mirror of
https://github.com/VCMP-SqMod/SqMod.git
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104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
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/*
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Copyright (C) 2018 MariaDB Corporation AB
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not see <http://www.gnu.org/licenses>
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or write to the Free Software Foundation, Inc.,
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51 Franklin St., Fifth Floor, Boston, MA 02110, USA
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*/
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#include <windows.h>
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#include <bcrypt.h>
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#include <ma_crypt.h>
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#include <malloc.h>
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BCRYPT_ALG_HANDLE Sha256Prov= 0;
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BCRYPT_ALG_HANDLE Sha512Prov= 0;
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BCRYPT_ALG_HANDLE RsaProv= 0;
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static LPCWSTR ma_hash_get_algorithm(unsigned int alg, BCRYPT_ALG_HANDLE *algHdl)
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{
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switch(alg)
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{
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case MA_HASH_SHA256:
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*algHdl= Sha256Prov;
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return BCRYPT_SHA256_ALGORITHM;
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case MA_HASH_SHA512:
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*algHdl= Sha512Prov;
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return BCRYPT_SHA512_ALGORITHM;
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default:
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*algHdl= 0;
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return NULL;
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}
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}
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MA_HASH_CTX *ma_hash_new(unsigned int algorithm, MA_HASH_CTX *ctx)
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{
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MA_HASH_CTX *newctx= ctx;
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DWORD cbObjSize, cbData;
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LPCWSTR alg;
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BCRYPT_ALG_HANDLE algHdl= 0;
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alg= ma_hash_get_algorithm(algorithm, &algHdl);
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if (!alg || !algHdl)
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return NULL;
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if (BCryptGetProperty(algHdl, BCRYPT_OBJECT_LENGTH,
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(PBYTE)&cbObjSize, sizeof(DWORD),
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&cbData, 0) < 0)
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goto error;
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if (!newctx)
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{
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newctx= (MA_HASH_CTX *)calloc(1, sizeof(MA_HASH_CTX));
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newctx->free_me= 1;
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}
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else
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memset(newctx, 0, sizeof(MA_HASH_CTX));
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newctx->hashObject= (PBYTE)malloc(cbObjSize);
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newctx->digest_len= (DWORD)ma_hash_digest_size(algorithm);
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BCryptCreateHash(algHdl, &newctx->hHash, newctx->hashObject, cbObjSize, NULL, 0, 0);
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return newctx;
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error:
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if (newctx && !ctx)
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free(newctx);
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return NULL;
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}
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void ma_hash_free(MA_HASH_CTX *ctx)
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{
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if (ctx)
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{
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if (ctx->hHash)
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BCryptDestroyHash(ctx->hHash);
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if (ctx->hashObject)
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free(ctx->hashObject);
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if (ctx->free_me)
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free(ctx);
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}
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}
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void ma_hash_input(MA_HASH_CTX *ctx,
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const unsigned char *buffer,
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size_t len)
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{
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BCryptHashData(ctx->hHash, (PUCHAR)buffer, (LONG)len, 0);
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}
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void ma_hash_result(MA_HASH_CTX *ctx, unsigned char *digest)
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{
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BCryptFinishHash(ctx->hHash, digest, ctx->digest_len, 0);
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}
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