Reputation-Based Secure Sensor Localization in Wireless Sensor Networks

Pseudocode 1

Pseudocode for the reputation model.

// Beacon nodes evaluate each other between neighbor beacon nodes

  𝑅^𝑡_𝐵𝑗𝑖=0.5

while(true)

   𝑙𝛼=^𝐵𝑗𝑖−𝑑_𝐵𝑗𝑖𝑙_𝐵𝑗𝑖+𝑑_𝐵𝑗𝑖

    if  𝑙_𝐵𝑗𝑖−𝑑_𝐵𝑗𝑖≤Δ𝑑

     𝑅_𝐵^𝑡+Δ𝑡_𝑗𝑖=𝛼×𝑅^𝑡_𝐵𝑗𝑖+(1−𝛼)

    else

     𝑅_𝐵^𝑡+Δ𝑡_𝑗𝑖=(1−𝛼)×𝑅^𝑡_𝐵𝑗𝑖

    sleep(Δ𝑡)

   // Beacon nodes send the reputation value to their neighbor  sensor nodes

   Send (node 𝐵_𝑗, node 𝑈_𝑚, reputation value)

    // Sensor nodes compute the reputation value of their  neighbor beacon nodes

     𝑅_𝑈^𝑡+Δ𝑡_{𝑚,𝐵𝑖}=∑^𝑛_𝑘=1𝑅_𝐵^𝑡+Δ𝑡_𝑘𝑖𝑛