Workflow

Define sample data from NIST-800-38A appendix F for ECB mode.

#define AES_EXAMPLE_REFBUF_SIZE 4

/* @{ */
uint32_t ref_plain_text[AES_EXAMPLE_REFBUF_SIZE] = {
    0xe2bec16b,
    0x969f402e,
    0x117e3de9,
    0x2a179373
};

uint32_t ref_cipher_text_ecb[AES_EXAMPLE_REFBUF_SIZE] = {
    0xb47bd73a,
    0x60367a0d,
    0xf3ca9ea8,
    0x97ef6624
};

uint32_t ref_cipher_text_cbc[AES_EXAMPLE_REFBUF_SIZE] = {
    0xacab4976,
    0x46b21981,
    0x9b8ee9ce,
    0x7d19e912
};

uint32_t ref_cipher_text_cfb128[AES_EXAMPLE_REFBUF_SIZE] = {
    0x2ed93f3b,
    0x20ad2db7,
    0xf8493433,
    0x4afb3ce8
};

uint32_t ref_cipher_text_ofb[AES_EXAMPLE_REFBUF_SIZE] = {
    0x2ed93f3b,
    0x20ad2db7,
    0xf8493433,
    0x4afb3ce8
};

uint32_t ref_cipher_text_ctr[AES_EXAMPLE_REFBUF_SIZE] = {
    0x91614d87,
    0x26e320b6,
    0x6468ef1b,
    0xceb60d99
};

const uint32_t key128[4] = {
    0x16157e2b,
    0xa6d2ae28,
    0x8815f7ab,
    0x3c4fcf09
};

const uint32_t init_vector[4] = {
    0x03020100,
    0x07060504,
    0x0b0a0908,
    0x0f0e0d0c
};

const uint32_t init_vector_ctr[4] = {
    0xf3f2f1f0,
    0xf7f6f5f4,
    0xfbfaf9f8,
    0xfffefdfc
};

/* @} */

Create related module variable and software instance structure.

/* Output data array */
static uint32_t output_data[AES_EXAMPLE_REFBUF_SIZE];
/* State indicate */
volatile bool state = false;

struct aes_config g_aes_cfg;
struct aes_module aes_instance;
struct usart_module usart_instance;

3.
Configure, initialize, and enable AES module.
1. 3.1.
  Configuration AES struct, which can be filled out to adjust the configuration of a physical AES peripheral.
```
aes_get_config_defaults(&g_aes_cfg);
```
2. 3.2.
  Initialize the AES configuration struct with the module's default values.
```
aes_init(&aes_instance,AES, &g_aes_cfg);
```
3. 3.3.
  Enable the AES module.
```
aes_enable(&aes_instance);
```
4. 3.4.
  Register and enable the AES module callback.
```
/* Enable AES interrupt. */
aes_register_callback(aes_callback,AES_CALLBACK_ENCRYPTION_COMPLETE);
aes_enable_callback(&aes_instance,AES_CALLBACK_ENCRYPTION_COMPLETE);
```