dsa.h

00001 /* dsa.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_DSA
00024 
00025 #ifndef CTAO_CRYPT_DSA_H
00026 #define CTAO_CRYPT_DSA_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 enum {
00038     DSA_PUBLIC   = 0,
00039     DSA_PRIVATE  = 1
00040 };
00041 
00042 /* DSA */
00043 typedef struct DsaKey {
00044     mp_int p, q, g, y, x;
00045     int type;                               /* public or private */
00046 } DsaKey;
00047 
00048 
00049 CYASSL_API void InitDsaKey(DsaKey* key);
00050 CYASSL_API void FreeDsaKey(DsaKey* key);
00051 
00052 CYASSL_API int DsaSign(const byte* digest, byte* out, DsaKey* key, RNG* rng);
00053 CYASSL_API int DsaVerify(const byte* digest, const byte* sig, DsaKey* key,
00054                          int* answer);
00055 
00056 CYASSL_API int DsaPublicKeyDecode(const byte* input, word32* inOutIdx, DsaKey*,
00057                                   word32);
00058 CYASSL_API int DsaPrivateKeyDecode(const byte* input, word32* inOutIdx, DsaKey*,
00059                                    word32);
00060 
00061 #ifdef __cplusplus
00062     } /* extern "C" */
00063 #endif
00064 
00065 #endif /* CTAO_CRYPT_DSA_H */
00066 #endif /* NO_DSA */
00067