From 91f4c7f45f794fc7bee99356e56853369c98c410 Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Thu, 31 Jan 2019 10:44:08 +0000
Subject: Make difficulty 128 bit instead of 64 bit

Based on Boolberry work by:
  jahrsg <jahr@jahr.me>
  cr.zoidberg <crypto.zoidberg@gmail.com>
---
 src/cryptonote_basic/difficulty.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/cryptonote_basic/difficulty.h')

diff --git a/src/cryptonote_basic/difficulty.h b/src/cryptonote_basic/difficulty.h
index 8da355b22..f7a9376fb 100644
--- a/src/cryptonote_basic/difficulty.h
+++ b/src/cryptonote_basic/difficulty.h
@@ -32,12 +32,13 @@
 
 #include <cstdint>
 #include <vector>
+#include <boost/multiprecision/cpp_int.hpp>
 
 #include "crypto/hash.h"
 
 namespace cryptonote
 {
-    typedef std::uint64_t difficulty_type;
+    typedef boost::multiprecision::uint128_t difficulty_type;
 
     /**
      * @brief checks if a hash fits the given difficulty
@@ -51,6 +52,10 @@ namespace cryptonote
      *
      * @return true if valid, else false
      */
+    bool check_hash_64(const crypto::hash &hash, uint64_t difficulty);
+    uint64_t next_difficulty_64(std::vector<std::uint64_t> timestamps, std::vector<uint64_t> cumulative_difficulties, size_t target_seconds);
+
+    bool check_hash_128(const crypto::hash &hash, difficulty_type difficulty);
     bool check_hash(const crypto::hash &hash, difficulty_type difficulty);
     difficulty_type next_difficulty(std::vector<std::uint64_t> timestamps, std::vector<difficulty_type> cumulative_difficulties, size_t target_seconds);
 }
-- 
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