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Diffstat (limited to '')
| -rw-r--r-- | libmariadb/include/ma_crypt.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/libmariadb/include/ma_crypt.h b/libmariadb/include/ma_crypt.h new file mode 100644 index 00000000..367488fa --- /dev/null +++ b/libmariadb/include/ma_crypt.h @@ -0,0 +1,155 @@ +/* + Copyright (C) 2018 MariaDB Corporation AB + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not see <http://www.gnu.org/licenses> + or write to the Free Software Foundation, Inc., + 51 Franklin St., Fifth Floor, Boston, MA 02110, USA +*/ + +#ifndef _ma_hash_h_ +#define _ma_hash_h_ + +#include <stddef.h> +#include <stdarg.h> + +/*! Hash algorithms */ +#define MA_HASH_MD5 1 +#define MA_HASH_SHA1 2 +#define MA_HASH_SHA224 3 +#define MA_HASH_SHA256 4 +#define MA_HASH_SHA384 5 +#define MA_HASH_SHA512 6 +#define MA_HASH_RIPEMD160 7 +#define MA_HASH_MAX 8 + +/*! Hash digest sizes */ +#define MA_MD5_HASH_SIZE 16 +#define MA_SHA1_HASH_SIZE 20 +#define MA_SHA224_HASH_SIZE 28 +#define MA_SHA256_HASH_SIZE 32 +#define MA_SHA384_HASH_SIZE 48 +#define MA_SHA512_HASH_SIZE 64 +#define MA_RIPEMD160_HASH_SIZE 20 + +#define MA_MAX_HASH_SIZE 64 +/** \typedef MRL hash context */ + +#if defined(HAVE_WINCRYPT) +typedef void MA_HASH_CTX; +#elif defined(HAVE_OPENSSL) +#include <openssl/evp.h> +typedef EVP_MD_CTX MA_HASH_CTX; +#elif defined(HAVE_GNUTLS) +typedef struct { + void *ctx; + const struct nettle_hash *hash; +} MA_HASH_CTX; +#endif + +/** + @brief acquire and initialize new hash context + + @param[in] algorithm hash algorithm + + @return hash context on success, NULL on error +*/ +MA_HASH_CTX *ma_hash_new(unsigned int algorithm); + +/** + @brief release and deinitializes a hash context + + @param[in] hash context + + @return void +*/ +void ma_hash_free(MA_HASH_CTX *ctx); + +/** + @brief hashes len bytes of data into the hash context. + This function can be called several times on same context to + hash additional data. + + @param[in] ctx hash context + @param[in] buffer data buffer + @param[in] len size of buffer + + @return void +*/ +void ma_hash_input(MA_HASH_CTX *ctx, + const unsigned char *buffer, + size_t len); + +/** + @brief retrieves the hash value from hash context + + @param[in] ctx hash context + @param[out] digest digest containing hash value + + @return void + */ +void ma_hash_result(MA_HASH_CTX *ctx, unsigned char *digest); + + +/** + @brief returns digest size for a given hash algorithm + + @param[in] hash algorithm + + @returns digest size or 0 on error +*/ +static inline size_t ma_hash_digest_size(unsigned int hash_alg) +{ + switch(hash_alg) { + case MA_HASH_MD5: + return MA_MD5_HASH_SIZE; + case MA_HASH_SHA1: + return MA_SHA1_HASH_SIZE; + case MA_HASH_SHA224: + return MA_SHA224_HASH_SIZE; + case MA_HASH_SHA256: + return MA_SHA256_HASH_SIZE; + case MA_HASH_SHA384: + return MA_SHA384_HASH_SIZE; + case MA_HASH_SHA512: + return MA_SHA512_HASH_SIZE; + case MA_HASH_RIPEMD160: + return MA_RIPEMD160_HASH_SIZE; + default: + return 0; + } +} + +/** + @brief function to compute hash from buffer. + + @param[in] hash_alg hash algorithm + @param[in] buffer buffer + @param[in] buffer_leng length of buffer + @param[out] digest computed hash digest + + @return void +*/ +static inline void ma_hash(unsigned int algorithm, + const unsigned char *buffer, + size_t buffer_length, + unsigned char *digest) +{ + MA_HASH_CTX *ctx= NULL; + ctx= ma_hash_new(algorithm); + ma_hash_input(ctx, buffer, buffer_length); + ma_hash_result(ctx, digest); + ma_hash_free(ctx); +} + +#endif /* _ma_hash_h_ */ |