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Wireless sensor networks are considered ideal candidates for a wide range of applications, such as industry monitoring, data acquisition in hazardous environments, and military operations. It is desirable and sometimes necessary to reprogram sensor nodes through wireless links after deployment, due to, for example, the need of removing bugs and adding new functionalities. The process of propagating a new code image to the nodes in a wireless sensor network is referred to as code dissemination. This paper presents the design, implementation, and evaluation of an efficient, secure, robust, and DoS-resistant code dissemination system named Seluge for wireless sensor networks.
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