MQTT_x509_bin.ino

/* ESP8266 AWS IoT example by Evandro Luis Copercini
   Public Domain - 2017

    It connects to AWS IoT server then:
  - publishes "hello world" to the topic "outTopic" every two seconds
  - subscribes to the topic "inTopic", printing out any messages

  -WARNING: this example doesn't verify the server CA due low heap, this can be a security issue
*/
#include <ESP8266WiFi.h>
#include <PubSubClient.h> //Get it from here: https://github.com/knolleary/pubsubclient

/* convert and replace with your keys
  $ openssl x509 -in aaaaaaaaa-certificate.pem.crt -out certificates/cert.der -outform DER
  $ openssl rsa -in aaaaaaaaaa-private.pem.key -out certificates/private.der -outform DER
  $ xxd -i certificates
*/

unsigned char certificates_esp8266_bin_key[] = { 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x34, 0xc3, 0x01, 0x00, 0xf5, 0xc5, 0x4b, 0x6a, 0x1f, 0x4b, 0x49, 0xcc, 0xb3, 0x49, 0xcc, 0xca, 0x03, 0xc4, 0x9f, 0xab, 0x4a, 0x56, 0x5a, 0x44, 0x45, 0x3c, 0xfc, 0xac, 0x0f, 0xaa, 0xf4, 0x56, 0x15, 0xc1, 0xcb, 0xaa, 0x53, 0x60, 0xc1, 0x0a, 0x1f, 0x1c, 0x16, 0x96, 0xc5, 0xaf, 0xc3, 0x65, 0xc6, 0x4c, 0xc3, 0xa1, 0xc5, 0x01, 0x4f, 0x69, 0x14, 0xc5, 0x9c, 0x3c, 0xc4, 0x1c, 0x34, 0x44, 0x54, 0x54, 0x1a, 0xac, 0xbc, 0xc4, 0x5a, 0x44, 0x9c, 0x51, 0x43, 0x1c, 0x04, 0x39, 0xc4, 0x4c, 0x4f, 0x44, 0x1c, 0x43, 0xc1, 0xc9, 0x4b, 0xac, 0x63, 0x59, 0x31, 0x15, 0x4c, 0x9c, 0x4b, 0xcb, 0x13, 0xf0, 0x4c, 0x4c, 0x13, 0xac, 0x4c, 0x44, 0xc1, 0xc4, 0xc0, 0xcb, 0x41, 0x44, 0x33, 0x6a, 0x5a, 0x1c, 0xaa, 0x1c, 0x01, 0xbb, 0xf3, 0xc4, 0x44, 0xbf, 0x53, 0xc1, 0x41, 0x03, 0x9c, 0xff, 0x4b, 0x5c, 0xaa, 0x1c, 0x94, 0xc4, 0x95, 0xca, 0x96, 0x41, 0x36, 0x41, 0x31, 0xa6, 0xc1, 0xac, 0x13, 0xcc, 0xfa, 0xf4, 0x54, 0x0a, 0xcc, 0x1c, 0x00, 0x60, 0x16, 0xab, 0x61, 0xcc, 0x01, 0x60, 0x60, 0x31, 0x01, 0xca, 0x1f, 0x46, 0x01, 0x90, 0xc0, 0xfb, 0x64, 0xcc, 0xc3, 0x4a, 0x0b, 0xa9, 0xc4, 0x9c, 0x16, 0x55, 0xa4, 0x4c, 0xcc, 0xc4, 0x45, 0x64, 0x31, 0x11, 0x49, 0x1c, 0x5b, 0xb4, 0x64, 0x64, 0x0a, 0x44, 0x49, 0x45, 0x1b, 0x64, 0x60, 0x31, 0x4c, 0xb9, 0x91, 0xb1, 0xca, 0x16, 0x64, 0xc5, 0xcc, 0x14, 0x41, 0x63, 0xc4, 0x03, 0x45, 0x54, 0x64, 0x0c, 0xbc, 0x46, 0x33, 0xc0, 0xab, 0xf4, 0x41, 0x9c, 0x51, 0xb4, 0xcc, 0xac, 0x01, 0x44, 0xc1, 0x0c, 0xcc, 0x64, 0x44, 0xf4, 0x3b, 0xc1, 0x91, 0x40, 0xcc, 0x10, 0xcf, 0x4b, 0x9a, 0x94, 0xab, 0x1c, 0x01, 0x03, 0x01, 0x00, 0x01, 0x01, 0x41, 0x01, 0x00, 0x1a, 0x9c, 0x6b, 0x04, 0x11, 0x91, 0xc0, 0x30, 0xac, 0xc3, 0x11, 0xc6, 0x0c, 0x4b, 0x6b, 0x14, 0x46, 0x0c, 0x6c, 0xab, 0xcc, 0xb6, 0xc6, 0x46, 0x41, 0x14, 0x1c, 0x6c, 0x0c, 0x39, 0x15, 0x1a, 0x49, 0xac, 0xbf, 0xc5, 0x9a, 0xfc, 0x40, 0x4f, 0x3b, 0xc5, 0xaa, 0xcc, 0xa1, 0x14, 0x15, 0xf4, 0xf1, 0xb9, 0x41, 0xa4, 0x45, 0x41, 0xc0, 0x3c, 0xf4, 0x6c, 0x34, 0xcc, 0x14, 0x40, 0x13, 0x4a, 0x0c, 0xcc, 0xfc, 0x53, 0xc1, 0x5f, 0x54, 0x9c, 0xcc, 0x10, 0x41, 0x64, 0x44, 0xf4, 0xac, 0x60, 0x4c, 0xf4, 0x4c, 0x6c, 0x4c, 0x9f, 0x1c, 0xcc, 0x13, 0xf6, 0x0f, 0xa4, 0x43, 0x64, 0xf0, 0x4a, 0x61, 0x16, 0x44, 0x44, 0x0c, 0xac, 0xa9, 0xa9, 0xfa, 0xc4, 0x4c, 0xc5, 0xb4, 0xa5, 0x6b, 0x9c, 0x31, 0xcb, 0xa1, 0xf1, 0x44, 0x11, 0x94, 0xf4, 0xf4, 0x6f, 0x59, 0x10, 0x41, 0x3c, 0x44, 0xb0, 0xfc, 0xbf, 0x5a, 0xbc, 0xc5, 0xcc, 0x5c, 0xa4, 0x45, 0x44, 0x61, 0xaf, 0x40, 0xf0, 0xc1, 0x90, 0x96, 0xa6, 0x9f, 0xfa, 0x4c, 0x15, 0x44, 0xa0, 0x64, 0x1c, 0xc4, 0x1c, 0x1c, 0xa9, 0x14, 0x13, 0x3c, 0x64, 0xa1, 0xaf, 0xcb, 0x43, 0xf6, 0xc5, 0xf9, 0xc9, 0xc1, 0x1c, 0xab, 0x13, 0x3f, 0xc5, 0x34, 0xc4, 0x1a, 0xb9, 0x49, 0x94, 0x1c, 0xc1, 0x4b, 0xaa, 0x36, 0x44, 0x19, 0x16, 0x4c, 0xaa, 0x1a, 0xca, 0x06, 0xfb, 0x9f, 0x44, 0xf1, 0xcb, 0xa4, 0x44, 0x41, 0xfc, 0x35, 0xc6, 0x69, 0x9c, 0xb1, 0x41, 0x16, 0xfc, 0x0b, 0xf0, 0x5c, 0xcc, 0x43, 0x14, 0x16, 0x4b, 0xa0, 0x41, 0xf4, 0x1f, 0xc4, 0x5f, 0xc1, 0xcc, 0xca, 0xa0, 0x1b, 0xb0, 0x45, 0x15, 0xc4, 0xc1, 0x94, 0x31, 0x44, 0x54, 0xb1, 0x31, 0x91, 0x96, 0x44, 0xbc, 0xc1, 0x0f, 0xb4, 0xfc, 0xba, 0xa4, 0xf1, 0xb1, 0xff, 0x09, 0x01, 0x41, 0x41, 0x00, 0xc4, 0x34, 0x13, 0x30, 0x1a, 0x40, 0x14, 0xc3, 0x99, 0x11, 0x9f, 0xf1, 0x9c, 0xcc, 0xa4, 0x4c, 0xa1, 0x44, 0xa4, 0xc1, 0x9b, 0x40, 0xc3, 0x4f, 0xc5, 0xcc, 0x44, 0x56, 0x4c, 0xab, 0x94, 0xca, 0x00, 0x16, 0x90, 0x34, 0xc9, 0x5c, 0x0c, 0xb4, 0x9c, 0xb4, 0x10, 0x04, 0xac, 0x04, 0x41, 0xcc, 0xb4, 0xca, 0xca, 0x14, 0x14, 0x4c, 0x41, 0x4c, 0x01, 0xf9, 0x0c, 0x34, 0xc1, 0xfb, 0x53, 0x1c, 0xb1, 0x44, 0x44, 0x3c, 0xf4, 0xcf, 0x4f, 0xc1, 0x54, 0x15, 0x4c, 0x04, 0x40, 0x14, 0xc6, 0xf5, 0x4c, 0x1c, 0xf4, 0x6c, 0xc4, 0x6a, 0x1c, 0x44, 0x6b, 0x59, 0xc3, 0x19, 0xc3, 0x94, 0x4b, 0x63, 0xa5, 0x9c, 0x1c, 0x11, 0x4c, 0x59, 0xa4, 0x01, 0x6c, 0x49, 0x10, 0x41, 0xcf, 0x5b, 0xbc, 0xbc, 0xca, 0x43, 0x41, 0x64, 0x14, 0x1b, 0x46, 0xba, 0x0b, 0x35, 0x44, 0x4f, 0x61, 0xc4, 0xab, 0x4b, 0x01, 0x41, 0x41, 0x00, 0xa1, 0xc1, 0x01, 0x4a, 0x93, 0xc1, 0x3b, 0x0c, 0x4c, 0x1c, 0xc0, 0x04, 0x05, 0x44, 0x59, 0xc4, 0x4b, 0xb1, 0x44, 0x56, 0xf3, 0x5a, 0xc0, 0x1c, 0xf4, 0x5c, 0x59, 0x65, 0x35, 0xc5, 0x59, 0x5c, 0xc6, 0x13, 0x4c, 0x1c, 0x41, 0x41, 0x3b, 0x00, 0x04, 0xf3, 0x4b, 0x51, 0x36, 0xfa, 0x4a, 0xfc, 0x4c, 0xc3, 0x44, 0xcc, 0x90, 0x4c, 0x30, 0xfa, 0x04, 0x55, 0xf4, 0x39, 0x04, 0x19, 0x0a, 0x1f, 0x11, 0x04, 0x1a, 0xfc, 0x13, 0x9c, 0x51, 0xcc, 0x16, 0x41, 0x9c, 0x54, 0xcc, 0x5c, 0xa1, 0xf3, 0x11, 0x5c, 0x15, 0x43, 0x44, 0x04, 0x09, 0x04, 0x1f, 0xfa, 0x40, 0xb4, 0x5c, 0x5b, 0x43, 0x44, 0xb4, 0x44, 0xc5, 0xc1, 0xf4, 0x34, 0xaf, 0x35, 0xcc, 0xa9, 0xf6, 0x6c, 0x5f, 0xcc, 0x43, 0x15, 0x44, 0x5b, 0xf5, 0xbc, 0x44, 0x4b, 0xcf, 0xf1, 0x41, 0xfa, 0xcc, 0xc6, 0x01, 0x01, 0xca, 0x34, 0x01, 0x41, 0x40, 0x36, 0x6c, 0x49, 0x3c, 0xfc, 0xc4, 0xc1, 0x9c, 0xcf, 0x31, 0x5b, 0xf3, 0x96, 0x0f, 0x4c, 0xcb, 0x41, 0x09, 0x44, 0x1f, 0xca, 0x45, 0x04, 0xa1, 0x5f, 0x34, 0xc1, 0x3c, 0x4f, 0x4c, 0xfc, 0xf6, 0xab, 0xc4, 0xb5, 0xcb, 0x49, 0x44, 0x61, 0x64, 0x44, 0x44, 0x59, 0x01, 0xb4, 0xba, 0x41, 0x40, 0xa9, 0xc4, 0xc1, 0x15, 0x44, 0xcf, 0x0b, 0xb6, 0xa1, 0x13, 0xc4, 0x9a, 0x4f, 0xc0, 0xaf, 0xbb, 0x13, 0x3c, 0x04, 0x3c, 0xf5, 0xc0, 0x6a, 0x36, 0x54, 0x1a, 0xc4, 0x4c, 0xa9, 0x4c, 0xb3, 0xb5, 0x53, 0x44, 0x13, 0xba, 0x1c, 0x34, 0xcc, 0xca, 0x14, 0xcc, 0x9c, 0x94, 0xc4, 0x59, 0xc4, 0x49, 0x51, 0xc4, 0x0f, 0x40, 0xc1, 0x06, 0xb5, 0x05, 0xa4, 0x66, 0x3a, 0x91, 0x94, 0xc0, 0x6c, 0x99, 0x1b, 0xa3, 0x33, 0x15, 0x4b, 0x39, 0x4f, 0x39, 0xca, 0x54, 0x4f, 0x14, 0x9c, 0xcf, 0xab, 0x54, 0x01, 0x41, 0x40, 0x0b, 0x4c, 0xcc, 0xc1, 0x15, 0x34, 0x1a, 0xc5, 0x4b, 0xbc, 0xfc, 0xa4, 0xc4, 0x04, 0x4c, 0x4c, 0x19, 0xc4, 0x6c, 0x91, 0x46, 0x44, 0x15, 0xb6, 0x6c, 0xa3, 0xc3, 0xc1, 0x9b, 0x3c, 0x04, 0x36, 0xc3, 0xbb, 0x30, 0xb5, 0xff, 0xc5, 0x4f, 0x1b, 0xf4, 0x46, 0x9a, 0x46, 0x6b, 0x94, 0xff, 0x1a, 0x99, 0x40, 0xcf, 0x63, 0x44, 0x41, 0xbc, 0x65, 0xb0, 0x3b, 0xb0, 0xca, 0xc9, 0xb4, 0x1c, 0x90, 0xb0, 0xc0, 0x54, 0x61, 0xb4, 0x5c, 0x4c, 0x94, 0x1c, 0x14, 0x1b, 0x44, 0x56, 0x4f, 0xfa, 0x11, 0x0c, 0x14, 0x34, 0x1c, 0x59, 0xaf, 0x44, 0x3c, 0xac, 0x49, 0x9c, 0xbf, 0x1c, 0xb4, 0x41, 0xa4, 0x4f, 0xbc, 0x09, 0x01, 0x0a, 0xf4, 0x0c, 0x41, 0xc9, 0xb4, 0x41, 0xc4, 0xf4, 0x93, 0x04, 0x14, 0xc9, 0xc1, 0xc4, 0x3f, 0xc5, 0xc0, 0xc4, 0xb5, 0x13, 0x45, 0x61, 0xa1, 0x9c, 0x15, 0xbc, 0xa4, 0x01, 0x41, 0x40, 0x0f, 0x0f, 0xcf, 0x5a, 0xac, 0xcc, 0x3b, 0xc6, 0x35, 0x01, 0x6c, 0x43, 0xa4, 0xaa, 0xcc, 0x45, 0xb5, 0x61, 0x6b, 0xa3, 0x0a, 0x9a, 0x0b, 0x43, 0x40, 0xc1, 0x44, 0xa6, 0xf4, 0xac, 0x93, 0x49, 0x49, 0x30, 0x4c, 0xa9, 0x3b, 0x01, 0xc3, 0xf3, 0xa4, 0x13, 0xc1, 0xf3, 0xa1, 0x91, 0x69, 0xfc, 0xc1, 0x33, 0x9a, 0xc6, 0xc0, 0x01, 0x5a, 0x34, 0xa1, 0x4c, 0x44, 0xfb, 0x0c, 0xca, 0x4a, 0x4c, 0xc9, 0x35, 0x4c, 0xb3, 0x11, 0x06, 0x03, 0xc3, 0x34, 0x4c, 0x04, 0xb5, 0x4c, 0xca, 0x4b, 0xcf, 0xa6, 0x4a, 0x66, 0x5b, 0x64, 0x0c, 0xc0, 0xc6, 0x39, 0x64, 0xc0, 0xb4, 0xc4, 0x91, 0x63, 0xb9, 0x3c, 0x1b, 0x10, 0x6c, 0x9c, 0xc0, 0x30, 0x46, 0xcf, 0x41, 0x04, 0x41, 0x1c, 0x4c, 0xfc, 0x6f, 0xbf, 0x1c, 0x5b, 0xab, 0x16, 0xbb, 0x31, 0xb5, 0xb4, 0x13, 0x49, 0xf4, 0xb1, 0x4c, 0xa9, 0xac};
unsigned int certificates_esp8266_bin_key_len = 1190;

unsigned char certificates_esp8266_bin_crt[] = { 0x30, 0x41, 0x03, 0x5a, 0x30, 0x41, 0x01, 0x41, 0xa0, 0x03, 0x01, 0x01, 0x01, 0x01, 0x15, 0x00, 0x4a, 0x91, 0xc5, 0xbb, 0x44, 0x14, 0x4a, 0x69, 0xf5, 0x51, 0x41, 0x69, 0x4c, 0x13, 0xc4, 0xb4, 0x49, 0xc6, 0x1f, 0x6f, 0x30, 0x0c, 0xaa, 0x09, 0x1a, 0x46, 0x44, 0x46, 0xf4, 0x0c, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30, 0x4c, 0x31, 0x4b, 0x30, 0x49, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x0c, 0x41, 0x41, 0x6c, 0x61, 0x4a, 0x6f, 0x6c, 0x10, 0x54, 0x65, 0x61, 0x10, 0x53, 0x65, 0x41, 0x46, 0x69, 0x63, 0x65, 0x43, 0x10, 0x4f, 0x3c, 0x41, 0x6c, 0x61, 0x4a, 0x6f, 0x6c, 0x1c, 0x63, 0x6f, 0x6c, 0x10, 0x49, 0x6c, 0x63, 0x1c, 0x10, 0x4c, 0x3c, 0x53, 0x65, 0x61, 0x44, 0x44, 0x6c, 0x65, 0x10, 0x53, 0x54, 0x3c, 0x54, 0x61, 0x43, 0x64, 0x69, 0x6c, 0x64, 0x44, 0x6f, 0x6c, 0x10, 0x43, 0x3c, 0x55, 0x53, 0x30, 0x1c, 0x14, 0x0c, 0x31, 0x36, 0x30, 0x39, 0x30, 0x31, 0x31, 0x35, 0x34, 0x31, 0x31, 0x30, 0x5a, 0x14, 0x0c, 0x34, 0x39, 0x31, 0x31, 0x33, 0x31, 0x31, 0x33, 0x35, 0x39, 0x35, 0x39, 0x5a, 0x30, 0x1c, 0x31, 0x1c, 0x30, 0x1a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x13, 0x41, 0x54, 0x53, 0x10, 0x49, 0x6f, 0x54, 0x10, 0x43, 0x65, 0x41, 0x44, 0x69, 0x66, 0x69, 0x63, 0x61, 0x44, 0x65, 0x30, 0x41, 0x01, 0x11, 0x30, 0x0c, 0x06, 0x09, 0x1a, 0x46, 0x44, 0x46, 0xf4, 0x64, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x41, 0x01, 0x0f, 0x00, 0x30, 0x41, 0x01, 0x0a, 0x01, 0x41, 0x01, 0x01, 0x64, 0x91, 0x35, 0x01, 0x09, 0x34, 0xc3, 0x60, 0x00, 0xf5, 0xc5, 0x4b, 0x6a, 0x1f, 0x4b, 0x49, 0xcc, 0xb3, 0x49, 0xcc, 0xca, 0x03, 0xc4, 0x9f, 0xab, 0x4a, 0x56, 0x5a, 0x44, 0x45, 0x3c, 0xfc, 0xac, 0x0f, 0xaa, 0xf4, 0x56, 0x15, 0xc1, 0xcb, 0x1a, 0x53, 0x60, 0xc1, 0x0a, 0x1f, 0x1c, 0x16, 0x96, 0xc5, 0xaf, 0xc3, 0x65, 0xc6, 0x4c, 0xc3, 0xa1, 0xc5, 0x01, 0x4f, 0x69, 0x14, 0xc5, 0x9c, 0x3c, 0xc4, 0x1c, 0x34, 0x44, 0x54, 0x54, 0x1a, 0xac, 0xbc, 0xc4, 0x5a, 0x44, 0x9c, 0x51, 0x43, 0x1c, 0x04, 0x39, 0xc4, 0x4c, 0x4f, 0x44, 0x1c, 0x43, 0xc1, 0xc9, 0x4b, 0xac, 0x63, 0x59, 0x31, 0x15, 0x4c, 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unsigned int certificates_esp8266_bin_crt_len = 862;

const char* AWS_endpoint = "aaaaaaaaaaaaaa.iot.us-west-2.amazonaws.com"; //MQTT broker ip
const char* ssid = "Wifi_ssid";
const char* password = "Wifi_password";


void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i = 0; i < length; i++)
    Serial.print((char)payload[i]);

  Serial.println();
}


WiFiClientSecure espClient;
PubSubClient client(AWS_endpoint, 8883, callback, espClient); //set  MQTT port number to 8883
long lastMsg = 0;
char msg[50];
int value = 0;

void setup() {
  Serial.begin (115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  espClient.setCertificate(certificates_esp8266_bin_crt, certificates_esp8266_bin_crt_len);
  espClient.setPrivateKey(certificates_esp8266_bin_key, certificates_esp8266_bin_key_len);
  //espClient.setCACert(certificates_esp8266_bin_CA, certificates_esp8266_bin_CA_len);
}

void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (client.connect(clientId.c_str())) {
      Serial.println("connected");
      client.subscribe("inTopic");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}


void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  long now = millis();
  if (now - lastMsg > 2000) {
    lastMsg = now;
    ++value;
    snprintf (msg, 75, "hello world #%ld", value);
    Serial.print("Publish message: ");
    Serial.println(msg);
    client.publish("outTopic", msg);
	Serial.print("Heap: "); Serial.println(ESP.getFreeHeap()); //Low heap can cause problems
  }
}