AES example for SAM.

This file defines a useful set of functions for the AES on SAM devices.

#include <asf.h>
#include <string.h>

Macros
#define	AES_EXAMPLE_REFBUF_SIZE 4

Functions
static void	aes_callback (void)
	The AES interrupt call back function. More...

static void	cbc_mode_test (void)
	CBC mode encryption and decryption test. More...

static void	cfb128_mode_test (void)
	CFB128 mode encryption and decryption test. More...

static void	configure_console (void)
	Configure serial console. More...

static void	ctr_mode_test (void)
	CTR mode encryption and decryption test. More...

static void	display_menu (void)
	Display the user menu on the terminal. More...

static void	ecb_mode_test (void)
	ECB mode encryption and decryption test. More...

int	main (void)
	The main function. More...

static void	ofb_mode_test (void)
	OFB mode encryption and decryption test. More...

Variables
struct aes_config	g_aes_cfg
	AES configuration. More...

static uint32_t	output_data [AES_EXAMPLE_REFBUF_SIZE]

volatile bool	state = false

sample data from NIST-800-38A appendix F
uint32_t	ref_plain_text [AES_EXAMPLE_REFBUF_SIZE]
	Reference plain data. More...

uint32_t	ref_cipher_text_ecb [AES_EXAMPLE_REFBUF_SIZE]
	Reference ECB cipher data. More...

uint32_t	ref_cipher_text_cbc [AES_EXAMPLE_REFBUF_SIZE]
	Reference CBC cipher data. More...

uint32_t	ref_cipher_text_cfb128 [AES_EXAMPLE_REFBUF_SIZE]
	Reference CFB128 cipher data. More...

uint32_t	ref_cipher_text_ofb [AES_EXAMPLE_REFBUF_SIZE]
	Reference OFB cipher data. More...

uint32_t	ref_cipher_text_ctr [AES_EXAMPLE_REFBUF_SIZE]
	Reference CTR cipher data. More...

const uint32_t	key128 [4]
	Cipher 128 bits key array. More...

const uint32_t	init_vector [4]
	Init vector array for ECB, CBC, CFB128 and OFB mode. More...

const uint32_t	init_vector_ctr [4]
	Init vector array for CTR mode. More...

#define AES_EXAMPLE_REFBUF_SIZE 4

static void aes_callback ( void )

static

The AES interrupt call back function.

References aes_read_output_data(), output_data, and state.

Referenced by main().

static void cbc_mode_test ( void )

static

CBC mode encryption and decryption test.

References AES_AUTO_START, AES_CBC_MODE, AES_CFB_SIZE_128, AES_DECRYPTION, AES_ENCRYPTION, AES_KEY_SIZE_128, aes_set_config(), aes_write_initvector(), aes_write_input_data(), aes_write_key(), aes_config::cfb_size, aes_config::encrypt_mode, g_aes_cfg, init_vector, key128, aes_config::key_size, aes_config::lod, aes_config::opmode, output_data, ref_cipher_text_cbc, ref_plain_text, aes_config::start_mode, and state.

Referenced by main().

static void cfb128_mode_test ( void )

static

CFB128 mode encryption and decryption test.

References AES_AUTO_START, AES_CFB_MODE, AES_CFB_SIZE_128, AES_DECRYPTION, AES_ENCRYPTION, AES_KEY_SIZE_128, aes_set_config(), aes_write_initvector(), aes_write_input_data(), aes_write_key(), aes_config::cfb_size, aes_config::encrypt_mode, g_aes_cfg, init_vector, key128, aes_config::key_size, aes_config::lod, aes_config::opmode, output_data, ref_cipher_text_cfb128, ref_plain_text, aes_config::start_mode, and state.

Referenced by main().

static void configure_console ( void )

static

Configure serial console.

References uart_rs232_options::baudrate, and stdio_serial_init().

Referenced by main().

static void ctr_mode_test ( void )

static

CTR mode encryption and decryption test.

References AES_AUTO_START, AES_CFB_SIZE_128, AES_CTR_MODE, AES_DECRYPTION, AES_ENCRYPTION, AES_KEY_SIZE_128, aes_set_config(), aes_write_initvector(), aes_write_input_data(), aes_write_key(), aes_config::cfb_size, aes_config::encrypt_mode, g_aes_cfg, init_vector_ctr, key128, aes_config::key_size, aes_config::lod, aes_config::opmode, output_data, ref_cipher_text_ctr, ref_plain_text, aes_config::start_mode, and state.

Referenced by main().

static void display_menu ( void )

static

Display the user menu on the terminal.

Referenced by main().

static void ecb_mode_test ( void )

static

ECB mode encryption and decryption test.

References AES_AUTO_START, AES_CFB_SIZE_128, AES_DECRYPTION, AES_ECB_MODE, AES_ENCRYPTION, AES_KEY_SIZE_128, aes_set_config(), aes_write_input_data(), aes_write_key(), aes_config::cfb_size, aes_config::encrypt_mode, g_aes_cfg, key128, aes_config::key_size, aes_config::lod, aes_config::opmode, output_data, ref_cipher_text_ecb, ref_plain_text, aes_config::start_mode, and state.

Referenced by main().

int main ( void )

The main function.

References aes_callback(), aes_enable(), aes_get_config_defaults(), aes_init(), AES_INTERRUPT_DATA_READY, aes_set_callback(), board_init(), BOARD_NAME, cbc_mode_test(), cfb128_mode_test(), configure_console(), ctr_mode_test(), display_menu(), ecb_mode_test(), g_aes_cfg, ofb_mode_test(), and sysclk_init().

static void ofb_mode_test ( void )

static

OFB mode encryption and decryption test.

References AES_AUTO_START, AES_CFB_SIZE_128, AES_DECRYPTION, AES_ENCRYPTION, AES_KEY_SIZE_128, AES_OFB_MODE, aes_set_config(), aes_write_initvector(), aes_write_input_data(), aes_write_key(), aes_config::cfb_size, aes_config::encrypt_mode, g_aes_cfg, init_vector, key128, aes_config::key_size, aes_config::lod, aes_config::opmode, output_data, ref_cipher_text_ofb, ref_plain_text, aes_config::start_mode, and state.

Referenced by main().

struct aes_config g_aes_cfg

AES configuration.

const uint32_t init_vector[4]

Initial value:

= {
    0x03020100,
    0x07060504,
    0x0b0a0908,
    0x0f0e0d0c
}

Init vector array for ECB, CBC, CFB128 and OFB mode.

Referenced by cbc_mode_test(), cfb128_mode_test(), ofb_mode_test(), run_cbc_mode_test(), run_cfb128_mode_test(), and run_ofb_mode_test().

const uint32_t init_vector_ctr[4]

Initial value:

= {
    0xf3f2f1f0,
    0xf7f6f5f4,
    0xfbfaf9f8,
    0xfffefdfc
}

Init vector array for CTR mode.

Referenced by ctr_mode_test(), and run_ctr_mode_test().

const uint32_t key128[4]

Initial value:

= {
    0x16157e2b,
    0xa6d2ae28,
    0x8815f7ab,
    0x3c4fcf09
}

Cipher 128 bits key array.

Referenced by cbc_mode_test(), cfb128_mode_test(), ctr_mode_test(), ecb_mode_test(), ofb_mode_test(), run_cbc_mode_test(), run_cfb128_mode_test(), run_ctr_mode_test(), run_ecb_mode_test(), and run_ofb_mode_test().

uint32_t output_data[AES_EXAMPLE_REFBUF_SIZE]

static

Referenced by aes_callback(), cbc_mode_test(), cfb128_mode_test(), ctr_mode_test(), ecb_mode_test(), and ofb_mode_test().

uint32_t ref_cipher_text_cbc[AES_EXAMPLE_REFBUF_SIZE]

Initial value:

= {
    0xacab4976,
    0x46b21981,
    0x9b8ee9ce,
    0x7d19e912
}

Reference CBC cipher data.

Referenced by cbc_mode_test(), and run_cbc_mode_test().

uint32_t ref_cipher_text_cfb128[AES_EXAMPLE_REFBUF_SIZE]

Initial value:

= {
    0x2ed93f3b,
    0x20ad2db7,
    0xf8493433,
    0x4afb3ce8
}

Reference CFB128 cipher data.

Referenced by cfb128_mode_test(), and run_cfb128_mode_test().

uint32_t ref_cipher_text_ctr[AES_EXAMPLE_REFBUF_SIZE]

Initial value:

= {
    0x91614d87,
    0x26e320b6,
    0x6468ef1b,
    0xceb60d99
}

Reference CTR cipher data.

Referenced by ctr_mode_test(), and run_ctr_mode_test().

uint32_t ref_cipher_text_ecb[AES_EXAMPLE_REFBUF_SIZE]

Initial value:

= {
    0xb47bd73a,
    0x60367a0d,
    0xf3ca9ea8,
    0x97ef6624
}

Reference ECB cipher data.

Referenced by ecb_mode_test(), and run_ecb_mode_test().

uint32_t ref_cipher_text_ofb[AES_EXAMPLE_REFBUF_SIZE]

Initial value:

= {
    0x2ed93f3b,
    0x20ad2db7,
    0xf8493433,
    0x4afb3ce8
}

Reference OFB cipher data.

Referenced by ofb_mode_test(), and run_ofb_mode_test().

uint32_t ref_plain_text[AES_EXAMPLE_REFBUF_SIZE]

Initial value:

= {
    0xe2bec16b,
    0x969f402e,
    0x117e3de9,
    0x2a179373
}

Reference plain data.

Referenced by cbc_mode_test(), cfb128_mode_test(), ctr_mode_test(), ecb_mode_test(), ofb_mode_test(), run_cbc_mode_test(), run_cfb128_mode_test(), run_ctr_mode_test(), run_ecb_mode_test(), and run_ofb_mode_test().

volatile bool state = false

Referenced by aes_callback(), cbc_mode_test(), cfb128_mode_test(), ctr_mode_test(), ecb_mode_test(), netif_add(), ofb_mode_test(), platform_interface_callback(), and sd_mmc_select_slot().

Microchip® Advanced Software Framework

Macros

Functions

Variables