X-Git-Url: https://git.mxchange.org/?p=core.git;a=blobdiff_plain;f=contrib%2Fchash%2Fchash.php;h=1bc7f147e5b7c68fb9ac13231c47bd1b9aa47ce1;hp=5bd2893debf4e293d75e02ee62f50b5fc31e7e11;hb=269780b35747a02770a68f9e70171c0f3b4b6a0b;hpb=8cda323d7322dba4365d201f95089e0a4019e71f

diff --git a/contrib/chash/chash.php b/contrib/chash/chash.php
index 5bd2893d..1bc7f147 100644
--- a/contrib/chash/chash.php
+++ b/contrib/chash/chash.php
@@ -1,6 +1,18 @@
 <?php
 error_reporting(E_ALL | E_STRICT);
 
+define('HASH_ALGO', MHASH_RIPEMD320);
+define('BLOCK_SIZE', 100);
+define('NONCE_INCREMENT', 0.0000000000000001);
+define('START_TIME', microtime(TRUE));
+define('CHECK_POINT', 'chash.pos');
+
+// Found hashes
+$foundHashes = array();
+
+// Time when last flush occured
+global $timeFlush;
+
 /**
  * Continued-hashing
  *
@@ -18,7 +30,7 @@ error_reporting(E_ALL | E_STRICT);
  */
 function hashString ($str) {
 	// Calculate strong hash from given string
-	$hash = mhash(MHASH_RIPEMD320, $str);
+	$hash = mhash(HASH_ALGO, $str);
 
 	// Return it hexadecimal-encoded
 	return bin2hex($hash);
@@ -142,6 +154,58 @@ function padHex ($num) {
 	return $hex;
 }
 
+/**
+ * Calculates sum from given hash
+ *
+ * @param	$hash	Hash to calculate sum from
+ * @return	$sum	Sum from given hash
+ */
+function calculateSumFromHash ($hash) {
+	// Everything starts with zero ...
+	$sum = 0;
+
+	// Loop through hash
+	for ($idx = 0; $idx < (strlen($hash) / 2); $idx++) {
+		// And add it
+		$sum = $sum + (hexdec(substr($hash, $idx, 2)) * $idx & 256);
+	} // END - for
+
+	// And return it
+	return $sum;
+}
+
+/**
+ * Calculates new nonce
+ *
+ * @param	$nonce		Old nonce to be used
+ * @return	$newNonce	New nonce
+ */
+function calculateNonce ($nonce) {
+	// Linear incrementation
+	$newNonce = $nonce + NONCE_INCREMENT;
+
+	// Return new value
+	return $newNonce;
+}
+
+/**
+ * Writes/flushes check-point file
+ *
+ * @return	void
+ */
+function flushCheckPointFile ($nonce, $modulaHash, array $foundHashes) {
+	global $timeFlush;
+
+	// Display message
+	print ('FLUSHING: ' . count($foundHashes) . ' total found.' . PHP_EOL);
+
+	// Flush data
+	file_put_contents(CHECK_POINT, base64_encode($nonce) . ':' . $modulaHash . ':' . base64_encode(serialize($foundHashes)));
+
+	// Set time
+	$timeFlush = microtime(TRUE);
+}
+
 /*
  * Calculate "genesis" hashes, please note that these "genesis strings" are now
  * known to the public as you can read them here in source code and therefore I
@@ -185,7 +249,10 @@ $sqrtHashes = array(
 );
 
 // Calulcate modula hash
-$modulaHash = modulaHash($sqrtHashes[0], $sqrtHashes[1]);
+$modulaHash = doubleHashString(modulaHash($sqrtHashes[0], $sqrtHashes[1]));
+
+// This is also the "genesis hash"
+$genesisHash = $modulaHash;
 
 // Output results
 print ('hashes=' . print_r($hashes, TRUE));
@@ -193,5 +260,171 @@ print ('modulaHashes=' . print_r($modulaHashes, TRUE));
 print ('sqrtHashes=' . print_r($sqrtHashes, TRUE));
 print ('modulaHash=' . $modulaHash . PHP_EOL);
 
+// Total reward + hashes
+$totalReward = 0;
+$totalHashes = 0;
+$totalBlocks = 0;
+
+// Is the check point there?
+if (is_readable(CHECK_POINT)) {
+	// Then load it
+	$checkPoint = file_get_contents(CHECK_POINT);
+
+	// Explode it
+	$data = explode(':', $checkPoint);
+
+	// Assert on count
+	assert(count($data) == 3);
+
+	// 1st element is nonce, 2nd hash, 3rd found hashes
+	$nonce       = base64_decode($data[0]);
+	$modulaHash  = $data[1];
+	$foundHashes = unserialize(base64_decode($data[2]));
+} else {
+	// Create nonce (small)
+	$nonce = 1 / mt_rand();
+}
+
+// Output again
+print ('modulaHash=' . $modulaHash . PHP_EOL);
+print ('nonce=' . $nonce . PHP_EOL);
+print ('found=' . count($foundHashes) . PHP_EOL);
+
+// Start "mining"
+while (TRUE) {
+	// Init hash-per-block counter and hashrate
+	$hashesPerBlock = 0;
+	$hashrate = 0;
+
+	// Wait for BLOCK_SIZE iterations (= found hashes). This is one block
+	$timeBlock   = microtime(TRUE);
+	$timeDisplay = $timeBlock;
+	$timeFlush   = $timeBlock;
+
+	// Time waited for a good block again (no iteration)
+	$timeBadHashes = 0;
+
+	while (count($foundHashes) <= BLOCK_SIZE) {
+		// Create hash from modulaHash ("genesis hash") and nonce
+		$nonceHash = doubleHashString($modulaHash . $nonce);
+
+		// Calculate sums
+		$sumNonce  = calculateSumFromHash($nonceHash);
+		$sumModula = calculateSumFromHash($modulaHash);
+
+		// Init counter
+		$iter = 0;
+		$iterSecond = 0;
+
+		// Now start the "mining" ...
+		$timeHash = microtime(TRUE);
+		while ($sumNonce >= $sumModula) {
+			// Calculate new nonce
+			$nonce = calculateNonce($nonce);
+
+			// And hash again
+			$nonceHash = doubleHashString($modulaHash . $nonce);
+
+			// Calculate sums
+			$sumNonce  = calculateSumFromHash($nonceHash);
+
+			// Time spend in loop
+			$testTime = abs(microtime(TRUE) - $timeDisplay);
+
+			// Calculate hashrate/sec
+			$hashrate = 1 / $testTime * $iterSecond * 2;
+
+			// Only every second
+			if ($testTime >= 1) {
+				// Display hash rate
+				print ('hashrate=' . $hashrate . ' hashes/sec,iterSecond=' . $iterSecond . ' iterations/sec' . PHP_EOL);
+
+				// Reset timer
+				$timeDisplay = microtime(TRUE);
+				$iterSecond  = 0;
+			} // END - if
+
+			// Time spend from last flush
+			$testTime = abs(microtime(TRUE) - $timeFlush);
+
+			// Only once per 10 seconds
+			if ($testTime >= 10) {
+				// Flush check-point file
+				flushCheckPointFile($nonce, $modulaHash, $foundHashes);
+			} // END - if
+
+			// Next round
+			$iter++;
+			$iterSecond++;
+			//print ('nonce=' . $nonce . ',iter=' . $iter . PHP_EOL);
+			//print ('nonceHash=' . $nonceHash . PHP_EOL);
+			//print ('sumNonce=' . $sumNonce . PHP_EOL);
+			//print ('sumModula=' . $sumModula . PHP_EOL);
+		} // END - while
+
+		// If the iteration is zero, then no hash is found
+		if ($iter == 0) {
+			// Bad hash found
+			$timeBadHashes += abs(microtime(TRUE) - $timeHash);
+
+			// And next round
+			//print('BAD:nonce=' . $nonce . PHP_EOL);
+
+			// Nothing found, so calculate new nonce
+			$nonce = calculateNonce($nonce);
+			continue;
+		} // END - if
+
+		// Add amount of hashes per block (double-hash)
+		$hashesPerBlock += $iter * 2 + 2;
+
+		// Push found hash
+		array_push($foundHashes, array(
+			'modula_hash'  => $modulaHash,
+			'genesis_hash' => $genesisHash,
+			'nonce'        => $nonce,
+			'iter'         => $iter,
+			'hashes_block' => $hashesPerBlock,
+			'nonce_hash'   => $nonceHash
+		));
+
+		// Found hash:
+		print ('FOUND: nonceHash=' . $nonceHash . ',nonce=' . $nonce . ',iter=' . $iter . PHP_EOL);
+
+		// Flush check-point file after new hash is found
+		flushCheckPointFile($nonce, $nonceHash, $foundHashes);
+
+		// Use nonceHash as next modula hash
+		$modulaHash = $nonceHash;
+	} // END - while
+
+	// Time taken for one block
+	$timeBlock = abs(microtime(TRUE) - $timeBlock);
+
+	// Calculate reward
+	$reward = abs($timeBlock - $timeBadHashes) / $hashrate * $hashesPerBlock / BLOCK_SIZE * 1000;
+	print ('timeBlock=' . $timeBlock . ',timeBadHashes=' . $timeBadHashes . ',hashesPerBlock=' . $hashesPerBlock .',reward=' . $reward . PHP_EOL);
+
+	// Block completed
+	$totalHashes += $hashesPerBlock;
+	$totalBlocks++;
+	$hashesPerBlock = 0;
+	$foundHashes = array();
+
+	// Calculate new nonce
+	$nonce = calculateNonce($nonce);
+
+	// Add reward to total
+	$totalReward += $reward;
+
+	// Calculate average block value
+	$blockValue = $totalReward / $totalBlocks * $totalHashes / (BLOCK_SIZE * $totalBlocks);
+
+	// Calculate reward per hour (= 3600 seconds)
+	$rewardPerHour = $totalReward / abs(microtime(TRUE) - START_TIME) * 3600;
+
+	print ('totalReward=' . $totalReward . ',blockValue=' . $blockValue . ',rewardPerHour=' . $rewardPerHour . PHP_EOL);
+} // END - while
+
 // [EOF]
 ?>