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- /* dsa.h
- *
- * Copyright (C) 2006-2022 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 2 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/dsa.h
- */
- #ifndef WOLF_CRYPT_DSA_H
- #define WOLF_CRYPT_DSA_H
- #include <wolfssl/wolfcrypt/types.h>
- #ifndef NO_DSA
- #include <wolfssl/wolfcrypt/integer.h>
- #include <wolfssl/wolfcrypt/random.h>
- /* for DSA reverse compatibility */
- #define InitDsaKey wc_InitDsaKey
- #define FreeDsaKey wc_FreeDsaKey
- #define DsaSign wc_DsaSign
- #define DsaVerify wc_DsaVerify
- #define DsaPublicKeyDecode wc_DsaPublicKeyDecode
- #define DsaPrivateKeyDecode wc_DsaPrivateKeyDecode
- #define DsaKeyToDer wc_DsaKeyToDer
- #ifdef __cplusplus
- extern "C" {
- #endif
- enum {
- DSA_PUBLIC = 0,
- DSA_PRIVATE = 1
- };
- enum {
- /* 160 bit q length */
- DSA_160_HALF_SIZE = 20, /* r and s size */
- DSA_160_SIG_SIZE = 40, /* signature size */
- DSA_HALF_SIZE = DSA_160_HALF_SIZE, /* kept for compatiblity */
- DSA_SIG_SIZE = DSA_160_SIG_SIZE, /* kept for compatiblity */
- /* 256 bit q length */
- DSA_256_HALF_SIZE = 32, /* r and s size */
- DSA_256_SIG_SIZE = 64, /* signature size */
- DSA_MIN_HALF_SIZE = DSA_160_HALF_SIZE,
- DSA_MIN_SIG_SIZE = DSA_160_SIG_SIZE,
- DSA_MAX_HALF_SIZE = DSA_256_HALF_SIZE,
- DSA_MAX_SIG_SIZE = DSA_256_SIG_SIZE,
- };
- /* DSA */
- typedef struct DsaKey {
- mp_int p, q, g, y, x;
- int type; /* public or private */
- void* heap; /* memory hint */
- } DsaKey;
- WOLFSSL_API int wc_InitDsaKey(DsaKey* key);
- WOLFSSL_API int wc_InitDsaKey_h(DsaKey* key, void* h);
- WOLFSSL_API void wc_FreeDsaKey(DsaKey* key);
- WOLFSSL_API int wc_DsaSign(const byte* digest, byte* out,
- DsaKey* key, WC_RNG* rng);
- WOLFSSL_API int wc_DsaVerify(const byte* digest, const byte* sig,
- DsaKey* key, int* answer);
- WOLFSSL_API int wc_DsaPublicKeyDecode(const byte* input, word32* inOutIdx,
- DsaKey* key, word32 inSz);
- WOLFSSL_API int wc_DsaPrivateKeyDecode(const byte* input, word32* inOutIdx,
- DsaKey* key, word32 inSz);
- WOLFSSL_API int wc_DsaKeyToDer(DsaKey* key, byte* output, word32 inLen);
- WOLFSSL_API int wc_SetDsaPublicKey(byte* output, DsaKey* key,
- int outLen, int with_header);
- WOLFSSL_API int wc_DsaKeyToPublicDer(DsaKey* key, byte* output, word32 inLen);
- #ifdef WOLFSSL_KEY_GEN
- WOLFSSL_API int wc_MakeDsaKey(WC_RNG *rng, DsaKey *dsa);
- WOLFSSL_API int wc_MakeDsaParameters(WC_RNG *rng, int modulus_size, DsaKey *dsa);
- #endif
- /* raw export functions */
- WOLFSSL_API int wc_DsaImportParamsRaw(DsaKey* dsa, const char* p,
- const char* q, const char* g);
- WOLFSSL_API int wc_DsaImportParamsRawCheck(DsaKey* dsa, const char* p,
- const char* q, const char* g,
- int trusted, WC_RNG* rng);
- WOLFSSL_API int wc_DsaExportParamsRaw(DsaKey* dsa, byte* p, word32* pSz,
- byte* q, word32* qSz, byte* g,
- word32* gSz);
- WOLFSSL_API int wc_DsaExportKeyRaw(DsaKey* dsa, byte* x, word32* xSz, byte* y,
- word32* ySz);
- #ifdef __cplusplus
- } /* extern "C" */
- #endif
- #endif /* NO_DSA */
- #endif /* WOLF_CRYPT_DSA_H */
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