Journal
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume 11, Issue 5, Pages 1946-1956Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2012.030812.111857
Keywords
Sensor networks; code dissemination; security; denial-of-service; user privilege
Funding
- Ministry of Education, National Science Foundation of China [61070155]
- Program for New Century Excellent Talents in University [NCET-09-0685]
- Research Grants Council of the Hong Kong SAR, China [City U 111208]
- Scholarship Award for Excellent Doctoral Student
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Code dissemination in a wireless sensor network (WSN) is the process of propagating a new program image or relevant commands to sensor nodes. As a WSN is usually deployed in hostile environments, secure code dissemination is and will continue to be a major concern. Most code dissemination protocols are based on the centralized approach in which only the base station has the authority to initiate code dissemination. However, it is desirable and sometimes necessary to disseminate code images in a distributed manner which allows multiple authorized network users to simultaneously and directly update code images on different nodes without involving the base station. Motivated by this consideration, we develop a secure and distributed code dissemination protocol named DiCode. A salient feature of DiCode is its ability to resist denial-of-service attacks which have severe consequences on network availability. Further, the security properties of our protocol are demonstrated by theoretical analysis. To verify the efficiency of the proposed approach in practice, we also implement the proposed mechanism in a network of resource-constrained sensor nodes.
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