I miss undertanding the "Intro to Application-level Security Using the ECB Peripheral" ?

I miss undertanding the "Intro to Application-level Security Using the ECB Peripheral" ?https://devzone.nordicsemi.com/f/nordic-q-a/11747/i-miss-undertanding-the-intro-to-application-level-security-using-the-ecb-peripheralHi, The artical form this link is great ! devzone.nordicsemi.com/.../ but I've some interogations. the clear text contains the nonce value; 12 random bytes starting at index 4 and the counter value starting at index 0. I didn't understand whaten-USTelligent Community 13Mon, 08 Feb 2016 11:53:00 GMTRE: I miss undertanding the "Intro to Application-level Security Using the ECB Peripheral" ?https://devzone.nordicsemi.com/thread/44435?ContentTypeID=1Mon, 08 Feb 2016 11:53:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:79631f84-4c13-47f4-8ab5-28b3ed412d6fØyvind Karlsen<p>Hi,</p> <p>The ciphertext contains the encrypted message. Please refer to the textual explanation in the blogpost.</p> <p>Best regards,</p> <p>Øyvind</p><div style="clear:both;"></div>