/* 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 #if defined(HAVE_HASHDRBG) || defined(NO_RC4) #ifdef NO_SHA256 #error "Hash DRBG requires SHA-256." #endif /* NO_SHA256 */ #include #else /* HAVE_HASHDRBG || NO_RC4 */ #include #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 */ #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 */