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Overview:

Broadcast authentication is a critical security service in Wireless Sensor Networks (WSNs), as it allows the mobile users of WSNs to broadcast messages to multiple sensor nodes in a secure way. Although symmetric-key-based solutions such as µTESLA and multilevel µTESLA have been proposed, they all suffer from severe energy-depletion attacks resulting from the nature of delayed message authentication. This paper presents several efficient public-key-based schemes to achieve immediate broadcast authentication and thus avoid the security flaw inherent in the µTESLA-like schemes. Their schemes are built upon the unique integration of several cryptographic techniques, including the Bloom filter, the partial message recovery signature scheme and the Merkle hash tree.

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Format:PDFSize:228 KB
Date:Mar 2007
Pages:10

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