extend/alipay/pay/lotusphp_runtime/Cookie/Cookie.php

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<?php
class LtCookie
{
	public $configHandle;
	private $secretKey;

	public function __construct()
	{
		if (! $this->configHandle instanceof LtConfig)
		{
			if (class_exists("LtObjectUtil", false))
			{
				$this->configHandle = LtObjectUtil::singleton("LtConfig");
			}
			else
			{
				$this->configHandle = new LtConfig;
			}
		}
	}

	public function init()
	{ 
		$this->secretKey = $this->configHandle->get("cookie.secret_key");
		if(empty($this->secretKey))
		{
			trigger_error("cookie.secret_key empty");
		}
	}

	/**
	 * Decrypt the encrypted cookie
	 * 
	 * @param string $encryptedText 
	 * @return string 
	 */
	protected function decrypt($encryptedText)
	{
		$key = $this->secretKey;
		$cryptText = base64_decode($encryptedText);
		$ivSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
		$iv = mcrypt_create_iv($ivSize, MCRYPT_RAND);
		$decryptText = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $cryptText, MCRYPT_MODE_ECB, $iv);
		return trim($decryptText);
	}

	/**
	 * Encrypt the cookie
	 * 
	 * @param string $plainText 
	 * @return string 
	 */
	protected function encrypt($plainText)
	{
		$key = $this->secretKey;
		$ivSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
		$iv = mcrypt_create_iv($ivSize, MCRYPT_RAND);
		$encryptText = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $plainText, MCRYPT_MODE_ECB, $iv);
		return trim(base64_encode($encryptText));
	}