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115 lines
3.8 KiB
115 lines
3.8 KiB
// Copyright (c) 2014-2018, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#include <unistd.h>
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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#include <cstdlib>
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#include <cstring>
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#include <memory>
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#include <boost/thread/mutex.hpp>
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#include <boost/thread/lock_guard.hpp>
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#include <boost/shared_ptr.hpp>
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//#include "common/varint.h"
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#include "warnings.h"
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#include "crypto.h"
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#include "hash.h"
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namespace crypto {
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using std::abort;
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using std::int32_t;
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using std::int64_t;
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using std::size_t;
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using std::uint32_t;
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using std::uint64_t;
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extern "C" {
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#include "crypto-ops.h"
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//#include "random.h"
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}
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boost::mutex random_lock;
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static inline unsigned char *operator &(ec_point &point) {
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return &reinterpret_cast<unsigned char &>(point);
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}
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static inline const unsigned char *operator &(const ec_point &point) {
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return &reinterpret_cast<const unsigned char &>(point);
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}
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static inline unsigned char *operator &(ec_scalar &scalar) {
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return &reinterpret_cast<unsigned char &>(scalar);
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}
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static inline const unsigned char *operator &(const ec_scalar &scalar) {
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return &reinterpret_cast<const unsigned char &>(scalar);
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}
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/* generate a random 32-byte (256-bit) integer and copy it to res */
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// static inline void random_scalar_not_thread_safe(ec_scalar &res) {
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// unsigned char tmp[64];
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// generate_random_bytes_not_thread_safe(64, tmp);
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// sc_reduce(tmp);
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// memcpy(&res, tmp, 32);
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// }
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// static inline void random_scalar(ec_scalar &res) {
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// boost::lock_guard<boost::mutex> lock(random_lock);
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// random_scalar_not_thread_safe(res);
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// }
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// void hash_to_scalar(const void *data, size_t length, ec_scalar &res) {
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// cn_fast_hash(data, length, reinterpret_cast<hash &>(res));
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// sc_reduce32(&res);
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// }
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bool crypto_ops::check_key(const public_key &key) {
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ge_p3 point;
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return ge_frombytes_vartime(&point, &key) == 0;
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}
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// static void hash_to_ec(const public_key &key, ge_p3 &res) {
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// hash h;
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// ge_p2 point;
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// ge_p1p1 point2;
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// cn_fast_hash(std::addressof(key), sizeof(public_key), h);
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// ge_fromfe_frombytes_vartime(&point, reinterpret_cast<const unsigned char *>(&h));
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// ge_mul8(&point2, &point);
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// ge_p1p1_to_p3(&res, &point2);
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// }
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}
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