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/*
ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file hal_cry_lld.h
* @brief PLATFORM cryptographic subsystem low level driver header.
*
* @addtogroup CRYPTO
* @{
*/
#ifndef HAL_CRYPTO_LLD_H
#define HAL_CRYPTO_LLD_H
#if (HAL_USE_CRY == TRUE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/**
* @name Driver capability switches
* @{
*/
#define CRY_LLD_SUPPORTS_AES TRUE
#define CRY_LLD_SUPPORTS_AES_ECB TRUE
#define CRY_LLD_SUPPORTS_AES_CBC TRUE
#define CRY_LLD_SUPPORTS_AES_CFB TRUE
#define CRY_LLD_SUPPORTS_AES_CTR TRUE
#define CRY_LLD_SUPPORTS_AES_GCM FALSE
#define CRY_LLD_SUPPORTS_DES TRUE
#define CRY_LLD_SUPPORTS_DES_ECB TRUE
#define CRY_LLD_SUPPORTS_DES_CBC TRUE
#define CRY_LLD_SUPPORTS_SHA1 TRUE
#define CRY_LLD_SUPPORTS_SHA256 TRUE
#define CRY_LLD_SUPPORTS_SHA512 TRUE
#define CRY_LLD_SUPPORTS_TRNG TRUE
/** @{ */
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name PLATFORM configuration options
* @{
*/
/**
* @brief CRY1 driver enable switch.
* @details If set to @p TRUE the support for CRY1 is included.
* @note The default is @p FALSE.
*/
#if !defined(PLATFORM_CRY_USE_CRY1) || defined(__DOXYGEN__)
#define PLATFORM_CRY_USE_CRY1 FALSE
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
typedef struct
{
uint32_t encrypt;
uint32_t block_size;
uint32_t mode;
const uint8_t *iv;
}aesparams;
typedef enum {
TRANSFER_DMA = 0,
TRANSFER_POLLING,
}crytransfermode_t;
typedef enum {
AES_CFBS_128 = 0,
AES_CFBS_64,
AES_CFBS_32,
AES_CFBS_16,
AES_CFBS_8
}aesciphersize_t;
typedef enum {
CRY_SHA_1,
CRY_SHA_224,
CRY_SHA_256,
CRY_SHA_384,
CRY_SHA_512
}shadalgo_t;
typedef struct
{
shadalgo_t algo;
}shaparams_t;
/**
* @brief CRY key identifier type.
*/
typedef uint32_t crykey_t;
/**
* @brief Type of a structure representing an CRY driver.
*/
typedef struct CRYDriver CRYDriver;
/**
* @brief Driver configuration structure.
* @note It could be empty on some architectures.
*/
typedef enum {
TDES_ALGO_SINGLE = 0,
TDES_ALGO_TRIPLE,
TDES_ALGO_XTEA
}tdes_algo_t;
typedef struct {
crytransfermode_t transfer_mode;
uint32_t cfbs;
tdes_algo_t tdes_algo;
} CRYConfig;
#define KEY0_BUFFER_SIZE_W HAL_CRY_MAX_KEY_SIZE/4
#define SHA_MAX_PADDING_LEN (2 * 128)
#define SHA_UPDATE_LEN (128 * 1024)
#define CRY_DRIVER_EXT_FIELDS thread_reference_t thread; \
sama_dma_channel_t *dmarx; \
sama_dma_channel_t *dmatx; \
uint32_t rxdmamode; \
uint32_t txdmamode; \
uint8_t dmawith; \
uint8_t dmachunksize; \
uint8_t enabledPer; \
mutex_t mutex; \
uint32_t key0_buffer[KEY0_BUFFER_SIZE_W]; \
uint8_t sha_buffer[SHA_MAX_PADDING_LEN];
/**
* @brief Structure representing an CRY driver.
*/
struct CRYDriver {
/**
* @brief Driver state.
*/
crystate_t state;
/**
* @brief Current configuration data.
*/
const CRYConfig *config;
/**
* @brief Algorithm type of transient key.
*/
cryalgorithm_t key0_type;
/**
* @brief Size of transient key.
*/
size_t key0_size;
#if (HAL_CRY_USE_FALLBACK == TRUE) || defined(__DOXYGEN__)
/**
* @brief Key buffer for the fall-back implementation.
*/
uint8_t key0_buffer[HAL_CRY_MAX_KEY_SIZE];
#endif
#if defined(CRY_DRIVER_EXT_FIELDS)
CRY_DRIVER_EXT_FIELDS
#endif
/* End of the mandatory fields.*/
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if (PLATFORM_CRY_USE_CRY1 == TRUE) && !defined(__DOXYGEN__)
extern CRYDriver CRYD1;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void cry_lld_init(void);
void cry_lld_start(CRYDriver *cryp);
void cry_lld_stop(CRYDriver *cryp);
cryerror_t cry_lld_loadkey(CRYDriver *cryp,
cryalgorithm_t algorithm,
size_t size,
const uint8_t *keyp);
cryerror_t cry_lld_encrypt_AES(CRYDriver *cryp,
crykey_t key_id,
const uint8_t *in,
uint8_t *out);
cryerror_t cry_lld_decrypt_AES(CRYDriver *cryp,
crykey_t key_id,
const uint8_t *in,
uint8_t *out);
cryerror_t cry_lld_encrypt_AES_ECB(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out);
cryerror_t cry_lld_decrypt_AES_ECB(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out);
cryerror_t cry_lld_encrypt_AES_CBC(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv);
cryerror_t cry_lld_decrypt_AES_CBC(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv);
cryerror_t cry_lld_encrypt_AES_CFB(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv);
cryerror_t cry_lld_decrypt_AES_CFB(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv);
cryerror_t cry_lld_encrypt_AES_CTR(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv);
cryerror_t cry_lld_decrypt_AES_CTR(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv);
cryerror_t cry_lld_encrypt_AES_GCM(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv,
size_t aadsize,
const uint8_t *aad,
uint8_t *authtag);
cryerror_t cry_lld_decrypt_AES_GCM(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv,
size_t aadsize,
const uint8_t *aad,
uint8_t *authtag);
cryerror_t cry_lld_encrypt_DES(CRYDriver *cryp,
crykey_t key_id,
const uint8_t *in,
uint8_t *out);
cryerror_t cry_lld_decrypt_DES(CRYDriver *cryp,
crykey_t key_id,
const uint8_t *in,
uint8_t *out);
cryerror_t cry_lld_encrypt_DES_ECB(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out);
cryerror_t cry_lld_decrypt_DES_ECB(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out);
cryerror_t cry_lld_encrypt_DES_CBC(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv);
cryerror_t cry_lld_decrypt_DES_CBC(CRYDriver *cryp,
crykey_t key_id,
size_t size,
const uint8_t *in,
uint8_t *out,
const uint8_t *iv);
cryerror_t cry_lld_SHA1(CRYDriver *cryp, size_t size,
const uint8_t *in, uint8_t *out);
cryerror_t cry_lld_SHA256(CRYDriver *cryp, size_t size,
const uint8_t *in, uint8_t *out);
cryerror_t cry_lld_SHA512(CRYDriver *cryp, size_t size,
const uint8_t *in, uint8_t *out);
cryerror_t cry_lld_TRNG(CRYDriver *cryp, uint8_t *out);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_CRY == TRUE */
#endif /* HAL_CRYPTO_LLD_H */
/** @} */
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