/**
* 对消息进行加密
* 微信提供
* @param string $text 需要加密的消息
* @param string $appid
* @param string $encodingAesKey
* @return string 加密后的消息字符串
*/
public static function encrypt($text, $appid, $encodingAesKey)
{
$encrypted = '';
$key = self::key($encodingAesKey);
try {
$random = StrStatic::randomString('alnum', 16);
$text = $random . pack("N", strlen($text)) . $text . $appid;
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
$module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
$iv = substr($key, 0, 16);
$text = self::PKCS7Encoder_encode($text);
mcrypt_generic_init($module, $key, $iv);
$encrypted = mcrypt_generic($module, $text);
mcrypt_generic_deinit($module);
mcrypt_module_close($module);
} catch (\Exception $e) {
die($text);
}
return base64_encode($encrypted);
}
protected function set_sha1_sign($encrypt, &$timestamp, &$nonce)
{
$timestamp = time();
$nonce = StrStatic::randomString('numeric');
return $this->sha1_sign($encrypt, $timestamp, $nonce);
}