ethash.hpp

/*
  This file is part of ethash.
 
  ethash is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
 
  ethash is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with ethash.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#pragma once
 
#include <cstdint>
#include <string>
#include <veriblock/pop/uint.hpp>
 
#define VBK_ETHASH_REVISION 23
#define VBK_ETHASH_DATASET_BYTES_INIT 1073741824U  // 2**30
#define VBK_ETHASH_DATASET_BYTES_GROWTH 8388608U   // 2**23
#define VBK_ETHASH_CACHE_BYTES_INIT 1073741824U    // 2**24
#define VBK_ETHASH_CACHE_BYTES_GROWTH 131072U      // 2**17
#define VBK_ETHASH_MIX_BYTES 128
#define VBK_ETHASH_HASH_BYTES 64
#define VBK_ETHASH_DATASET_PARENTS 256
#define VBK_ETHASH_CACHE_ROUNDS 3
#define VBK_ETHASH_ACCESSES 64
#define VBK_ETHASH_DAG_NODE_SIZE (VBK_ETHASH_HASH_BYTES / 4)
 
namespace altintegration {
namespace progpow {
 
struct ethash_cache {
  void* cache;
  uint64_t cache_size;
  uint64_t epoch;
};
 
typedef struct ethash_dag_node {
  uint32_t words[VBK_ETHASH_DAG_NODE_SIZE];
} ethash_dag_node_t;
 
void ethash_calculate_dag_node(ethash_dag_node_t* out,
                               uint32_t node_index,
                               ethash_cache* const light);
 
ethash_cache* ethash_light_new(uint64_t block_number);
void ethash_light_delete(ethash_cache* light);
 
uint256 ethash_calculate_seedhash(uint64_t block_number);
 
uint256 ethash_get_seedhash(uint64_t block_number);
 
std::shared_ptr<ethash_cache> ethash_make_cache(uint64_t block_number);
 
}  // namespace progpow
}  // namespace altintegration