SecurityPersonalizer.ino: randomized key not shown after first step



  • Hi,

    I'm trying to personalize my ATSHA204A as documented here:
    https://www.mysensors.org/about/signing#how-this-is-done

    So I set this values:

    Enable LOCK_CONFIGURATION
    Disable LOCK_DATA
    Enable SKIP_KEY_STORAGE
    Disable SKIP_UART_CONFIRMATION
    Disable USER_KEY
    

    But in serial console - no randomized key is shown -as written in documentation "Execute the sketch on the “master” device to obtain a randomized key. Save this key to a secure location and keep it confidential so that you can retrieve it if you need to personalize more devices later on."

    If I'm checking the code it's clear - because of disabled SKIP_KEY_STORAGE:

    #ifdef SKIP_KEY_STORAGE
    	Serial.println(F("Disable SKIP_KEY_STORAGE to store key."));
    #else
    #ifdef USER_KEY
    	memcpy(key, user_key_data, 32);
    	Serial.println(F("Using this user supplied HMAC key:"));
    #else
    	// Retrieve random value to use as key
    

    So I think documentation is wrong at this point or do I understand it incorrectly?

    Best regards,
    Chris


  • Contest Winner

    @nog76 you are probably right. Thanks for reporting. A new release is soon to come which will change things quite a lot and documentation will update with that update.


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