SSL/TLS Library
CyaSSL is SSL/TLS library for embedded systems.
Diff: cyassl/ctaocrypt/random.h
- Revision:
- 0:9d17e4342598
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cyassl/ctaocrypt/random.h Sun Apr 20 12:40:57 2014 +0000 @@ -0,0 +1,119 @@ +/* random.h + * + * Copyright (C) 2006-2013 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + + +#ifndef CTAO_CRYPT_RANDOM_H +#define CTAO_CRYPT_RANDOM_H + +#include <cyassl/ctaocrypt/types.h> + +#ifndef NO_RC4 + #include <cyassl/ctaocrypt/arc4.h> +#else + #include <cyassl/ctaocrypt/sha256.h> +#endif + +#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 + +#ifndef NO_RC4 + +#define CYASSL_RNG_CAVIUM_MAGIC 0xBEEF0004 + +/* secure Random Nnumber 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 + +#else /* NO_RC4 */ + +#define DBRG_SEED_LEN (440/8) + + +/* secure Random Nnumber Generator */ +typedef struct RNG { + OS_Seed seed; + + Sha256 sha; + byte digest[SHA256_DIGEST_SIZE]; + byte V[DBRG_SEED_LEN]; + byte C[DBRG_SEED_LEN]; + word64 reseed_ctr; +} RNG; + +#endif + +CYASSL_API int InitRng(RNG*); +CYASSL_API void RNG_GenerateBlock(RNG*, byte*, word32 sz); +CYASSL_API byte RNG_GenerateByte(RNG*); + +#ifdef NO_RC4 + CYASSL_API void FreeRng(RNG*); +#endif + +#ifdef __cplusplus + } /* extern "C" */ +#endif + +#endif /* CTAO_CRYPT_RANDOM_H */ +