dsa.h

00001 /* dsa.h
00002  *
00003  * Copyright (C) 2006-2016 wolfSSL Inc.
00004  *
00005  * This file is part of wolfSSL.
00006  *
00007  * wolfSSL 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  * wolfSSL 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
00020  */
00021 
00022 
00023 #ifndef WOLF_CRYPT_DSA_H
00024 #define WOLF_CRYPT_DSA_H
00025 
00026 #include <wolfssl/wolfcrypt/types.h>
00027 
00028 #ifndef NO_DSA
00029 
00030 #include <wolfssl/wolfcrypt/integer.h>
00031 #include <wolfssl/wolfcrypt/random.h>
00032 
00033 /* for DSA reverse compatibility */
00034 #define InitDsaKey wc_InitDsaKey
00035 #define FreeDsaKey wc_FreeDsaKey
00036 #define DsaSign wc_DsaSign
00037 #define DsaVerify wc_DsaVerify
00038 #define DsaPublicKeyDecode wc_DsaPublicKeyDecode
00039 #define DsaPrivateKeyDecode wc_DsaPrivateKeyDecode
00040 #define DsaKeyToDer wc_DsaKeyToDer
00041 
00042 #ifdef __cplusplus
00043     extern "C" {
00044 #endif
00045 
00046 
00047 enum {
00048     DSA_PUBLIC   = 0,
00049     DSA_PRIVATE  = 1
00050 };
00051 
00052 /* DSA */
00053 typedef struct DsaKey {
00054     mp_int p, q, g, y, x;
00055     int   type;                               /* public or private */
00056     void* heap;                               /* memory hint */
00057 } DsaKey;
00058 
00059 WOLFSSL_API int wc_InitDsaKey(DsaKey* key);
00060 WOLFSSL_API int wc_InitDsaKey_h(DsaKey* key, void* h);
00061 WOLFSSL_API void wc_FreeDsaKey(DsaKey* key);
00062 WOLFSSL_API int wc_DsaSign(const byte* digest, byte* out,
00063                            DsaKey* key, WC_RNG* rng);
00064 WOLFSSL_API int wc_DsaVerify(const byte* digest, const byte* sig,
00065                              DsaKey* key, int* answer);
00066 WOLFSSL_API int wc_DsaPublicKeyDecode(const byte* input, word32* inOutIdx,
00067                                       DsaKey*, word32);
00068 WOLFSSL_API int wc_DsaPrivateKeyDecode(const byte* input, word32* inOutIdx,
00069                                        DsaKey*, word32);
00070 WOLFSSL_API int wc_DsaKeyToDer(DsaKey* key, byte* output, word32 inLen);
00071 
00072 #ifdef WOLFSSL_KEY_GEN
00073 WOLFSSL_API int wc_MakeDsaKey(WC_RNG *rng, DsaKey *dsa);
00074 WOLFSSL_API int wc_MakeDsaParameters(WC_RNG *rng, int modulus_size, DsaKey *dsa);
00075 #endif
00076 
00077 #ifdef __cplusplus
00078     } /* extern "C" */
00079 #endif
00080 
00081 #endif /* NO_DSA */
00082 #endif /* WOLF_CRYPT_DSA_H */
00083 
00084