diff --git a/supermicro.php b/supermicro.php
new file mode 100644
index 0000000..aeae8d7
--- /dev/null
+++ b/supermicro.php
@@ -0,0 +1,43 @@
+<?php
+class Supermicro {
+	
+	private function getBin($hexdata)
+	{
+		$bindata = "";
+		for ($i = 0;$i < strlen($hexdata);$i += 2) {
+			$bindata .= chr(hexdec(substr($hexdata, $i, 2)));
+		}
+		return $bindata;
+	}
+	
+	private function getKey($dmac)
+	{
+		return substr(hash_hmac("sha1", $this->getBin($dmac), hex2bin('8544E3B47ECA58F9583043F8')), 0, 24);
+	}
+	
+	public function getLicense($mac, $source = false)
+	{
+		$mac = str_replace(":", "", $mac);
+		if(preg_match("/^[a-z0-9]{12}$/", $mac)) {
+			$key = $this->getKey($mac);
+			if(empty($key)) {
+				return false;
+			}
+			if($source) {
+				return $key;
+			}
+			$s = 0;
+			$result = "";
+			for($i = 0;$i < strlen($key);$i++) {
+				$s++;
+				$result .= $key[$i];
+				if($s == 4 && $i !== strlen($key) - 1) {
+					$result .= "-";
+					$s = 0;
+				}
+			}
+			return $result;
+		}
+		return false;
+	}
+}