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pacifiquempacifiquem
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feat: authentication with rfid
1 parent 6e08356 commit 4bca03d

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6 files changed

+244
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‎read-memory-map.ino/read-memory-map.ino

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#include <SPI.h>
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#include <MFRC522.h>
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#define RST_PIN 9
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#define SS_PIN 10
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MFRC522 mfrc522(SS_PIN, RST_PIN);
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void setup() {
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Serial.begin(9600);
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while (!Serial);
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SPI.begin();
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//Enhance the MFRC522 Receiver Gain to maximum value of some 48 dB
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mfrc522.PCD_SetRegisterBitMask(mfrc522.RFCfgReg, (0x07<<4));
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mfrc522.PCD_Init();
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delay(4);
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mfrc522.PCD_DumpVersionToSerial();
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Serial.println(F("DISPLAYING UID, SAK, TYPE, AND DATA BLOCKS:"));
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}
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void loop(){
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if(!mfrc522.PICC_IsNewCardPresent()){
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return;
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}
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if(!mfrc522.PICC_ReadCardSerial()){
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return;
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}
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/*
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Dump debug info about the card. Worry not. PICC_HaltA() will be automatically called at the end.
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*/
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mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
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}

‎reading-rfid.ino/reading-rfid.ino

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#include <SPI.h>
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#include <MFRC522.h>
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#define RST_PIN 9
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#define SS_PIN 10
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MFRC522 mfrc522(SS_PIN, RST_PIN);
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MFRC522::MIFARE_Key key;
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MFRC522::StatusCode card_status;
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void setup(){
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Serial.begin(9600);
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SPI.begin();
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mfrc522.PCD_Init();
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Serial.println(F("PCD Ready!"));
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}
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void loop(){
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for (byte i = 0; i < 6; i++){
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key.keyByte[i] = 0xFF;
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}
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if(!mfrc522.PICC_IsNewCardPresent()){
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return;
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}
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if(!mfrc522.PICC_ReadCardSerial()){
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return;
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}
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Serial.println(F("\n*** Balance on the PICC ***\n"));
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String balance = readBytesFromBlock();
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Serial.println(balance);
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Serial.println(F("\n***************************\n"));
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delay(1000);
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mfrc522.PICC_HaltA();
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mfrc522.PCD_StopCrypto1();
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}
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String readBytesFromBlock(){
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byte blockNumber = 4;
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card_status = mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, blockNumber, &key, &(mfrc522.uid));
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if(card_status != MFRC522::STATUS_OK){
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Serial.print(F("Authentication failed: "));
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Serial.println(mfrc522.GetStatusCodeName(card_status));
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return;
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}
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byte arrayAddress[18];
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byte buffersize = sizeof(arrayAddress);
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card_status = mfrc522.MIFARE_Read(blockNumber, arrayAddress, &buffersize);
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if(card_status != MFRC522::STATUS_OK){
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Serial.print(F("Reading failed: "));
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Serial.println(mfrc522.GetStatusCodeName(card_status));
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return;
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}
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String value = "";
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for (uint8_t i = 0; i < 16; i++){
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value += (char)arrayAddress[i];
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}
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value.trim();
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return value;
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}

‎secure-rfid.ino/authentication.py

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#!/usr/bin/env python3
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import serial
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ser = serial.Serial(
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port='COM21',
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baudrate=9600,
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parity=serial.PARITY_NONE,
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stopbits=serial.STOPBITS_ONE,
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bytesize=serial.EIGHTBITS,
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timeout=1
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)
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ser.flush()
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def readFile(uuid):
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print(f"[py:log] Checking for UUID: |{uuid}|")
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with open("./tags.txt", "r") as f:
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for line in f.readlines():
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if line.rstrip().lstrip() == uuid:
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return True
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return False
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if __name__ == '__main__':
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while True:
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if ser.in_waiting > 0:
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line = ser.readline().decode('utf-8').rstrip()
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print(line)
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if line[0:14] == "[check-access]":
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print("Checking Access")
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isAllowed = readFile(line[14:].rstrip().lstrip())
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response = "granted" if isAllowed else "denied"
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ser.write(response.encode())

‎secure-rfid.ino/readme.md

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# Secure RFID
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Goal of this project is to authenticate a card, when we have tags's uuid in our database (File in version 1) the the card is authorized otherwise it's not.
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In v2 we will use ``sqlite`` database and it's comming soon.

‎secure-rfid.ino/secure-rfid.ino.ino

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#include <SPI.h>
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#include <MFRC522.h>
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#define SS_PIN 10
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#define RST_PIN 9
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MFRC522 rfid(SS_PIN, RST_PIN);
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MFRC522::MIFARE_Key key;
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byte nuidPICC[4];
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char ACCESS_GRANTED[] = "granted";
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const int SUCCESS_PIN = 7;
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const int ERROR_PIN = 8;
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const int BUZZER_PIN = 6;
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void setup() {
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Serial.begin(9600);
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SPI.begin();
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rfid.PCD_Init();
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pinMode(SUCCESS_PIN, OUTPUT);
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pinMode(ERROR_PIN, OUTPUT);
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pinMode(BUZZER_PIN, OUTPUT);
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Serial.println(F("READING THE CARD UNIQUE ID:"));
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for (byte i = 0; i < 6; i++) {
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key.keyByte[i] = 0xFF;
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}
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}
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void loop() {
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if (!rfid.PICC_IsNewCardPresent()) {
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return;
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}
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if (!rfid.PICC_ReadCardSerial()) {
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return;
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}
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if (rfid.uid.uidByte[0] != nuidPICC[0] ||
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rfid.uid.uidByte[1] != nuidPICC[1] ||
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rfid.uid.uidByte[2] != nuidPICC[2] ||
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rfid.uid.uidByte[3] != nuidPICC[3]) {
40+
for (byte i = 0; i < 4; i++) {
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nuidPICC[i] = rfid.uid.uidByte[i];
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}
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Serial.print(F("[check-access]"));
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printHex(rfid.uid.uidByte, rfid.uid.size);
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Serial.println(F("\n"));
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Serial.setTimeout(500);
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String res = Serial.readString();
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res.trim();
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Serial.print("|");
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Serial.print(res);
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Serial.println("|");
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if(res.equals(ACCESS_GRANTED)){
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Serial.println("ACCESS GRANTED");
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access_granted();
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}else {
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Serial.println("ACCESS DENIED");
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access_denied();
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}
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} else {
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Serial.println(F("This car was lastly detected ."));
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buzz("once");
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}
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/*
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* Halt PICC
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* Stop encryption on PCD
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*/
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rfid.PICC_HaltA();
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rfid.PCD_StopCrypto1();
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}
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void printHex(byte * buffer, byte bufferSize) {
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for (byte i = 0; i < bufferSize; i++) {
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Serial.print(buffer[i] < 0x10 ? " 0" : " ");
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Serial.print(buffer[i], HEX);
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}
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}
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void access_granted() {
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digitalWrite(SUCCESS_PIN, HIGH);
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digitalWrite(ERROR_PIN, LOW);
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buzz("twice");
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delay(1000);
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digitalWrite(SUCCESS_PIN, LOW);
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}
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void access_denied() {
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digitalWrite(ERROR_PIN, HIGH);
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digitalWrite(SUCCESS_PIN, LOW);
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buzz("long");
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digitalWrite(ERROR_PIN, LOW);
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}
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void buzz(String type){
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if(type.equals("once")) {
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analogWrite(BUZZER_PIN, 60);
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delay(60);
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analogWrite(BUZZER_PIN, 0);
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}else if(type.equals("twice")){
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analogWrite(BUZZER_PIN, 60);
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delay(60);
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analogWrite(BUZZER_PIN, 0);
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delay(60);
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analogWrite(BUZZER_PIN, 60);
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delay(60);
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analogWrite(BUZZER_PIN, 0);
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}else if(type.equals("long")){
106+
analogWrite(BUZZER_PIN, 60);
107+
delay(1000);
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analogWrite(BUZZER_PIN, 0);
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} else {
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analogWrite(BUZZER_PIN, 60);
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delay(60);
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analogWrite(BUZZER_PIN, 0);
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}
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}

‎secure-rfid.ino/tags.txt

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4B 77 D0 14
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E6 77 65 AC

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