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dh.h
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210 lines (187 loc) · 7.07 KB
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/* dh.h
*
* Copyright (C) 2006-2025 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL 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 3 of the License, or
* (at your option) any later version.
*
* wolfSSL 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
/*!
\file wolfssl/wolfcrypt/dh.h
*/
#ifndef WOLF_CRYPT_DH_H
#define WOLF_CRYPT_DH_H
#include <wolfssl/wolfcrypt/types.h>
#ifndef NO_DH
#if FIPS_VERSION3_GE(2,0,0)
#include <wolfssl/wolfcrypt/fips.h>
#endif /* HAVE_FIPS_VERSION >= 2 */
#include <wolfssl/wolfcrypt/wolfmath.h>
#include <wolfssl/wolfcrypt/random.h>
#ifdef WOLFSSL_KCAPI_DH
#include <wolfssl/wolfcrypt/port/kcapi/kcapi_dh.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifdef WOLFSSL_ASYNC_CRYPT
#include <wolfssl/wolfcrypt/async.h>
#endif
typedef struct DhParams {
#ifdef HAVE_FFDHE_Q
const byte* q;
word32 q_len;
#endif /* HAVE_FFDHE_Q */
const byte* p;
word32 p_len;
const byte* g;
word32 g_len;
} DhParams;
/* Diffie-Hellman Key */
struct DhKey {
mp_int p, g, q; /* group parameters */
#ifdef WOLFSSL_DH_EXTRA
mp_int pub;
mp_int priv;
#endif
void* heap;
#ifdef WOLFSSL_ASYNC_CRYPT
WC_ASYNC_DEV asyncDev;
#endif
int trustedGroup;
#ifdef WOLFSSL_KCAPI_DH
struct kcapi_handle* handle;
#endif
};
#ifndef WC_DH_TYPE_DEFINED
typedef struct DhKey DhKey;
#define WC_DH_TYPE_DEFINED
#endif
enum {
WC_FFDHE_2048 = 256,
WC_FFDHE_3072 = 257,
WC_FFDHE_4096 = 258,
WC_FFDHE_6144 = 259,
WC_FFDHE_8192 = 260
};
/* DH Private Key size up to 8192 bit */
#ifndef WC_DH_PRIV_MAX_SZ
#define WC_DH_PRIV_MAX_SZ 52
#endif
#ifndef DH_MAX_SIZE
#ifdef USE_FAST_MATH
/* FP implementation support numbers up to FP_MAX_BITS / 2 bits. */
#define DH_MAX_SIZE (FP_MAX_BITS / 2)
#if defined(WOLFSSL_MYSQL_COMPATIBLE) && DH_MAX_SIZE < 8192
#error "MySQL needs FP_MAX_BITS at least at 16384"
#endif
#elif defined(WOLFSSL_SP_MATH_ALL) || defined(WOLFSSL_SP_MATH)
/* SP implementation supports numbers of SP_INT_BITS bits. */
#define DH_MAX_SIZE (((SP_INT_BITS + 7) / 8) * 8)
#if defined(WOLFSSL_MYSQL_COMPATIBLE) && DH_MAX_SIZE < 8192
#error "MySQL needs SP_INT_BITS at least at 8192"
#endif
#else
#ifdef WOLFSSL_MYSQL_COMPATIBLE
/* Integer maths is dynamic but we only go up to 8192 bits. */
#define DH_MAX_SIZE 8192
#else
/* Integer maths is dynamic but we only go up to 4096 bits. */
#define DH_MAX_SIZE 4096
#endif
#endif
#endif
#if FIPS_VERSION3_GE(6,0,0)
extern const unsigned int wolfCrypt_FIPS_dh_ro_sanity[2];
WOLFSSL_LOCAL int wolfCrypt_FIPS_DH_sanity(void);
#endif
#ifdef HAVE_PUBLIC_FFDHE
#ifdef HAVE_FFDHE_2048
WOLFSSL_API const DhParams* wc_Dh_ffdhe2048_Get(void);
#endif
#ifdef HAVE_FFDHE_3072
WOLFSSL_API const DhParams* wc_Dh_ffdhe3072_Get(void);
#endif
#ifdef HAVE_FFDHE_4096
WOLFSSL_API const DhParams* wc_Dh_ffdhe4096_Get(void);
#endif
#ifdef HAVE_FFDHE_6144
WOLFSSL_API const DhParams* wc_Dh_ffdhe6144_Get(void);
#endif
#ifdef HAVE_FFDHE_8192
WOLFSSL_API const DhParams* wc_Dh_ffdhe8192_Get(void);
#endif
#endif
WOLFSSL_API int wc_InitDhKey(DhKey* key);
WOLFSSL_API int wc_InitDhKey_ex(DhKey* key, void* heap, int devId);
WOLFSSL_API int wc_FreeDhKey(DhKey* key);
WOLFSSL_API int wc_DhGenerateKeyPair(DhKey* key, WC_RNG* rng, byte* priv,
word32* privSz, byte* pub, word32* pubSz);
WOLFSSL_API int wc_DhAgree(DhKey* key, byte* agree, word32* agreeSz,
const byte* priv, word32 privSz, const byte* otherPub,
word32 pubSz);
WOLFSSL_API int wc_DhAgree_ct(DhKey* key, byte* agree, word32* agreeSz,
const byte* priv, word32 privSz, const byte* otherPub,
word32 pubSz);
WOLFSSL_API int wc_DhKeyDecode(const byte* input, word32* inOutIdx, DhKey* key,
word32 inSz); /* wc_DhKeyDecode is in asn.c */
WOLFSSL_API int wc_DhSetKey(DhKey* key, const byte* p, word32 pSz, const byte* g,
word32 gSz);
WOLFSSL_API int wc_DhSetKey_ex(DhKey* key, const byte* p, word32 pSz,
const byte* g, word32 gSz, const byte* q, word32 qSz);
WOLFSSL_API int wc_DhSetNamedKey(DhKey* key, int name);
WOLFSSL_API int wc_DhGetNamedKeyParamSize(int name,
word32* p, word32* g, word32* q);
WOLFSSL_API word32 wc_DhGetNamedKeyMinSize(int name);
WOLFSSL_API int wc_DhCmpNamedKey(int name, int noQ,
const byte* p, word32 pSz,
const byte* g, word32 gSz,
const byte* q, word32 qSz);
WOLFSSL_API int wc_DhCopyNamedKey(int name,
byte* p, word32* pSz, byte* g, word32* gSz, byte* q, word32* qSz);
WOLFSSL_API int wc_DhGeneratePublic(DhKey* key, byte* priv,
word32 privSz, byte* pub, word32* pubSz);
#ifdef WOLFSSL_DH_EXTRA
WOLFSSL_API int wc_DhImportKeyPair(DhKey* key, const byte* priv, word32 privSz,
const byte* pub, word32 pubSz);
WOLFSSL_API int wc_DhExportKeyPair(DhKey* key, byte* priv, word32* pPrivSz,
byte* pub, word32* pPubSz);
WOLFSSL_LOCAL int wc_DhKeyCopy(DhKey* src, DhKey* dst);
#endif
WOLFSSL_API int wc_DhSetCheckKey(DhKey* key, const byte* p, word32 pSz,
const byte* g, word32 gSz, const byte* q, word32 qSz,
int trusted, WC_RNG* rng);
WOLFSSL_API int wc_DhParamsLoad(const byte* input, word32 inSz, byte* p,
word32* pInOutSz, byte* g, word32* gInOutSz);
WOLFSSL_API int wc_DhCheckPubKey(DhKey* key, const byte* pub, word32 pubSz);
WOLFSSL_API int wc_DhCheckPubKey_ex(DhKey* key, const byte* pub, word32 pubSz,
const byte* prime, word32 primeSz);
WOLFSSL_API int wc_DhCheckPubValue(const byte* prime, word32 primeSz,
const byte* pub, word32 pubSz);
WOLFSSL_API int wc_DhCheckPrivKey(DhKey* key, const byte* priv, word32 privSz);
WOLFSSL_API int wc_DhCheckPrivKey_ex(DhKey* key, const byte* priv,
word32 privSz, const byte* prime, word32 primeSz);
WOLFSSL_API int wc_DhCheckKeyPair(DhKey* key, const byte* pub, word32 pubSz,
const byte* priv, word32 privSz);
#ifdef WOLFSSL_KEY_GEN
WOLFSSL_API int wc_DhGenerateParams(WC_RNG *rng, int modSz, DhKey *dh);
#endif
WOLFSSL_API int wc_DhExportParamsRaw(DhKey* dh, byte* p, word32* pSz,
byte* q, word32* qSz, byte* g, word32* gSz);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* NO_DH */
#endif /* WOLF_CRYPT_DH_H */