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Noah Koontz 2020-11-28 21:33:53 -08:00 committed by GitHub
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#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: Amazon Root CA 1
* Subject: CN=Amazon Root CA 1,O=Amazon,C=US
*/
#define TAs_NUM 1
static const unsigned char TA_DN0[] = {
0x30, 0x39, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13,
0x02, 0x55, 0x53, 0x31, 0x0f, 0x30, 0x0d, 0x06, 0x03, 0x55, 0x04, 0x0a,
0x13, 0x06, 0x41, 0x6d, 0x61, 0x7a, 0x6f, 0x6e, 0x31, 0x19, 0x30, 0x17,
0x06, 0x03, 0x55, 0x04, 0x03, 0x13, 0x10, 0x41, 0x6d, 0x61, 0x7a, 0x6f,
0x6e, 0x20, 0x52, 0x6f, 0x6f, 0x74, 0x20, 0x43, 0x41, 0x20, 0x31,
};
static const unsigned char TA_RSA_N0[] = {
0xb2, 0x78, 0x80, 0x71, 0xca, 0x78, 0xd5, 0xe3, 0x71, 0xaf, 0x47, 0x80,
0x50, 0x74, 0x7d, 0x6e, 0xd8, 0xd7, 0x88, 0x76, 0xf4, 0x99, 0x68, 0xf7,
0x58, 0x21, 0x60, 0xf9, 0x74, 0x84, 0x01, 0x2f, 0xac, 0x02, 0x2d, 0x86,
0xd3, 0xa0, 0x43, 0x7a, 0x4e, 0xb2, 0xa4, 0xd0, 0x36, 0xba, 0x01, 0xbe,
0x8d, 0xdb, 0x48, 0xc8, 0x07, 0x17, 0x36, 0x4c, 0xf4, 0xee, 0x88, 0x23,
0xc7, 0x3e, 0xeb, 0x37, 0xf5, 0xb5, 0x19, 0xf8, 0x49, 0x68, 0xb0, 0xde,
0xd7, 0xb9, 0x76, 0x38, 0x1d, 0x61, 0x9e, 0xa4, 0xfe, 0x82, 0x36, 0xa5,
0xe5, 0x4a, 0x56, 0xe4, 0x45, 0xe1, 0xf9, 0xfd, 0xb4, 0x16, 0xfa, 0x74,
0xda, 0x9c, 0x9b, 0x35, 0x39, 0x2f, 0xfa, 0xb0, 0x20, 0x50, 0x06, 0x6c,
0x7a, 0xd0, 0x80, 0xb2, 0xa6, 0xf9, 0xaf, 0xec, 0x47, 0x19, 0x8f, 0x50,
0x38, 0x07, 0xdc, 0xa2, 0x87, 0x39, 0x58, 0xf8, 0xba, 0xd5, 0xa9, 0xf9,
0x48, 0x67, 0x30, 0x96, 0xee, 0x94, 0x78, 0x5e, 0x6f, 0x89, 0xa3, 0x51,
0xc0, 0x30, 0x86, 0x66, 0xa1, 0x45, 0x66, 0xba, 0x54, 0xeb, 0xa3, 0xc3,
0x91, 0xf9, 0x48, 0xdc, 0xff, 0xd1, 0xe8, 0x30, 0x2d, 0x7d, 0x2d, 0x74,
0x70, 0x35, 0xd7, 0x88, 0x24, 0xf7, 0x9e, 0xc4, 0x59, 0x6e, 0xbb, 0x73,
0x87, 0x17, 0xf2, 0x32, 0x46, 0x28, 0xb8, 0x43, 0xfa, 0xb7, 0x1d, 0xaa,
0xca, 0xb4, 0xf2, 0x9f, 0x24, 0x0e, 0x2d, 0x4b, 0xf7, 0x71, 0x5c, 0x5e,
0x69, 0xff, 0xea, 0x95, 0x02, 0xcb, 0x38, 0x8a, 0xae, 0x50, 0x38, 0x6f,
0xdb, 0xfb, 0x2d, 0x62, 0x1b, 0xc5, 0xc7, 0x1e, 0x54, 0xe1, 0x77, 0xe0,
0x67, 0xc8, 0x0f, 0x9c, 0x87, 0x23, 0xd6, 0x3f, 0x40, 0x20, 0x7f, 0x20,
0x80, 0xc4, 0x80, 0x4c, 0x3e, 0x3b, 0x24, 0x26, 0x8e, 0x04, 0xae, 0x6c,
0x9a, 0xc8, 0xaa, 0x0d,
};
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_ */

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/*
Connect to AWS IOT using SSLClient and Wiz850io Ethernet Mdoule
AWS_Root_CA.h is the trust anchor created using the Root CA from:
https://www.amazontrust.com/repository/AmazonRootCA1.pem
You can re-create it again using the python file present
in SSLClient/tools/pycert_bearssl/pycert_bearssl.py
python pycert_bearssl.py convert --no-search <certificate PEM file>
refer: https://github.com/OPEnSLab-OSU/SSLClient/issues/17#issuecomment-700143405
Circuit:
Ethernet shield WIZ850io:
CS 10
MOSI 11
MISO 12
SCK 13
created 10 October 2020
by Ram Rohit Gannavarapu
*/
#include <SPI.h>
#include <EthernetLarge.h>
#include <SSLClient.h>
#include <PubSubClient.h>
#include "AWS_Root_CA.h" // This file is created using AmazonRootCA1.pem from https://www.amazontrust.com/repository/AmazonRootCA1.pem
#define THING_NAME "<Thing_Name>"
#define MQTT_PACKET_SIZE 1024
void MQTTPublish(const char *topic, char *payload);
void updateThing();
const char my_cert[] = \
"-----BEGIN CERTIFICATE-----\n" \
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\n" \
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\n" \
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\n" \
"-----END CERTIFICATE-----\n";
const char my_key[] = \
"-----BEGIN RSA PRIVATE KEY-----\n" \
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\n" \
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\n" \
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\n" \
"-----END RSA PRIVATE KEY-----\n";
SSLClientParameters mTLS = SSLClientParameters::fromPEM(my_cert, sizeof my_cert, my_key, sizeof my_key);
const char* mqttServer = "xxxxxxxxxxxx-ats.iot.us-east-1.amazonaws.com";
const char publishShadowUpdate[] = "$aws/things/" THING_NAME "/shadow/update";
char publishPayload[MQTT_PACKET_SIZE];
char *subscribeTopic[5] =
{
"$aws/things/" THING_NAME "/shadow/update/accepted",
"$aws/things/" THING_NAME "/shadow/update/rejected",
"$aws/things/" THING_NAME "/shadow/update/delta",
"$aws/things/" THING_NAME "/shadow/get/accepted",
"$aws/things/" THING_NAME "/shadow/get/rejected"
};
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();
}
EthernetClient ethClient;
SSLClient ethClientSSL(ethClient, TAs, (size_t)TAs_NUM, A5);
PubSubClient mqtt(mqttServer, 8883, callback, ethClientSSL);
// Enter a MAC address for your controller below.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
byte mac[] = {
0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02
};
void reconnect()
{
while (!mqtt.connected())
{
Serial.print("Attempting MQTT connection...");
if (mqtt.connect("arduinoClient"))
{
Serial.println("connected");
for (int i = 0; i < 5; i++)
{
// Serial.println(subscribeTopic[i]);
mqtt.subscribe(subscribeTopic[i]);
ethClientSSL.flush();
}
Serial.println("Started updateThing ");
updateThing();
Serial.println("Done updateThing ");
}
else
{
Serial.print("failed, rc=");
Serial.print(mqtt.state());
Serial.println(" try again in 5 seconds");
delay(5000);
}
}
}
void setup() {
// You can use Ethernet.init(pin) to configure the CS pin
Ethernet.init(10); // Most Arduino shields
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
ethClientSSL.setMutualAuthParams(mTLS);
mqtt.setBufferSize(MQTT_PACKET_SIZE);
// start the Ethernet connection:
Serial.println("Initialize Ethernet with DHCP:");
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
} else if (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
}
// no point in carrying on, so do nothing forevermore:
while (true) {
delay(1);
}
}
// print your local IP address:
Serial.print("My IP address: ");
Serial.println(Ethernet.localIP());
}
void loop() {
if (!mqtt.connected())
{
reconnect();
}
mqtt.loop();
}
void updateThing()
{
strcpy(publishPayload, "{\"state\": {\"reported\": {\"powerState\":\"ON\"}}}");
MQTTPublish(publishShadowUpdate, publishPayload);
}
void MQTTPublish(const char *topic, char *payload)
{
mqtt.publish(topic, payload);
ethClientSSL.flush();
Serial.print("Published [");
Serial.print(topic);
Serial.print("] ");
Serial.println(payload);
}