Detection and Countermeasure of Node Misbehaviour in Clustered Wireless Sensor Network

Algorithm 1

Algorithm for deciding whether the node is attacker or not.

(1) if (𝑡=𝑡_round) then

(2)  if (𝐷_𝑖<=∅&&RES_𝑖>RES_𝑗) then

// where 𝑗Є{CH-𝑖}

(3)   susflag_𝑖 = susflag_𝑖 + 1

(4)  end if

(5) end if

(6) if (𝑡_round=𝑡_window) then

(7)  if (susflag_𝑖≠0 && CH-Count_𝑖 > avg (CH-Count))

(7)    confirm attacker 𝑖

(8)    Attacker-list = {Attacker-list}∪{𝑖}

(9)  else

(10)   Attack is not confirmed

(11)  end if

(12) end if