# Equal symmetric encryption and decryption algorithm AES-CTR ## Overview **aes_ctr_mode_example** the example project shows the implementation of aes-ctr mode of equal symmetric encryption and decryption algorithm. - The equal symmetry encryption and decryption algorithm of this project adopts aes128 encryption algorithm CTR counting mode to complete the module encryption and decryption test. ## Board Setting - No special settings ## Running the example When the project runs correctly, and the serial port terminal will output the following information: ```console tc_start() - Performing AES128-CTR mode tests: Performing CTR tests: CTR test #1 (encryption SP 800-38a tests): =================================================================== PASS - test_1_and_2. CTR test #2 (decryption SP 800-38a tests): =================================================================== PASS - test_1_and_2. All CTR tests succeeded! =================================================================== PASS - main. =================================================================== PROJECT EXECUTION SUCCESSFUL ```