#include "contiki.h"
#include "net/ip/uip.h"
#include "aes-ccm.h"
#include "aes.h"
#include "dev/watchdog.h"
#include <stdio.h>
#include <string.h>

Macros
#define	aes_ccm_memcpy memcpy

#define	BLOCK_SIZE 16

#define	CBCMAC_PRINTF(...)

#define	CTR_MIC_PRINTF(...)

#define	CTR_PRINTF(...)

#define	L_SIZELEN 2 /* Size field length: 2 to 8 bytes */

#define	NONCE_LEN (15-L_SIZELEN) /* Nonce length: fixed to 13 bytes */

#define	PRINT_CBCMAC_BLOCKS 0

#define	PRINT_CTR_BLOCKS 0

#define	PRINT_CTR_MIC_BLOCKS 0

#define	PRINTF(...)

Functions
long	aes_ccm_decrypt (const unsigned char key, const unsigned char nonce, const unsigned char adata, unsigned long adata_len, const unsigned char ciphermic, signed long ciphermic_len, int mic_len, unsigned char *outbuf)

long	aes_ccm_encrypt (const unsigned char key, const unsigned char nonce, const unsigned char adata, unsigned long adata_len, const unsigned char payload, unsigned long payload_len, int mic_len, unsigned char *outbuf)

void	aes_ccm_memcpy (const unsigned char dest, const unsigned char from, int len)

int	aes_ccm_verify (const unsigned char key, const unsigned char nonce, const unsigned char adata, unsigned long adata_len, const unsigned char ciphermic, unsigned long ciphermic_len, int mic_len)

static void	cbcmac_append (const unsigned char key, unsigned char block)

static int	cbcmac_calc (const unsigned char key, const unsigned char nonce, const unsigned char adata, unsigned long adata_len, const unsigned char payload, unsigned long payload_len, int mic_len, unsigned char *outbuf)

static void	cbcmac_clear (void)

static int	cbcmac_verify (const unsigned char key, const unsigned char nonce, const unsigned char adata, unsigned long adata_len, const unsigned char cipher, unsigned long cipher_len, int mic_len, unsigned char *outbuf)

static int	ctr_mic (const unsigned char key, const unsigned char nonce, const unsigned char cbcmac, int mic_len, unsigned char outbuf)

static void	ctr_next_ctr_block (const unsigned char key, const unsigned char nonce, uint16_t counter, unsigned char *outbuf)

static unsigned long	ctr_payload (const unsigned char key, const unsigned char nonce, const unsigned char payload, unsigned long payload_len, unsigned char outbuf)

Variables
static unsigned char	cbcmac_xor [BLOCK_SIZE]

#define aes_ccm_memcpy memcpy

Referenced by ctr_payload().

#define BLOCK_SIZE 16

Referenced by cbcmac_append(), cbcmac_calc(), cbcmac_verify(), ctr_mic(), ctr_next_ctr_block(), and ctr_payload().

#define CBCMAC_PRINTF ( ... )

Referenced by cbcmac_append(), cbcmac_calc(), and cbcmac_verify().

#define CTR_MIC_PRINTF ( ... )

Referenced by ctr_mic().

#define CTR_PRINTF ( ... )

Referenced by ctr_next_ctr_block(), and ctr_payload().

#define L_SIZELEN 2 /* Size field length: 2 to 8 bytes */

Referenced by cbcmac_calc(), cbcmac_verify(), ctr_mic(), and ctr_next_ctr_block().

#define NONCE_LEN (15-L_SIZELEN) /* Nonce length: fixed to 13 bytes */

Referenced by cbcmac_calc(), cbcmac_verify(), ctr_mic(), and ctr_next_ctr_block().

#define PRINT_CBCMAC_BLOCKS 0

#define PRINT_CTR_BLOCKS 0

#define PRINT_CTR_MIC_BLOCKS 0

#define PRINTF ( ... )

Referenced by aes_ccm_decrypt(), aes_ccm_encrypt(), and aes_ccm_verify().

long aes_ccm_decrypt	(	const unsigned char *	key,
		const unsigned char *	nonce,
		const unsigned char *	adata,
		unsigned long	adata_len,
		const unsigned char *	ciphermic,
		signed long	ciphermic_len,
		int	mic_len,
		unsigned char *	outbuf
	)

References cbcmac_calc(), ctr_mic(), ctr_payload(), i, and PRINTF.

Referenced by netstack_aes_decrypt().

long aes_ccm_encrypt	(	const unsigned char *	key,
		const unsigned char *	nonce,
		const unsigned char *	adata,
		unsigned long	adata_len,
		const unsigned char *	payload,
		unsigned long	payload_len,
		int	mic_len,
		unsigned char *	outbuf
	)

References cbcmac_calc(), ctr_mic(), ctr_payload(), i, and PRINTF.

Referenced by netstack_aes_encrypt().

void aes_ccm_memcpy	(	const unsigned char *	dest,
		const unsigned char *	from,
		int	len
	)

int aes_ccm_verify	(	const unsigned char *	key,
		const unsigned char *	nonce,
		const unsigned char *	adata,
		unsigned long	adata_len,
		const unsigned char *	ciphermic,
		unsigned long	ciphermic_len,
		int	mic_len
	)

References cbcmac_verify(), ctr_mic(), i, and PRINTF.

Referenced by netstack_aes_verify().

static void cbcmac_append	(	const unsigned char *	key,
		unsigned char *	block
	)

static

References aes_encrypt(), BLOCK_SIZE, CBCMAC_PRINTF, cbcmac_xor, and i.

Referenced by cbcmac_calc(), and cbcmac_verify().

static int cbcmac_calc	(	const unsigned char *	key,
		const unsigned char *	nonce,
		const unsigned char *	adata,
		unsigned long	adata_len,
		const unsigned char *	payload,
		unsigned long	payload_len,
		int	mic_len,
		unsigned char *	outbuf
	)

static

References BLOCK_SIZE, BUF, cbcmac_append(), cbcmac_clear(), CBCMAC_PRINTF, L_SIZELEN, len, NONCE_LEN, and UIP_HTONS.

Referenced by aes_ccm_decrypt(), and aes_ccm_encrypt().

static void cbcmac_clear ( void )

static

References cbcmac_xor.

Referenced by cbcmac_calc(), and cbcmac_verify().

static int cbcmac_verify	(	const unsigned char *	key,
		const unsigned char *	nonce,
		const unsigned char *	adata,
		unsigned long	adata_len,
		const unsigned char *	cipher,
		unsigned long	cipher_len,
		int	mic_len,
		unsigned char *	outbuf
	)

static

References BLOCK_SIZE, BUF, cbcmac_append(), cbcmac_clear(), CBCMAC_PRINTF, counter, ctr_next_ctr_block(), i, L_SIZELEN, len, NONCE_LEN, UIP_HTONS, and wdt_reset_count().

Referenced by aes_ccm_verify().

static int ctr_mic	(	const unsigned char *	key,
		const unsigned char *	nonce,
		const unsigned char *	cbcmac,
		int	mic_len,
		unsigned char *	outbuf
	)

static

References aes_encrypt(), BLOCK_SIZE, BUF, CTR_MIC_PRINTF, i, L_SIZELEN, NONCE_LEN, and UIP_HTONS.

Referenced by aes_ccm_decrypt(), aes_ccm_encrypt(), and aes_ccm_verify().

static void ctr_next_ctr_block	(	const unsigned char *	key,
		const unsigned char *	nonce,
		uint16_t	counter,
		unsigned char *	outbuf
	)

static

References aes_encrypt(), BLOCK_SIZE, CTR_PRINTF, i, L_SIZELEN, NONCE_LEN, and UIP_HTONS.

Referenced by cbcmac_verify(), and ctr_payload().

static unsigned long ctr_payload	(	const unsigned char *	key,
		const unsigned char *	nonce,
		const unsigned char *	payload,
		unsigned long	payload_len,
		unsigned char *	outbuf
	)

static

References aes_ccm_memcpy, BLOCK_SIZE, BUF, counter, ctr_next_ctr_block(), CTR_PRINTF, and i.

Referenced by aes_ccm_decrypt(), and aes_ccm_encrypt().

unsigned char cbcmac_xor[BLOCK_SIZE]

static

Referenced by cbcmac_append(), and cbcmac_clear().

Microchip® Advanced Software Framework

Macros

Functions

Variables