fine-grained Data Access Control in Cloud Computing. IEEE INFOCOM 2010.
- ^ Parakh, A. and Kak, S. Online data storage using implicit security. Information Sciences, vol. 179, pp. 3323-3331, 2009.
- ^ Shamir, Adi (1979). "How to share a secret". Communications of the ACM 22 (11): 612–613.
- ^ Blakley, G. R. (1979). "Safeguarding cryptographic keys". Proceedings of the National Computer Conference 48: 313–317.