adds block.difficulty to the hash

juntn96 · Nov 14, 2017 · bc857ea · bc857ea
1 parent bbf746e
commit bc857ea
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/contracts/Random.sol b/contracts/Random.sol
@@ -13,7 +13,12 @@ contract Random {
   }
 
   function maxRandom() public returns (uint256 randomNumber) {
-    _seed = uint256(keccak256(_seed, block.blockhash(block.number - 1), block.coinbase));
+    _seed = uint256(keccak256(
+        _seed,
+        block.blockhash(block.number - 1),
+        block.coinbase,
+        block.difficulty
+    ));
     return _seed;
   }