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<?php //Case Battle Fairness | Round Validation $serverSeed = '0fbcbf286e15c3916e56c75c37c48370e66e390ff315d7922ac2f396c0b3b47a'; // Server seed $eosBlockSeed = '16203c4944240111289076b00dfa748f7056c67776262835e7ccc265535498f9'; // EOS Block Seed /* * This is the round number, where 1 round is one case opened. If the battle has 10 cases, * this means there are 10 rounds - 1-10. * IMPORTANT: If it's the tiebreaker round, it will always be totalRounds + 1 * because the tiebreaker is considered as one additional round. If you have 2 cases * which results in 2 rounds, the tiebreaker roundNumber is 3 because it's total (2) + 1. */ $roundNumber = 2; /* * Player position that we want to validate the roll for. * For example, if you want to validate your own roll and you were holding * the 3rd position from left to right, then playerPosition will be 3. */ $playerPosition = 3; // The Player Position (1 to 4) // Update this to true if you are validating a tiebreaker result. $isTiebreaker = false; /* * Case Ticket's Quantity, by default it's 100,000 * We only change this if there's a case that has different ticket distribution. * Right now, all cases use 100,000 by default. * IMPORTANT: If it's the tiebreaker round, this will be number of players participating on the tiebreaker. * For example, if two players are participating on a tiebreaker the ticketQuantity is 2. */ $ticketQuantity = 100000; /* ------------------ */ if ($serverSeed == '' || $eosBlockSeed == '' || $roundNumber < 0 || $playerPosition < 1 || $playerPosition > 4 || $ticketQuantity <= 0) { echo "Fill in details"; return; } define('MAX_HEX_SEGMENTS', 6); define('HEX_SEGMENT_SIZE', 2); define('BASE_FOR_HEX_CONVERSION', 256); define('HASH_TYPE', 'sha256'); function calculateDecimalValue(string $preResult): float { $decimalValue = 0; for ($i = 0; $i < MAX_HEX_SEGMENTS; $i++) { $hexValue = substr($preResult, HEX_SEGMENT_SIZE * $i, HEX_SEGMENT_SIZE); $decimalValue += hexdec($hexValue) / pow(BASE_FOR_HEX_CONVERSION, $i + 1); } return $decimalValue; } function getProvablyFairResult(string $init, string $serverSeed, int $qty): array { $preResult = hash_hmac(HASH_TYPE, $init, $serverSeed); $decimalValue = calculateDecimalValue($preResult); $result = (int) ($decimalValue * $qty) + 1; return [ 'preResult' => $preResult, 'result' => $result, ]; } $serverSeed = preg_replace("/\r|\n/", "", $serverSeed); $eosBlockSeed = preg_replace("/\r|\n/", "", $eosBlockSeed); if ($isTiebreaker) { $stringToHash = "$eosBlockSeed-$roundNumber"; } else { $stringToHash = "$eosBlockSeed-$roundNumber-$playerPosition"; } $result = getProvablyFairResult($stringToHash, $serverSeed, $ticketQuantity); echo "Result: {$result['result']}"; ?>
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Result: 37821

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50.93 ms | 402 KiB | 62 Q