https://devzone.nordicsemi.com/f/nordic-q-a/62861/crypto-aes-ecb-padding-byte-mechanismHi Team, If we send 20 bytes of data to AES-ECB 128 bit (CC310/ mbed TLS) Crypto engines for Encryption/Decryption due to bytes padding, how many bytes it will become as final output. Could any body confirm on this one. Regards, Srinivas.Ven-USTelligent Community 13Mon, 22 Jun 2020 15:09:56 GMThttps://devzone.nordicsemi.com/thread/256255?ContentTypeID=1Mon, 22 Jun 2020 15:09:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e4fad372-6068-4e1f-8e54-66a25f7e27baEinar Thorsrud<p>Hi Srinivas,</p> <p>The output is a multiple of 16 bytes, so there will be 12 padding bytes and a total of 32 bytes.</p> <p>Einar</p><div style="clear:both;"></div>