Merge pull request #3 from androzd/master

DOGE validator

Author: codeator

src/Validation/DOGE.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Merkeleon\PhpCryptocurrencyAddressValidation\Validation;
+
+
+use Merkeleon\PhpCryptocurrencyAddressValidation\Validation;
+
+class DOGE extends Validation
+{
+
+    public function validate($address)
+    {
+        $address = hex2bin(self::base58ToHex($address));
+        if (strlen($address) !== 25)
+        {
+            return false;
+        }
+        $checksum   = substr($address, 21, 4);
+        $rawAddress = substr($address, 0, 21);
+        if (substr(hex2bin(hash('sha256', hex2bin(hash('sha256', $rawAddress)))), 0, 4) === $checksum)
+        {
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+}