An Identity Authentication Scheme Based on SM2 Algorithm in UAV Communication Network

Algorithm 1

Core algorithm of the UAV side.

Time_2 =get_cpu_time() #The start point of the authentication time is calculated

client. send(message(IDu,Ru)) #The start point of the authentication time is calculated

IDs,Rs = client. recv(1024)#The UAV receives the IDs and Rs sent by the control station

res = check(IDu) #The drone verifies the IDs

res, content = sm2_uav.negotiation(Rs, PS, IDS, option, Ru, Ru)#Key negotiation

if not res:

     print(’error:’, content)

     return

     if option:#Generates the negotiation key, the KU

     Ru, KU, SU, U2 = content

     else:

     Ru, KU = content

     SU = None

encData=client. recv(1024)#The drone receives the ciphertext

decData = SM4. decryptSM4(KU, encData)#The drone receives the ciphertext

Time_2 =get_cpu_time() #Calculate the cutoff point of the authentication time

print(’Certification time consuming:%. 2f ms’ % ((Time_2 - Time_1) 1000))#Time used to output authentication

Command_send(decData)#The drone sends the decrypted commands to the UAV model operation in the Gazebo simulation environment