quick_start_basic.c File Reference

AES example for SAM.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

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

Macros
#define	AES_EXAMPLE_REFBUF_SIZE   4
	[cipher_data] More...

Functions
static void	configure_usart (void)
	[module_var] More...
static void	ecb_mode_test (void)
	ECB mode encryption and decryption test. More...
int	main (void)
	[setup] More...

Variables
struct aes_module	aes_instance
struct aes_config	g_aes_cfg
static uint32_t	output_data [AES_EXAMPLE_REFBUF_SIZE]
	[cipher_data] More...
volatile bool	state = false
struct usart_module	usart_instance
	[module_inst] More...
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...
const uint32_t	key128 [4]
	Cipher 128 bits key array. More...

#define AES_EXAMPLE_REFBUF_SIZE   4

[cipher_data]

static void configure_usart ( void  )

static

[module_var]

[setup] Configure usart.

References usart_config::baudrate, usart_config::mux_setting, usart_config::pinmux_pad0, usart_config::pinmux_pad1, usart_config::pinmux_pad2, usart_config::pinmux_pad3, usart_enable(), usart_get_config_defaults(), and usart_instance.

static void ecb_mode_test ( void  )

static

ECB mode encryption and decryption test.

[encryption_mode]

[encryption_mode]

[decryption_mode]

[decryption_mode]

References AES_AUTO_START, AES_CFB_SIZE_128, aes_clear_new_message(), AES_DECRYPTION, AES_ECB_MODE, AES_ENCRYPTION, AES_ENCRYPTION_COMPLETE, aes_get_status(), aes_instance, AES_KEY_SIZE_128, aes_read_output_data(), aes_set_config(), aes_set_new_message(), 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

)

[setup]

The main function.

[setup_init]

[setup_config]

[setup_config]

[setup_config_defaults]

[setup_config_defaults] [module_enable]

[module_enable]

[setup_init]

[encryption_decryption]

[encryption_decryption]

References aes_enable(), aes_get_config_defaults(), aes_init(), aes_instance, configure_usart(), ecb_mode_test(), g_aes_cfg, and system_init().

struct aes_module aes_instance

struct aes_config g_aes_cfg

const uint32_t key128[4]

Initial value:

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

Cipher 128 bits key array.

uint32_t output_data[AES_EXAMPLE_REFBUF_SIZE]

static

[cipher_data]

[module_var]

Referenced by ecb_mode_test().

uint32_t ref_cipher_text_ecb[AES_EXAMPLE_REFBUF_SIZE]

Initial value:

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

Reference ECB cipher data.

uint32_t ref_plain_text[AES_EXAMPLE_REFBUF_SIZE]

Initial value:

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

Reference plain data.

volatile bool state = false

struct usart_module usart_instance

[module_inst]