zoneminder/src/zm_crypto_gnutls.h

76 lines
2.0 KiB
C++

/*
* This file is part of the ZoneMinder Project. See AUTHORS file for Copyright information
*
* This program 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.
*
* This program 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef ZONEMINDER_SRC_ZM_CRYPTO_GNUTLS_H_
#define ZONEMINDER_SRC_ZM_CRYPTO_GNUTLS_H_
#ifdef HAVE_LIBGNUTLS
#include "zm_crypto_generics.h"
#include "zm_utils.h"
#include <gnutls/crypto.h>
namespace zm {
namespace crypto {
namespace impl {
namespace gnutls {
template<HashAlgorithms Algorithm>
struct HashAlgorithmMapper;
template<>
struct HashAlgorithmMapper<HashAlgorithms::kMD5> {
static constexpr gnutls_digest_algorithm_t algorithm = GNUTLS_DIG_MD5;
};
template<>
struct HashAlgorithmMapper<HashAlgorithms::kSHA1> {
static constexpr gnutls_digest_algorithm_t algorithm = GNUTLS_DIG_SHA1;
};
template<HashAlgorithms Algorithm>
class GenericHashImpl : public GenericHash<GenericHashImpl<Algorithm>, Algorithm> {
public:
GenericHashImpl() {
int32 ret = gnutls_hash_init(&handle_, HashAlgorithmMapper<Algorithm>::algorithm);
ASSERT(ret == 0);
};
void DoUpdateData(const uint8 *data, size_t length) {
int32 res = gnutls_hash(handle_, data, length);
ASSERT(res == 0);
}
void DoFinalize() {
gnutls_hash_deinit(handle_, digest_.data());
}
private:
gnutls_hash_hd_t handle_ = {};
using Base = GenericHash<GenericHashImpl<Algorithm>, Algorithm>;
using Base::digest_;
};
}
}
}
}
#endif // HAVE_LIBGNUTLS
#endif // ZONEMINDER_SRC_ZM_CRYPTO_GNUTLS_H_