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EthernetClientSecure.h library support for ESP32

KKaushik

I'm trying to connect to server using Ethernet (ENC28j60 module) on ESP32. (Using Arduino IDE)

It requires to setCA() as below code for WifiClientSecure.h support for Wifi, but is there a way to do same with Ethernet.

#include <Arduino.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <HTTPClient.h>

const char* WiFI_SSID = "WIFI_SSID";
const char* WIFI_PASS = "WIFI_PASS";

char server[] = "https://www.server.com";


const char* rootCA =
  "-----BEGIN CERTIFICATE-----\n"
  
  "-----END CERTIFICATE-----\n";

void setup() {
  Serial.begin(9600);

  WiFi.mode(WIFI_STA);
  WiFi.begin(WiFI_SSID, WIFI_PASS);
  Serial.print("Connecting to WiFi ..");
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print('.');
    delay(500);
  }

  Serial.println(WiFi.localIP());

}

void loop() {
  if ((WiFi.status() == WL_CONNECTED))
  {
    WiFiClientSecure client;

    client.setCACert(rootCA);
    HTTPClient https;

    Serial.print("[HTTPS] begin...\n");
    if (https.begin(client, server))
    {

      Serial.print("Connected Successfully");

    }
  }
  else
  {
    Serial.printf("Not Connected to WiFi\n");
  }
  
}



Parents

  • Hi,

    The SetCA.. function is a member function of that WiFiClientSecure, it's got nothing to do with Ethernet, even though you may wish it to be similar. 

    So, you'll have to look for a ENC28J60 compatible library, and the functionality may be implemented with completely different methods.

    If you google "https ENC28J60 ESP32" you'll find some blogs, some of them have plausible code, but most of them have a ton of ads too, so, personally I'm not going to link to them, but as mentioned a google search with those search terms will find you what you need.

Reply

  • Hi,

    The SetCA.. function is a member function of that WiFiClientSecure, it's got nothing to do with Ethernet, even though you may wish it to be similar. 

    So, you'll have to look for a ENC28J60 compatible library, and the functionality may be implemented with completely different methods.

    If you google "https ENC28J60 ESP32" you'll find some blogs, some of them have plausible code, but most of them have a ton of ads too, so, personally I'm not going to link to them, but as mentioned a google search with those search terms will find you what you need.

Children
  • in reply to shabaz

    I have tried some suggestion with SSL client with ENC28J60 Module and W5550 Module

    Ethernet_HTTPS.ino

    /*
  Web client

 This sketch connects to a website (http://www.arduino.cc/asciilogo.txt)
 using an Arduino Wiznet Ethernet shield.

 Circuit:
 * Ethernet shield attached to pins 10, 11, 12, 13

 created 18 Dec 2009
 by David A. Mellis
 modified 9 Apr 2012
 by Noah Koontz, based on work by Adrian McEwen and Tom Igoe

 */

  // NOTE: This example REQUIRES the EthernetLarge library.
  // You can get it here: https://github.com/OPEnSLab-OSU/EthernetLarge

#include <SPI.h>
#include <EthernetLarge.h>
#include <SSLClient.h>
#include "cert.h"

// Enter a MAC address for your controller below.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

// if you don't want to use DNS (and reduce your sketch size)
// use the numeric IP instead of the name for the server:
//IPAddress server(54,85,55,79);  // numeric IP for Google (no DNS)
const char server[] = "www.arduino.cc";    // name address for Arduino (using DNS)
const char server_host[] = "www.arduino.cc"; // leave this alone, change only above two

// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192, 168, 0, 177);
IPAddress myDns(8, 8, 8, 8);

// Choose the analog pin to get semi-random data from for SSL
// Pick a pin that's not connected or attached to a randomish voltage source
const int rand_pin = 32;

// Initialize the SSL client library
// We input an EthernetClient, our trust anchors, and the analog pin
EthernetClient base_client;
SSLClient client(base_client, TAs, (size_t)TAs_NUM, rand_pin);
// Variables to measure the speed
unsigned long beginMicros, endMicros;
unsigned long byteCount = 0;
bool printWebData = true;  // set to false for better speed measurement

void setup() {
  // You can use Ethernet.init(pin) to configure the CS pin
  Ethernet.init(5);  // Most Arduino shields
  //Ethernet.init(5);   // MKR ETH shield
  //Ethernet.init(0);   // Teensy 2.0
  //Ethernet.init(20);  // Teensy++ 2.0
  //Ethernet.init(15);  // ESP8266 with Adafruit Featherwing Ethernet
  //Ethernet.init(33);  // ESP32 with Adafruit Featherwing Ethernet

  // Open serial communications and wait for port to open:
  Serial.begin(115200);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
  
  // start the Ethernet connection:
  Serial.println("Initialize Ethernet with DHCP:");
  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // Check for Ethernet hardware present
    if (Ethernet.hardwareStatus() == EthernetNoHardware) {
      Serial.println("Ethernet shield was not found.  Sorry, can't run without hardware. :(");
      while (true) {
        delay(1); // do nothing, no point running without Ethernet hardware
      }
    }
    if (Ethernet.linkStatus() == LinkOFF) {
      Serial.println("Ethernet cable is not connected.");
    }
    // try to configure using IP address instead of DHCP:
    Ethernet.begin(mac, ip, myDns);
  } else {
    Serial.print("  DHCP assigned IP ");
    Serial.println(Ethernet.localIP());
  }
  // give the Ethernet shield a second to initialize:
  delay(2000);
  
  Serial.print("connecting to ");
  Serial.print(server);
  Serial.println("...");

  // if you get a connection, report back via serial:
  auto start = millis();
  // specify the server and port, 443 is the standard port for HTTPS
  if (client.connect(server, 443)) {
    auto time = millis() - start;
    Serial.print("Took: ");
    Serial.println(time);
    // Make a HTTP request:
    client.println("GET /asciilogo.txt HTTP/1.1");
    client.println("User-Agent: SSLClientOverEthernet");
    client.print("Host: ");
    client.println(server_host);
    client.println("Connection: close");
    client.println();
  } else {
    // if you didn't get a connection to the server:
    Serial.println("connection failed");
  }
  beginMicros = micros();
}

void loop() {
  // if there are incoming bytes available
  // from the server, read them and print them:
  int len = client.available();
  if (len > 0) {
    byte buffer[80];
    if (len > 80) len = 80;
    client.read(buffer, len);
    if (printWebData) {
      Serial.write(buffer, len); // show in the serial monitor (slows some boards)
    }
    byteCount = byteCount + len;
  }

  // if the server's disconnected, stop the client:
  if (!client.connected()) {
    endMicros = micros();
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
    Serial.print("Received ");
    Serial.print(byteCount);
    Serial.print(" bytes in ");
    float seconds = (float)(endMicros - beginMicros) / 1000000.0;
    Serial.print(seconds, 4);
    float rate = (float)byteCount / seconds / 1000.0;
    Serial.print(", rate = ");
    Serial.print(rate);
    Serial.print(" kbytes/second");
    Serial.println();

    // do nothing forevermore:
    while (true) {
      delay(1);
    }
  }
}


    cert.h
    #ifndef _CERTIFICATES_H_
#define _CERTIFICATES_H_

#ifdef __cplusplus
extern "C"
{
#endif

/* This file is auto-generated by the pycert_bearssl tool.  Do not change it manually.
 * Certificates are BearSSL br_x509_trust_anchor format.  Included certs:
 *
 * Index:    0
 * Label:    Baltimore CyberTrust Root
 * Subject:  C=IE,O=Baltimore,OU=CyberTrust,CN=Baltimore CyberTrust Root
 * Domain(s): www.arduino.cc
 */

#define TAs_NUM 1

static const unsigned char TA_DN0[] = {
    0x30, 0x5a, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13,
    0x02, 0x49, 0x45, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x0a,
    0x13, 0x09, 0x42, 0x61, 0x6c, 0x74, 0x69, 0x6d, 0x6f, 0x72, 0x65, 0x31,
    0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x13, 0x0a, 0x43, 0x79,
    0x62, 0x65, 0x72, 0x54, 0x72, 0x75, 0x73, 0x74, 0x31, 0x22, 0x30, 0x20,
    0x06, 0x03, 0x55, 0x04, 0x03, 0x13, 0x19, 0x42, 0x61, 0x6c, 0x74, 0x69,
    0x6d, 0x6f, 0x72, 0x65, 0x20, 0x43, 0x79, 0x62, 0x65, 0x72, 0x54, 0x72,
    0x75, 0x73, 0x74, 0x20, 0x52, 0x6f, 0x6f, 0x74,
};

static const unsigned char TA_RSA_N0[] = {
    0xa3, 0x04, 0xbb, 0x22, 0xab, 0x98, 0x3d, 0x57, 0xe8, 0x26, 0x72, 0x9a,
    0xb5, 0x79, 0xd4, 0x29, 0xe2, 0xe1, 0xe8, 0x95, 0x80, 0xb1, 0xb0, 0xe3,
    0x5b, 0x8e, 0x2b, 0x29, 0x9a, 0x64, 0xdf, 0xa1, 0x5d, 0xed, 0xb0, 0x09,
    0x05, 0x6d, 0xdb, 0x28, 0x2e, 0xce, 0x62, 0xa2, 0x62, 0xfe, 0xb4, 0x88,
    0xda, 0x12, 0xeb, 0x38, 0xeb, 0x21, 0x9d, 0xc0, 0x41, 0x2b, 0x01, 0x52,
    0x7b, 0x88, 0x77, 0xd3, 0x1c, 0x8f, 0xc7, 0xba, 0xb9, 0x88, 0xb5, 0x6a,
    0x09, 0xe7, 0x73, 0xe8, 0x11, 0x40, 0xa7, 0xd1, 0xcc, 0xca, 0x62, 0x8d,
    0x2d, 0xe5, 0x8f, 0x0b, 0xa6, 0x50, 0xd2, 0xa8, 0x50, 0xc3, 0x28, 0xea,
    0xf5, 0xab, 0x25, 0x87, 0x8a, 0x9a, 0x96, 0x1c, 0xa9, 0x67, 0xb8, 0x3f,
    0x0c, 0xd5, 0xf7, 0xf9, 0x52, 0x13, 0x2f, 0xc2, 0x1b, 0xd5, 0x70, 0x70,
    0xf0, 0x8f, 0xc0, 0x12, 0xca, 0x06, 0xcb, 0x9a, 0xe1, 0xd9, 0xca, 0x33,
    0x7a, 0x77, 0xd6, 0xf8, 0xec, 0xb9, 0xf1, 0x68, 0x44, 0x42, 0x48, 0x13,
    0xd2, 0xc0, 0xc2, 0xa4, 0xae, 0x5e, 0x60, 0xfe, 0xb6, 0xa6, 0x05, 0xfc,
    0xb4, 0xdd, 0x07, 0x59, 0x02, 0xd4, 0x59, 0x18, 0x98, 0x63, 0xf5, 0xa5,
    0x63, 0xe0, 0x90, 0x0c, 0x7d, 0x5d, 0xb2, 0x06, 0x7a, 0xf3, 0x85, 0xea,
    0xeb, 0xd4, 0x03, 0xae, 0x5e, 0x84, 0x3e, 0x5f, 0xff, 0x15, 0xed, 0x69,
    0xbc, 0xf9, 0x39, 0x36, 0x72, 0x75, 0xcf, 0x77, 0x52, 0x4d, 0xf3, 0xc9,
    0x90, 0x2c, 0xb9, 0x3d, 0xe5, 0xc9, 0x23, 0x53, 0x3f, 0x1f, 0x24, 0x98,
    0x21, 0x5c, 0x07, 0x99, 0x29, 0xbd, 0xc6, 0x3a, 0xec, 0xe7, 0x6e, 0x86,
    0x3a, 0x6b, 0x97, 0x74, 0x63, 0x33, 0xbd, 0x68, 0x18, 0x31, 0xf0, 0x78,
    0x8d, 0x76, 0xbf, 0xfc, 0x9e, 0x8e, 0x5d, 0x2a, 0x86, 0xa7, 0x4d, 0x90,
    0xdc, 0x27, 0x1a, 0x39,
};

static const unsigned char TA_RSA_E0[] = {
    0x01, 0x00, 0x01,
};

static const br_x509_trust_anchor TAs[] = {
    {
        { (unsigned char *)TA_DN0, sizeof TA_DN0 },
        BR_X509_TA_CA,
        {
            BR_KEYTYPE_RSA,
            { .rsa = {
                (unsigned char *)TA_RSA_N0, sizeof TA_RSA_N0,
                (unsigned char *)TA_RSA_E0, sizeof TA_RSA_E0,
            } }
        }
    },
};

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* ifndef _CERTIFICATES_H_ */


    Still not getting successful connection.
    DHCP assigned IP 192.168.1.22
connecting to www.arduino.cc...
Took: 648
HTTP/1.1 404 Not Found
Date: Mon, 06 Nov 2023 18:26:40 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
Last-Modified: Mon, 06 Nov 2023 00:15:12 GMT
x-amz-server-side-encryption: AES256
x-amz-version-id: lX3PvRTQaz28ESxNc5cOdc0iiHeaPsCN
ETag: W/"799a726648b97cbd19ebf87355d1dcb9"
Via: 1.1 506384681faf799856202b309eeb7796.cloudfront.net (CloudFront), 1.1 b0f8455cc4557d0eb768236b7fae9c06.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: PNQ50-P4
X-Amz-Cf-Pop: DEL54-P3
Vary: Accept-Encoding
X-Cache: Error from cloudfront
X-Amz-Cf-Id: u9sEGaDGMgl-GMbxYAQsXn19Q7mZMTmlZw8aaNO5ZPloWABNF5QWMw==
CF-Cache-Status: DYNAMIC
Set-Cookie: __cf_bm=j_nNou8ofqM23kurH7SMO8ezDdHQvZV87cBnOXugJwE-1699381600-0-AWJr990zHIKPsoa/6WGx6P1pyhA9+Sy0c+yquolBGcadZBn8G3NtVURWKNemTP7mMckvHovw4YRQ9xO6AGhtSMk=; path=/; expires=Tue, 07-Nov-23 18:56:40 GMT; domain=.arduino.cc; HttpOnly; Secure; SameSite=None
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Server: cloudflare
CF-RAY: 8227a02ff8cdecb1-DEL
alt-svc: h3=":443"; ma=86400

1588
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0


disconnecting.
Received 6595 bytes in 2.4306, rate = 2.71 kbytes/second


    Any insight on this?

  • in reply to KKaushik

    I've not used this library that you're using, so I don't know if it is a library fault or usage fault, but since it is open source, it will have a repo somewhere. If it's GitHub, you can create an account, and then raise it as an issue that hopefully the repo owner can respond to.

  • in reply to KKaushik

    You did get a successful connection and it took 648 millis.

    It then tried a GET function, which failed with a 404 error code (usually means something could not be found).

  • in reply to BigG

    it seems that program is trying to get (line 102 of Ethernet_HTTPS.ino):
    https://www.arduino.cc//asciilogo.txt
    which doesn't exists