cmac.cpp File Reference

#include <stdint.h>
#include "aes.h"
#include "cmac.h"
#include "system/utilities.h"

Macros
#define	LSHIFT(v, r)
#define	XOR(v, r)
#define	MIN(a, b)   ((a) < (b) ? (a) : (b))

Functions
void	AES_CMAC_Init (AES_CMAC_CTX *ctx)
void	AES_CMAC_SetKey (AES_CMAC_CTX *ctx, const uint8_t key[AES_CMAC_KEY_LENGTH])
void	AES_CMAC_Update (AES_CMAC_CTX *ctx, const uint8_t *data, uint32_t len)
void	AES_CMAC_Final (uint8_t digest[AES_CMAC_DIGEST_LENGTH], AES_CMAC_CTX *ctx)

Macro Definition Documentation

LSHIFT

#define LSHIFT	(		v,
			r
	)

Value:

    do                                              \
    {                                               \
        int32_t i;                                  \
        for (i = 0; i < 15; i++)                    \
            (r)[i] = (v)[i] << 1 | (v)[i + 1] >> 7; \
        (r)[15] = (v)[15] << 1;                     \
    } while (0)

XOR

#define XOR	(		v,
			r
	)

Value:

    do                                \
    {                                 \
        int32_t i;                    \
        for (i = 0; i < 16; i++)      \
        {                             \
            (r)[i] = (r)[i] ^ (v)[i]; \
        }                             \
    } while (0)

MIN

#define MIN	(		a,
			b
	)		((a) < (b) ? (a) : (b))

Function Documentation

AES_CMAC_Init()

void AES_CMAC_Init

(

AES_CMAC_CTX *

ctx

)

AES_CMAC_SetKey()

void AES_CMAC_SetKey	(	AES_CMAC_CTX *	ctx,
		const uint8_t	key[AES_CMAC_KEY_LENGTH]
	)

AES_CMAC_Update()

void AES_CMAC_Update	(	AES_CMAC_CTX *	ctx,
		const uint8_t *	data,
		uint32_t	len
	)

AES_CMAC_Final()

void AES_CMAC_Final	(	uint8_t	digest[AES_CMAC_DIGEST_LENGTH],
		AES_CMAC_CTX *	ctx
	)