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Key.cpp
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Key.cpp
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/**
* Copyright (c) 2017, Tresorit Kft.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "Key.hpp"
#include <limits>
#include <openssl/evp.h>
#include "OpenSSLException.hpp"
Key::Key(const uint8_t* key, size_t keyLen)
: pkey(nullptr)
{
OPENSSL_THROW_IF(keyLen > std::numeric_limits<int>::max());
OPENSSL_THROW_IF_NULL(
this->pkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, nullptr, key, static_cast<int>(keyLen)));
}
Key::Key(Key&& other)
: pkey(other.pkey)
{
other.pkey = nullptr;
}
Key& Key::operator=(Key&& other)
{
if (this != &other) {
if (this->pkey != nullptr) {
EVP_PKEY_free(this->pkey);
}
this->pkey = other.pkey;
other.pkey = nullptr;
}
return *this;
}
Key::~Key()
{
if (this->pkey != nullptr) {
EVP_PKEY_free(this->pkey);
}
}
EVP_PKEY* Key::get()
{
return this->pkey;
}