Quantal Response Equilibrium-Based Strategies for Intrusion Detection in WSNs

Algorithm 1

QRE-based intrusion detection algorithm for IDS agents.

(1)  ;

(2) Initialize game parameters required in Definition 2;

(3) Do UNTIL the end of interactions between players Attacker and the corresponding IDS agent

(4)  Woken by Monitored Events;

(5)  Judge whether Monitored Events are normal or malicious with the known intrusion detection techniques;

(6)  IF the output of detection is malicious THEN

(7)   IF the RIDG is not existed THEN

(8)    Construct the first stage RIDG with game parameters including , , and ;

(9)   ELSE

(10)    Obtain the current stage RIDG from the Stored Game Data;

(11)     ENDIF

(12)   Compute according to (6);

(13)   Compute according to (4) and store it into the Stored Game Data for the next stage RIDG;

(14)   Combine IDS results and , and send them to Administrator;

(15)  ENDIF

(16)   ;

(17) ENDDO