dh.h

00001 /* dh.h
00002  *
00003  * Copyright (C) 2006-2012 Sawtooth Consulting Ltd.
00004  *
00005  * This file is part of CyaSSL.
00006  *
00007  * CyaSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * CyaSSL is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
00020  */
00021 
00022 
00023 #ifndef NO_DH
00024 
00025 #ifndef CTAO_CRYPT_DH_H
00026 #define CTAO_CRYPT_DH_H
00027 
00028 #include <cyassl/ctaocrypt/types.h>
00029 #include <cyassl/ctaocrypt/integer.h>
00030 #include <cyassl/ctaocrypt/random.h>
00031 
00032 #ifdef __cplusplus
00033     extern "C" {
00034 #endif
00035 
00036 
00037 /* Diffie-Hellman Key */
00038 typedef struct DhKey {
00039     mp_int p, g;                            /* group parameters  */
00040 } DhKey;
00041 
00042 
00043 CYASSL_API void InitDhKey(DhKey* key);
00044 CYASSL_API void FreeDhKey(DhKey* key);
00045 
00046 CYASSL_API int DhGenerateKeyPair(DhKey* key, RNG* rng, byte* priv,
00047                                  word32* privSz, byte* pub, word32* pubSz);
00048 CYASSL_API int DhAgree(DhKey* key, byte* agree, word32* agreeSz,
00049                        const byte* priv, word32 privSz, const byte* otherPub,
00050                        word32 pubSz);
00051 
00052 CYASSL_API int DhKeyDecode(const byte* input, word32* inOutIdx, DhKey* key,
00053                            word32);
00054 CYASSL_API int DhSetKey(DhKey* key, const byte* p, word32 pSz, const byte* g,
00055                         word32 gSz);
00056 CYASSL_API int DhParamsLoad(const byte* input, word32 inSz, byte* p,
00057                             word32* pInOutSz, byte* g, word32* gInOutSz);
00058 
00059 
00060 #ifdef __cplusplus
00061     } /* extern "C" */
00062 #endif
00063 
00064 #endif /* CTAO_CRYPT_DH_H */
00065 
00066 #endif /* NO_DH */
00067