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// Copyright (c) 2020-2024, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. 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.
//
// 3. 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.
#pragma once
#include <gcrypt.h>
namespace openpgp
{
class mpi
{
public:
mpi(const mpi &) = delete;
mpi &operator=(const mpi &) = delete;
mpi(mpi &&other)
: data(other.data)
{
other.data = nullptr;
}
template <
typename byte_container,
typename = typename std::enable_if<(sizeof(typename byte_container::value_type) == 1)>::type>
mpi(const byte_container &buffer, gcry_mpi_format format = GCRYMPI_FMT_USG)
: mpi(&buffer[0], buffer.size(), format)
{
}
mpi(const void *buffer, size_t size, gcry_mpi_format format = GCRYMPI_FMT_USG)
{
if (gcry_mpi_scan(&data, format, buffer, size, nullptr) != GPG_ERR_NO_ERROR)
{
throw std::runtime_error("failed to read mpi from buffer");
}
}
~mpi()
{
gcry_mpi_release(data);
}
const gcry_mpi_t &get() const
{
return data;
}
private:
gcry_mpi_t data;
};
} // namespace openpgp
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