diff options
Diffstat (limited to 'wolfssl/wolfcrypt/port/st/stm32.h')
| -rw-r--r-- | wolfssl/wolfcrypt/port/st/stm32.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/wolfssl/wolfcrypt/port/st/stm32.h b/wolfssl/wolfcrypt/port/st/stm32.h new file mode 100644 index 0000000..4b461a1 --- /dev/null +++ b/wolfssl/wolfcrypt/port/st/stm32.h @@ -0,0 +1,142 @@ +/* stm32.h + * + * Copyright (C) 2006-2020 wolfSSL Inc. + * + * This file is part of wolfSSL. + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA + */ + +#ifndef _WOLFPORT_STM32_H_ +#define _WOLFPORT_STM32_H_ + +/* Generic STM32 Hashing and Crypto Functions */ +/* Supports CubeMX HAL or Standard Peripheral Library */ + +#include <wolfssl/wolfcrypt/settings.h> +#include <wolfssl/wolfcrypt/types.h> + +#if defined(WOLFSSL_STM32_PKA) && defined(HAVE_ECC) + #include <wolfssl/wolfcrypt/integer.h> + #include <wolfssl/wolfcrypt/ecc.h> +#endif + +#ifdef STM32_HASH + +#define WOLFSSL_NO_HASH_RAW + +#ifdef HASH_DIGEST + /* The HASH_DIGEST register indicates SHA224/SHA256 support */ + #define STM32_HASH_SHA2 + #define HASH_CR_SIZE 54 + #define HASH_MAX_DIGEST 32 +#else + #define HASH_CR_SIZE 50 + #define HASH_MAX_DIGEST 20 +#endif + +/* Handle hash differences between CubeMX and StdPeriLib */ +#if !defined(HASH_ALGOMODE_HASH) && defined(HASH_AlgoMode_HASH) + #define HASH_ALGOMODE_HASH HASH_AlgoMode_HASH +#endif +#if !defined(HASH_DATATYPE_8B) && defined(HASH_DataType_8b) + #define HASH_DATATYPE_8B HASH_DataType_8b +#endif + +#ifndef STM32_HASH_TIMEOUT + #define STM32_HASH_TIMEOUT 0xFFFF +#endif + + +/* STM32 register size in bytes */ +#define STM32_HASH_REG_SIZE 4 + +/* STM32 Hash Context */ +typedef struct { + /* Context switching registers */ + uint32_t HASH_IMR; + uint32_t HASH_STR; + uint32_t HASH_CR; + uint32_t HASH_CSR[HASH_CR_SIZE]; + + /* Hash state / buffers */ + word32 buffer[STM32_HASH_REG_SIZE / sizeof(word32)]; /* partial word buffer */ + word32 buffLen; /* partial word remain */ + word32 loLen; /* total update bytes + (only lsb 6-bits is used for nbr valid bytes in last word) */ +} STM32_HASH_Context; + + +/* API's */ +void wc_Stm32_Hash_Init(STM32_HASH_Context* stmCtx); +int wc_Stm32_Hash_Update(STM32_HASH_Context* stmCtx, word32 algo, + const byte* data, int len); +int wc_Stm32_Hash_Final(STM32_HASH_Context* stmCtx, word32 algo, + byte* hash, int digestSize); + +#endif /* STM32_HASH */ + + +#ifdef STM32_CRYPTO + +#ifndef NO_AES + #if !defined(STM32_CRYPTO_AES_GCM) && (defined(WOLFSSL_STM32F4) || \ + defined(WOLFSSL_STM32F7) || defined(WOLFSSL_STM32L4)) + /* Hardware supports AES GCM acceleration */ + #define STM32_CRYPTO_AES_GCM + #endif + + #ifdef WOLFSSL_STM32L4 + #define STM32_CRYPTO_AES_ONLY /* crypto engine only supports AES */ + #define CRYP AES + #endif + + /* Detect newer CubeMX crypto HAL (HAL_CRYP_Encrypt / HAL_CRYP_Decrypt) */ + #if !defined(STM32_HAL_V2) && \ + defined(WOLFSSL_STM32F7) && defined(CRYP_AES_GCM) + #define STM32_HAL_V2 + #endif + + /* The datatype for STM32 CubeMX HAL Crypt calls */ + #ifdef STM32_HAL_V2 + #define STM_CRYPT_TYPE uint32_t + #else + #define STM_CRYPT_TYPE uint8_t + #endif + + /* CRYPT_AES_GCM starts the IV with 2 */ + #define STM32_GCM_IV_START 2 + + struct Aes; + #ifdef WOLFSSL_STM32_CUBEMX + int wc_Stm32_Aes_Init(struct Aes* aes, CRYP_HandleTypeDef* hcryp); + #else /* STD_PERI_LIB */ + int wc_Stm32_Aes_Init(struct Aes* aes, CRYP_InitTypeDef* cryptInit, + CRYP_KeyInitTypeDef* keyInit); + #endif /* WOLFSSL_STM32_CUBEMX */ +#endif /* !NO_AES */ + +#endif /* STM32_CRYPTO */ + +#if defined(WOLFSSL_STM32_PKA) && defined(HAVE_ECC) +int stm32_ecc_verify_hash_ex(mp_int *r, mp_int *s, const byte* hash, + word32 hashlen, int* res, ecc_key* key); + +int stm32_ecc_sign_hash_ex(const byte* hash, word32 hashlen, WC_RNG* rng, + ecc_key* key, mp_int *r, mp_int *s); +#endif + + +#endif /* _WOLFPORT_STM32_H_ */ |