mirror of
https://codeberg.org/anoncontributorxmr/monero.git
synced 2024-11-27 01:42:27 +00:00
86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
// Copyright (c) 2014-2016, 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.
|
|
//
|
|
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
|
|
|
|
#include <cstdint>
|
|
#include <cstdlib>
|
|
#include <cstring>
|
|
#include <limits>
|
|
#include "crypto/hash.h"
|
|
#include "cryptonote_core/difficulty.h"
|
|
|
|
using namespace std;
|
|
using cryptonote::check_hash;
|
|
|
|
int main(int argc, char *argv[]) {
|
|
crypto::hash h;
|
|
for (uint64_t diff = 1;; diff += 1 + (diff >> 8)) {
|
|
for (uint16_t b = 0; b < 256; b++) {
|
|
memset(&h, b, sizeof(crypto::hash));
|
|
if (check_hash(h, diff) != (b == 0 || diff <= 255 / b)) {
|
|
return 1;
|
|
}
|
|
if (b > 0) {
|
|
memset(&h, 0, sizeof(crypto::hash));
|
|
((char *) &h)[31] = b;
|
|
if (check_hash(h, diff) != (diff <= 255 / b)) {
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
if (diff < numeric_limits<uint64_t>::max() / 256) {
|
|
uint64_t val = 0;
|
|
for (int i = 31; i >= 0; i--) {
|
|
val = val * 256 + 255;
|
|
((char *) &h)[i] = static_cast<char>(val / diff);
|
|
val %= diff;
|
|
}
|
|
if (check_hash(h, diff) != true) {
|
|
return 1;
|
|
}
|
|
if (diff > 1) {
|
|
for (int i = 0;; i++) {
|
|
if (i >= 32) {
|
|
abort();
|
|
}
|
|
if (++((char *) &h)[i] != 0) {
|
|
break;
|
|
}
|
|
}
|
|
if (check_hash(h, diff) != false) {
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
if (diff + 1 + (diff >> 8) < diff) {
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|