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- /* random.h
- *
- * Copyright (C) 2006-2014 wolfSSL Inc.
- *
- * This file is part of CyaSSL.
- *
- * CyaSSL 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.
- *
- * CyaSSL 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 02110-1301, USA
- */
- #ifndef CTAO_CRYPT_RANDOM_H
- #define CTAO_CRYPT_RANDOM_H
- #include <cyassl/ctaocrypt/types.h>
- #if defined(HAVE_HASHDRBG) || defined(NO_RC4)
- #ifdef NO_SHA256
- #error "Hash DRBG requires SHA-256."
- #endif /* NO_SHA256 */
- #include <cyassl/ctaocrypt/sha256.h>
- #else /* HAVE_HASHDRBG || NO_RC4 */
- #include <cyassl/ctaocrypt/arc4.h>
- #endif /* HAVE_HASHDRBG || NO_RC4 */
- #ifdef __cplusplus
- extern "C" {
- #endif
- #if defined(USE_WINDOWS_API)
- #if defined(_WIN64)
- typedef unsigned __int64 ProviderHandle;
- /* type HCRYPTPROV, avoid #include <windows.h> */
- #else
- typedef unsigned long ProviderHandle;
- #endif
- #endif
- /* OS specific seeder */
- typedef struct OS_Seed {
- #if defined(USE_WINDOWS_API)
- ProviderHandle handle;
- #else
- int fd;
- #endif
- } OS_Seed;
- CYASSL_LOCAL
- int GenerateSeed(OS_Seed* os, byte* seed, word32 sz);
- #if defined(CYASSL_MDK_ARM)
- #undef RNG
- #define RNG CyaSSL_RNG /* for avoiding name conflict in "stm32f2xx.h" */
- #endif
- #if defined(HAVE_HASHDRBG) || defined(NO_RC4)
- #define DRBG_SEED_LEN (440/8)
- struct DRBG; /* Private DRBG state */
- /* Hash-based Deterministic Random Bit Generator */
- typedef struct RNG {
- OS_Seed seed;
- struct DRBG* drbg;
- byte status;
- } RNG;
- #else /* HAVE_HASHDRBG || NO_RC4 */
- #define CYASSL_RNG_CAVIUM_MAGIC 0xBEEF0004
- /* secure Random Number Generator */
- typedef struct RNG {
- OS_Seed seed;
- Arc4 cipher;
- #ifdef HAVE_CAVIUM
- int devId; /* nitrox device id */
- word32 magic; /* using cavium magic */
- #endif
- } RNG;
- #ifdef HAVE_CAVIUM
- CYASSL_API int InitRngCavium(RNG*, int);
- #endif
- #endif /* HAVE_HASH_DRBG || NO_RC4 */
- CYASSL_API int InitRng(RNG*);
- CYASSL_API int RNG_GenerateBlock(RNG*, byte*, word32 sz);
- CYASSL_API int RNG_GenerateByte(RNG*, byte*);
- #if defined(HAVE_HASHDRBG) || defined(NO_RC4)
- CYASSL_API int FreeRng(RNG*);
- CYASSL_API int RNG_HealthTest(int reseed,
- const byte* entropyA, word32 entropyASz,
- const byte* entropyB, word32 entropyBSz,
- byte* output, word32 outputSz);
- #endif /* HAVE_HASHDRBG || NO_RC4 */
- #ifdef HAVE_FIPS
- /* fips wrapper calls, user can call direct */
- CYASSL_API int InitRng_fips(RNG* rng);
- CYASSL_API int FreeRng_fips(RNG* rng);
- CYASSL_API int RNG_GenerateBlock_fips(RNG* rng, byte* buf, word32 bufSz);
- CYASSL_API int RNG_HealthTest_fips(int reseed,
- const byte* entropyA, word32 entropyASz,
- const byte* entropyB, word32 entropyBSz,
- byte* output, word32 outputSz);
- #ifndef FIPS_NO_WRAPPERS
- /* if not impl or fips.c impl wrapper force fips calls if fips build */
- #define InitRng InitRng_fips
- #define FreeRng FreeRng_fips
- #define RNG_GenerateBlock RNG_GenerateBlock_fips
- #define RNG_HealthTest RNG_HealthTest_fips
- #endif /* FIPS_NO_WRAPPERS */
- #endif /* HAVE_FIPS */
- #ifdef __cplusplus
- } /* extern "C" */
- #endif
- #endif /* CTAO_CRYPT_RANDOM_H */
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