Abstract
Secure multicast in a wireless network is possible only if subsets of nodes share different sets of encryption keys. In this paper we propose a key protection and release mechanism based on broadcast tokens, where each node is equipped with protected shares of several encryption keys (node-share) which can be unlocked only when the broadcast tokens arrive. If the node-shares are different for different nodes, each broadcast token could unlock a different set of keys in each node. This makes the network reconfigurable as the information shared between various nodes will change with the accumulation of each new token. A non-perfect secret sharing scheme has been used construct the node-shares and tokens based on a carefully designed codebook which must satisfy certain rules to ensure that the un-encrypted broadcast tokens and the node-shares do not leak the encryption keys. Construction for a three node re-configurable network is discussed under collusion-free conditions.
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Karthik, K. (2013). Virtually Reconfigurable Secure Wireless Networks Using Broadcast Tokens. In: Lopez, J., Huang, X., Sandhu, R. (eds) Network and System Security. NSS 2013. Lecture Notes in Computer Science, vol 7873. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-38631-2_45
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DOI: https://doi.org/10.1007/978-3-642-38631-2_45
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-38630-5
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