Authentication scheme for ad hoc and sensor wireless networks

Details Authentication scheme for ad hoc and sensor wireless networks Authentication scheme for ad hoc and sensor wireless networks

2006-08-22

2006-08-22

Moise, Emmanuel L. (Department: 2137)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S153000, C713S155000, C713S161000, C705S067000

Reexamination Certificate

active

07096359

ABSTRACT:
Strong authentication of packets sent between nodes of different clusters in a two-tier ad hoc network is provided by the cluster heads. Each cluster head authenticates nodes that enter the cluster. Thereafter, when a sending node requests a session from its cluster head with a receiving node in another cluster, the cluster head negotiates a session secret key (SSK) with the corresponding cluster head of the receiving node. Further, the cluster head provides authentication tags for the sending node to use with each packet. Each authentication tag is time-stamped, digitally signed by the cluster head, encrypted with the SSK, and includes indicators of message integrity, including a sequence number and TCP header field of checksum. The sending node further calculates a check result from a number of the authentication tags, encrypted with the SSK, so that the receiving node can authenticate the number of packets.

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