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Table 1 Notation.

From: Tree Based Protocol for Key Management in Wireless Sensor Networks



th sensor node in the network, denotes the (unique) identifier of the sensor node.

The encryption of message with key .


A nodeS broadcasts the message , any node in the radius of perception of the BS receives the message .

The Message Authentication Code of the message with the symmetric key .

The concatenation of the information with information .

A nonce generated by node S i .