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Table 2 Number of messages for compared methods.

From: A Forward Authentication Key Management Scheme for Heterogeneous Sensor Networks

   

Pairwise key establishment

Key revocation

Kausar et al. [23]

H-sensor

transmitted

4

1

  

received

2

0

 

L-sensor

transmitted

2

0

  

received

4

1

Our Scheme

H-sensor

transmitted

2

1

  

received

1

0

 

L-sensor

transmitted

1

0

  

received

2

1