添加了MCrypt加密助手

application/module/Helpers/MCrypt.php

@@ -0,0 +1,46 @@
+<?php
+namespace Helpers;
+
+class MCrypt
+{	
+	function __construct()
+	{
+		$this->config = \Zend_Registry::get('config');
+	}
+	
+	static function encrypt($decrypted, $password, $salt='!kQm*fF3pXe1Kbm%9') {
+		
+		$key = hash('SHA256', $salt . $password, true);
+		
+		srand();
+		
+		$iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC), MCRYPT_RAND);
+		
+		if (strlen($iv_base64 = rtrim(base64_encode($iv), '=')) != 22) return false;
+
+		$encrypted = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $decrypted . md5($decrypted), MCRYPT_MODE_CBC, $iv));
+
+		return $iv_base64 . $encrypted;
+	}
+	
+	static function decrypt($encrypted, $password, $salt='!kQm*fF3pXe1Kbm%9') {
+		
+		$key = hash('SHA256', $salt . $password, true);
+		
+		$iv = base64_decode(substr($encrypted, 0, 22) . '==');
+		
+		$encrypted = substr($encrypted, 22);
+
+		$decrypted = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($encrypted), MCRYPT_MODE_CBC, $iv), "\0\4");
+	
+		$hash = substr($decrypted, -32);
+
+		$decrypted = substr($decrypted, 0, -32);
+
+		if (md5($decrypted) != $hash) return false;
+
+		return $decrypted;
+	}
+	
+	
+}