aes_alt.h

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#ifndef MBEDTLS_AES_ALT_H
#define MBEDTLS_AES_ALT_H

#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

/***************************************************************************/
/***************************************************************************/
#if defined( MBEDTLS_SLCL_PLUGINS )
#include "aesdrv.h"
#include "sl_crypto.h"
#endif

#include <stddef.h>
#include <stdint.h>

#define MBEDTLS_AES_ENCRYPT     1
#define MBEDTLS_AES_DECRYPT     0

/* Silicon Labs specific error codes: */
#define MBEDTLS_ERR_AES_NOT_SUPPORTED         ((int)MBEDTLS_ECODE_AESDRV_NOT_SUPPORTED)
#define MBEDTLS_ERR_AES_AUTHENTICATION_FAILED ((int)MBEDTLS_ECODE_AESDRV_AUTHENTICATION_FAILED)
#define MBEDTLS_ERR_AES_OUT_OF_RESOURCES      ((int)MBEDTLS_ECODE_AESDRV_OUT_OF_RESOURCES)
#define MBEDTLS_ERR_AES_INVALID_PARAM         ((int)MBEDTLS_ECODE_AESDRV_INVALID_PARAM)

#if defined(MBEDTLS_AES_ALT)
/* SiliconLabs CRYPTO hardware acceleration implementation */

#ifdef __cplusplus
extern "C" {
#endif

typedef struct
{
#if defined( MBEDTLS_SLCL_PLUGINS )
    AESDRV_Context_t                aesdrv_ctx;       
    mbedtls_device_io_mode          io_mode;          
    mbedtls_device_io_mode_specific io_mode_specific; 
#endif
    unsigned int                    keybits;   
    uint32_t                        key[8];    
}
mbedtls_aes_context;

void mbedtls_aes_init( mbedtls_aes_context *ctx );

void mbedtls_aes_free( mbedtls_aes_context *ctx );

#if defined( MBEDTLS_SLCL_PLUGINS )

int mbedtls_aes_set_device_instance(mbedtls_aes_context *ctx,
                                    unsigned int         devno);

int mbedtls_aes_set_device_lock_wait_ticks(mbedtls_aes_context *ctx,
                                           int                  ticks);

int mbedtls_aes_set_device_io_mode( mbedtls_aes_context             *ctx,
                                    mbedtls_device_io_mode          mode,
                                    mbedtls_device_io_mode_specific *specific );
                                    
#endif
  
int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key,
                    unsigned int keybits );

int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key,
                    unsigned int keybits );

int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx,
                    int mode,
                    const unsigned char input[16],
                    unsigned char output[16] );

#if defined(MBEDTLS_CIPHER_MODE_CBC)

int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
                    int mode,
                    size_t length,
                    unsigned char iv[16],
                    const unsigned char *input,
                    unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CBC */

#if defined(MBEDTLS_CIPHER_MODE_CFB)

int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx,
                       int mode,
                       size_t length,
                       size_t *iv_off,
                       unsigned char iv[16],
                       const unsigned char *input,
                       unsigned char *output );

int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx,
                    int mode,
                    size_t length,
                    unsigned char iv[16],
                    const unsigned char *input,
                    unsigned char *output );
#endif /*MBEDTLS_CIPHER_MODE_CFB */

#if defined(MBEDTLS_CIPHER_MODE_CTR)

int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx,
                       size_t length,
                       size_t *nc_off,
                       unsigned char nonce_counter[16],
                       unsigned char stream_block[16],
                       const unsigned char *input,
                       unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CTR */

#ifdef __cplusplus
}
#endif

#endif /* MBEDTLS_AES_ALT */

#ifdef __cplusplus
extern "C" {
#endif

int mbedtls_aes_self_test( int verbose );

#ifdef __cplusplus
}
#endif

#endif /* MBEDTLS_AES_ALT_H */