mirror of
https://github.com/monero-project/monero-gui.git
synced 2025-01-25 12:05:54 +00:00
107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
// Copyright (c) 2020, 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 <vector>
|
|
|
|
#include <gcrypt.h>
|
|
#include <span.h>
|
|
|
|
namespace openpgp
|
|
{
|
|
|
|
class hash
|
|
{
|
|
public:
|
|
enum algorithm : uint8_t
|
|
{
|
|
sha256 = 8,
|
|
};
|
|
|
|
hash(const hash &) = delete;
|
|
hash &operator=(const hash &) = delete;
|
|
|
|
hash(uint8_t algorithm)
|
|
: algo(algorithm)
|
|
, consumed(0)
|
|
{
|
|
if (gcry_md_open(&md, algo, 0) != GPG_ERR_NO_ERROR)
|
|
{
|
|
throw std::runtime_error("failed to create message digest object");
|
|
}
|
|
}
|
|
|
|
~hash()
|
|
{
|
|
gcry_md_close(md);
|
|
}
|
|
|
|
hash &operator<<(uint8_t byte)
|
|
{
|
|
gcry_md_putc(md, byte);
|
|
++consumed;
|
|
return *this;
|
|
}
|
|
|
|
hash &operator<<(const epee::span<const uint8_t> &bytes)
|
|
{
|
|
gcry_md_write(md, &bytes[0], bytes.size());
|
|
consumed += bytes.size();
|
|
return *this;
|
|
}
|
|
|
|
hash &operator<<(const std::vector<uint8_t> &bytes)
|
|
{
|
|
return *this << epee::to_span(bytes);
|
|
}
|
|
|
|
std::vector<uint8_t> finish() const
|
|
{
|
|
std::vector<uint8_t> result(gcry_md_get_algo_dlen(algo));
|
|
const void *digest = gcry_md_read(md, algo);
|
|
if (digest == nullptr)
|
|
{
|
|
throw std::runtime_error("failed to read the digest");
|
|
}
|
|
memcpy(&result[0], digest, result.size());
|
|
return result;
|
|
}
|
|
|
|
size_t consumed_bytes() const
|
|
{
|
|
return consumed;
|
|
}
|
|
|
|
private:
|
|
const uint8_t algo;
|
|
gcry_md_hd_t md;
|
|
size_t consumed;
|
|
};
|
|
|
|
}
|