https://devzone.nordicsemi.com/f/nordic-q-a/53710/aes-encryption-not-working-in-nrf52840Hello, I am developing in Windows 10 machine in visual studio code. I cannot use Seggar studio. Devloping for nRF52840 dongle with nRF15 sdk. I have written the below code to test the simple AES encryption in ECB mode. However, particularly at theen-USTelligent Community 13Mon, 28 Oct 2019 08:39:37 GMThttps://devzone.nordicsemi.com/thread/217001?ContentTypeID=1Mon, 28 Oct 2019 08:39:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f7c3344b-74fb-4b44-ace2-e809cbb9de6eAyushMet<p>Today I got it completely running fine without any problem. Firstly, in line 21 of main.c, change key[128] to data_in[128]. Secondly, in lines 43,44,45 change 16 to 128 because our data to be encrypted is 128 bytes not 16 bytes. Thirdly, in line 40, change data_in[16] to key[16] because a key length is 128 bits or 16 bytes. And at last, all that was needed is:&nbsp;</p> <p>In the Makefile, under the library, include the following:</p> <div> <div><span>#&nbsp;Libraries&nbsp;common&nbsp;to&nbsp;all&nbsp;targets</span></div> <div><span>LIB_FILES</span><span>&nbsp;+=&nbsp;</span><span>\</span></div> <div><span>$(</span><span>SDK_ROOT</span><span>)</span><span>/external/nrf_cc310/lib/cortex-m4/hard-float/libnrf_cc310_0.9.12.a&nbsp;</span><span>\</span></div> <div><span></span></div> <div><span></span></div> <div><span>Th whole problem got resolved. The data got correctly encrypted. <span class="emoticon" data-url="https://devzone.nordicsemi.com/cfs-file/__key/system/emoji/1f642.svg" title="Slight smile">&#x1f642;</span> Hopefully it can help someone else exploring crypto libraries.</span></div> </div><div style="clear:both;"></div>