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--- iothings:proiecte:2022:dor_bell [2023/01/19 23:05]
adriana.boncu [Implementation of the solution]
+++ iothings:proiecte:2022:dor_bell [2023/01/20 11:31] (current)
adriana.boncu [Demo Video]
@@ Line 554: / Line 554: @@
 . Face recognition
 In this script, the following is done: camera preview, face detection and calling the function to send the opening command to the ESP32.
@@ Line 668: / Line 669: @@
 </code>
+. The opening command
+When the door opening function is called in the facial recognition script, the 5 layers of security are applied and the command is sent to the ESP32.
+<code python>
+import socket
+import random
+import numpy as np
+import math
+import time
+# criptare cu cifrul Caesar
+def encrypt(text,s):
+    result = ""
+    for i in range(len(text)):
+        char = text[i]
+        if (char.isupper()):
+            result+=chr((ord(char) + s-65) % 26 + 65)
+        else:
+            result+=chr((ord(char) + s - 97) % 26 + 97)
+    return result
+def obtine_cheie_TCP():
+    HOST = '192.168.43.5'  # Adresa IP server
+    PORT = 80               # Port server
+    C_cunoscut = 23
+    S_cunoscut = 9
+    print('Valoarea aleasa de client cunoscuta este :%d'%(C_cunoscut))
+    print('Valoarea aleasa de server cunoscuta este :%d'%(S_cunoscut))
+    C_secret = random.randint(3, 15)
+    # gets the generated key
+    x_client = int(pow(S_cunoscut,C_secret,C_cunoscut))
+    x_client_byte=bytes([x_client])
+    print(x_client_byte)
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+        s.connect((HOST, PORT))
+        s.sendall(x_client_byte)
+        data = s.recv(1024)
+    # print('S-a primit', data)
+    x_server=int.from_bytes(data, "big")
+    k_secreta_client = int(pow(x_server,C_secret,C_cunoscut))
+    print('Cheia secreta pentru client este: %d'%(k_secreta_client))
+    return k_secreta_client
+def generare_medie(x):
+    medie = []
+    medie_com = []
+    for i in x:
+        if i < 0:
+            medie.append(str(bin(i)[3:]))
+            aux = str(medie[len(medie) - 1])
+            for k in range(1,7-len(medie[len(medie) - 1])):
+                if k==7-len(medie[len(medie) - 1])-1:
+                    aux = str(1) + aux
+                else:
+                    aux = str(0) + aux
+            medie_com.append(aux)
+        else:
+            medie.append((str(bin(i))[2:]))
+            aux = str(medie[len(medie) - 1])
+            for k in range(1,7-len(medie[len(medie) - 1])):
+                aux = str(0) + aux
+            medie_com.append(aux)
+   # print(medie)
+   # print(medie_com)
+    string_medie=str(medie_com[0])+str(medie_com[1])+str(medie_com[2])+str(medie_com[3])
+    return string_medie
+def generare_cheie(k_secreta_client):
+    comanda='deschide'
+    start_time_enc = time.time()
+    string=encrypt(comanda,k_secreta_client)
+    print("--- Timp criptare: %.4f seconds ---" % (time.time() - start_time_enc))
+    start_time_compresie = time.time()
+    i=0
+    # "deschide" este scris in cod ascii
+    valori_ascii=[]
+    for fiecare in string:
+        valori_ascii.append(ord(fiecare)-97)
+        i=i+1
+   # print(f"valori_ascii = {valori_ascii}")
+    x = [] # stochez media
+    diff = [] # stochez diferenta
+    even_nos = [num for num in range(len(valori_ascii)) if num % 2 == 0]
+    for l in even_nos:
+        x.append(math.ceil(0.5*(valori_ascii[l]+valori_ascii[l+1])))
+        diff.append(valori_ascii[l]-valori_ascii[l+1])
+   # print(f"medie = {x}")
+   # print(f"diff = {diff}")
+    diff_b = []
+    aux = str()
+    diff_b_com = []
+    # adug totul la forma dorita
+    for i in diff:
+        if i < 0:
+            diff_b.append(str(bin(i)[3:]))
+            aux = str(diff_b[len(diff_b) - 1])
+            for k in range(1,7-len(diff_b[len(diff_b) - 1])):
+                if k==7-len(diff_b[len(diff_b) - 1])-1:
+                    aux = str(1) + aux
+                else:
+                    aux = str(0) + aux
+            diff_b_com.append(aux)
+        else:
+            diff_b.append((str(bin(i))[2:]))
+            aux = str(diff_b[len(diff_b) - 1])
+            for k in range(1,7-len(diff_b[len(diff_b) - 1])):
+                aux = str(0) + aux
+            diff_b_com.append(aux)
+   # print(diff_b)
+   # print(diff_b_com)
+    string_medie = generare_medie(x) # generez media corespunzator
+    print("--- Timp compresie: %.4f seconds ---" % (time.time() - start_time_compresie))
+    start_time_gen_cheie = time.time()
+    # declar chei pentru integrare in cheia mare si le procesez
+    ak = (bin(1))[2:]
+    bk = (bin(7))[2:]
+    for i in range(1,6-len(ak)):
+        ak = str(0)+ak
+    for i in range(1,6-len(bk)):
+        bk = str(0)+bk
+    key = ak+bk
+    seg1 = key[:4]
+    seg2 = key[4:8]
+    seg3 = key[8:]
+    key = str(diff_b_com[0])+seg1+str(diff_b_com[1])+seg2+str(diff_b_com[2])+seg3+str(diff_b_com[3])
+    print("--- Timp generare cheie: %.4f seconds ---" % (time.time() - start_time_gen_cheie))
+    return key, string_medie # returnez key si media
+# Converitre lista in string
+def listToString(s):
+    # initializez string gol
+    str1 = ""
+    # parcurg stringul
+    for ele in s:
+        str1 += ele
+    # returnez string
+    return str1
+# realizez parcurgerea orizontala
+def vertical(key,string_medie):
+    array = []
+    row1=[]
+    row2=[]
+    for i in range(len(key)):
+        if i%2 == 0:
+            row1.append(key[i])
+        else:
+            row2.append(key[i])
+    array.append(row1)
+    array.append(row2)
+    row_1 = listToString(row1)
+    row_2 = listToString(row2)
+    string = str(str(row_1)+str(row_2)+str(string_medie))
+    return string
+def UDP_trimite_cheie(string):
+    UDP_IP = '192.168.43.5'
+    UDP_PORT = 1234
+    MESSAGE = string
+   # print("UDP  IP: %s" % UDP_IP)
+   # print("UDP  port: %s" % UDP_PORT)
+   # print("Mesaj: %s" % MESSAGE)
+    sock = socket.socket(socket.AF_INET, # Internet
+                         socket.SOCK_DGRAM) # UDP
+    sock.sendto(MESSAGE.encode(), (UDP_IP, UDP_PORT))
+def trimite_comanda():
+    start_time_TCP = time.time()
+    k_secreta_client = obtine_cheie_TCP()
+    print("--- Timp TCP: %.4f seconds ---" % (time.time() - start_time_TCP))
+    key, string_medie = generare_cheie(k_secreta_client)
+    start_time_parcurgere = time.time()
+    string = vertical(key, string_medie)
+    print("--- Timp parcurgere: %.4f seconds ---" % (time.time() - start_time_parcurgere))
+    start_time_UDP = time.time()
+    UDP_trimite_cheie(string)
+    print("--- Timp UDP: %.4f seconds ---" % (time.time() - start_time_UDP))
+if __name__ == '__main__':
+    print("Main")
+</code>
+====== Results obtained ======
+**1. Door Opening System
+**
+{{ :iothings:proiecte:2022:boncu_rez_esp32.png | ESP32
+Results System}}
+**2. Video Capturing System
+**
+{{ :iothings:proiecte:2022:boncu_rez_rpi.jpeg?500x400 | RPI
+Results System}}
+====== Demo Video ======