ECC608 Crypto Chip: Random Number Generator

Introduction

In this tutorial, we will explore how to use the ECC608 Crypto Chip on a CONTROLLINO MICRO board to generate truly random numbers. This is particularly useful in applications requiring high levels of security, such as cryptographic operations, secure communications, or any scenario where unpredictability is crucial.

Prerequisites

• Installed Arduino IDE.
• CONTROLLINO MICRO board.

Example Code

Please grab the following example .ino file from Github:

Step-by-Step Guide

Step 1: Setup the Arduino Environment

1. Connect your MICRO to your computer.
2. Open the Arduino IDE.
3. Ensure that the appropriate board and port are selected in the Tools menu.

Step 2: Understanding the Provided Code

#include <SPI.h>
#include <ArduinoECCX08.h>

void setup() {
  Serial.begin(115200);
  while (!Serial);
  delay(2000);

  Wire.setSDA(2);
  Wire.setSCL(3);
  
  if (!ECCX08.begin()) {
    Serial.println("Failed to communicate with ECC508/ECC608!");
    while (1);
  }

  if (!ECCX08.locked()) {
    Serial.println("The ECC508/ECC608 is not locked!");
    while (1);
  }
}

void loop() {
  Serial.print("Random number = ");
  Serial.println(ECCX08.random(65535));

  delay(1000);
}

Code Breakdown

• Initialization: The setup() function initializes serial communication and sets up the I2C communication with specific SDA and SCL pins. It also checks if the ECC608 chip is properly communicating and locked for secure operations.
• Generating Random Numbers: The loop() function continuously generates a random number using ECCX08.random(65535) and prints it to the Serial Monitor every second.

Step 3: Running the Code

1. Copy the provided code into a new sketch in the Arduino IDE.
2. Upload the sketch to your CONTROLLINO MICRO.
3. Open the Serial Monitor (Tools > Serial Monitor) to view the random numbers being generated.

Troubleshooting

• If the Serial Monitor displays an error related to the ECC608 chip, ensure that the chip is correctly configured and locked.
• For any issues related to the Arduino IDE or board connections, consult the official Arduino forums or documentation.

Conclusion

By following this tutorial, you have successfully used the ECC608 Crypto Chip on your CONTROLLINO MICRO to generate truly random numbers. This functionality can be integrated into larger projects where secure random number generation is required.

Feel free to modify the code to suit your specific application needs, and explore other capabilities of the ECC608 chip to enhance the security of your projects.