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HashSplitTest.sol

pragma solidity 0.4.25;
pragma experimental "ABIEncoderV2";


contract HashTestSplit {
    function calculateFinalHash(uint256 num1, uint256 num2) 
        public
        pure
        returns (bytes32)
      {
          uint256 mult = num1 * num2;
          return keccak256(abi.encodePacked(mult));
      }
    
      function split32Hashto8(bytes32 finalHash) 
        public
        pure
        returns (bytes8 dice1, bytes8 dice2, bytes8 dice3, bytes8 dice4)
      {
        bytes8[4] memory dice = [bytes8(0), 0, 0, 0];
    
        assembly {
          mstore(dice, finalHash)
          mstore(add(dice, 8), finalHash)
          mstore(add(dice, 16), finalHash)
          mstore(add(dice, 24), finalHash)
        }
        dice1 = dice[0];
        dice2 = dice[1];
        dice3 = dice[2];
        dice4 = dice[3];
      }
}