April 2014
Intermediate to advanced
538 pages
17h 31m
English
Content preview from Security for Multihop Wireless Networks
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320 ◾ Security for Multihop Wireless Networks
Due to the computation and storage capacities required by the source entity,
μTESLA is commonly used to broadcast messages from the BS to all the members
of the sensor network.
12.2.5.3 Performance Analysis
To evaluate the performance of SPINS, the protocol developers propose a spe-
cific implementation based on using the RC5 block cipher in counter mode (CTR
mode) for encryption and the CBC–MAC construction for message authentica-
tion. According to this implementation, the cost of using SNEP consists of a 6
byte increase in the length of each message to provide source authentication and
freshness
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