mirror of https://github.com/wolfSSL/wolfssl.git
112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
/* random.h
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*
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* Copyright (C) 2006-2013 wolfSSL Inc.
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*
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* This file is part of CyaSSL.
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*
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* CyaSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* CyaSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifndef CTAO_CRYPT_RANDOM_H
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#define CTAO_CRYPT_RANDOM_H
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#include <cyassl/ctaocrypt/types.h>
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#ifndef NO_RC4
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#include <cyassl/ctaocrypt/arc4.h>
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#else
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#include <cyassl/ctaocrypt/sha256.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(USE_WINDOWS_API)
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#if defined(_WIN64)
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typedef unsigned __int64 ProviderHandle;
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/* type HCRYPTPROV, avoid #include <windows.h> */
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#else
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typedef unsigned long ProviderHandle;
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#endif
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#endif
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/* OS specific seeder */
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typedef struct OS_Seed {
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#if defined(USE_WINDOWS_API)
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ProviderHandle handle;
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#else
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int fd;
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#endif
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} OS_Seed;
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CYASSL_LOCAL
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int GenerateSeed(OS_Seed* os, byte* seed, word32 sz);
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#ifndef NO_RC4
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#define CYASSL_RNG_CAVIUM_MAGIC 0xBEEF0004
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/* secure Random Nnumber Generator */
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typedef struct RNG {
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OS_Seed seed;
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Arc4 cipher;
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#ifdef HAVE_CAVIUM
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int devId; /* nitrox device id */
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word32 magic; /* using cavium magic */
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#endif
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} RNG;
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#ifdef HAVE_CAVIUM
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CYASSL_API int InitRngCavium(RNG*, int);
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#endif
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#else /* NO_RC4 */
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#define DBRG_SEED_LEN (440/8)
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/* secure Random Nnumber Generator */
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typedef struct RNG {
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OS_Seed seed;
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Sha256 sha;
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byte digest[SHA256_DIGEST_SIZE];
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byte V[DBRG_SEED_LEN];
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byte C[DBRG_SEED_LEN];
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word64 reseed_ctr;
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} RNG;
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#endif
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CYASSL_API int InitRng(RNG*);
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CYASSL_API void RNG_GenerateBlock(RNG*, byte*, word32 sz);
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CYASSL_API byte RNG_GenerateByte(RNG*);
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#ifdef NO_RC4
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CYASSL_API void FreeRng(RNG*);
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#endif
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* CTAO_CRYPT_RANDOM_H */
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