#include "config.h"
#include "config.h"
#include MBEDTLS_CONFIG_FILE
#include MBEDTLS_CONFIG_FILE
#include "cipher.h"
#include "cipher.h"
#include "cmac_alt.h"
#include "cmac_alt.h"
#define MBEDTLS_CMAC_H
#define MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED -7A /**< CMAC hardware accelerator failed. */
/* MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_AES_BLOCK_SIZE 16
#define MBEDTLS_DES3_BLOCK_SIZE 8
#define MBEDTLS_CIPHER_BLKSIZE_MAX 16 /**< The longest block used by CMAC is that of AES. */
#define MBEDTLS_CIPHER_BLKSIZE_MAX 8 /**< The longest block used by CMAC is that of 3DES. */
int mbedtls_cipher_cmac_starts( mbedtls_cipher_context_t *ctx,
const unsigned char *key, size_t keybits );
/** * \brief This function sets the CMAC key, and prepares to authenticate * the input data. * Must be called with an initialized cipher context. * * \param ctx The cipher context used for the CMAC operation, initialized * as one of the following types: MBEDTLS_CIPHER_AES_128_ECB, * MBEDTLS_CIPHER_AES_192_ECB, MBEDTLS_CIPHER_AES_256_ECB, * or MBEDTLS_CIPHER_DES_EDE3_ECB. * \param key The CMAC key. * \param keybits The length of the CMAC key in bits. * Must be supported by the cipher. * * \return \c 0 on success. * \return A cipher-specific error code on failure. */
int mbedtls_cipher_cmac_update( mbedtls_cipher_context_t *ctx,
const unsigned char *input, size_t ilen );
/** * \brief This function feeds an input buffer into an ongoing CMAC * computation. * * It is called between mbedtls_cipher_cmac_starts() or * mbedtls_cipher_cmac_reset(), and mbedtls_cipher_cmac_finish(). * Can be called repeatedly. * * \param ctx The cipher context used for the CMAC operation. * \param input The buffer holding the input data. * \param ilen The length of the input data. * * \return \c 0 on success. * \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA * if parameter verification fails. */
int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
unsigned char *output );
/** * \brief This function finishes the CMAC operation, and writes * the result to the output buffer. * * It is called after mbedtls_cipher_cmac_update(). * It can be followed by mbedtls_cipher_cmac_reset() and * mbedtls_cipher_cmac_update(), or mbedtls_cipher_free(). * * \param ctx The cipher context used for the CMAC operation. * \param output The output buffer for the CMAC checksum result. * * \return \c 0 on success. * \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA * if parameter verification fails. */
int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx );
/** * \brief This function prepares the authentication of another * message with the same key as the previous CMAC * operation. * * It is called after mbedtls_cipher_cmac_finish() * and before mbedtls_cipher_cmac_update(). * * \param ctx The cipher context used for the CMAC operation. * * \return \c 0 on success. * \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA * if parameter verification fails. */
int mbedtls_cipher_cmac( const mbedtls_cipher_info_t *cipher_info,
const unsigned char *key, size_t keylen,
const unsigned char *input, size_t ilen,
unsigned char *output );
/** * \brief This function calculates the full generic CMAC * on the input buffer with the provided key. * * The function allocates the context, performs the * calculation, and frees the context. * * The CMAC result is calculated as * output = generic CMAC(cmac key, input buffer). * * * \param cipher_info The cipher information. * \param key The CMAC key. * \param keylen The length of the CMAC key in bits. * \param input The buffer holding the input data. * \param ilen The length of the input data. * \param output The buffer for the generic CMAC result. * * \return \c 0 on success. * \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA * if parameter verification fails. */
int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_len,
const unsigned char *input, size_t in_len,
unsigned char output[16] );
/** * \brief This function implements the AES-CMAC-PRF-128 pseudorandom * function, as defined in * RFC-4615: The Advanced Encryption Standard-Cipher-based * Message Authentication Code-Pseudo-Random Function-128 * (AES-CMAC-PRF-128) Algorithm for the Internet Key * Exchange Protocol (IKE). * * \param key The key to use. * \param key_len The key length in Bytes. * \param input The buffer holding the input data. * \param in_len The length of the input data in Bytes. * \param output The buffer holding the generated 16 Bytes of * pseudorandom output. * * \return \c 0 on success. */
int mbedtls_cmac_self_test( int verbose );
/** * \brief The CMAC checkup routine. * * \return \c 0 on success. * \return \c 1 on failure. */