/**
* Static method to return the decoded GET paramters from an encrytpted tk value as an array of key/value pairs.
*
* @return array
*
* @since 1.0
*/
public static function getDecodeQueryParams($tk)
{
$config = ConfigProvider::getInstance();
// replace any troublesome characters from the URL with the original values
$token = strtr($tk, '-_', '+/');
$token = base64_decode($token);
$params = SecurityUtils::decrypt($token);
$pairs = explode('&', $params);
$parameters = array();
foreach ($pairs as $pair) {
$split = explode('=', $pair);
$parameters[$split[0]] = $split[1];
}
return $parameters;
}
/**
* Testing encrypt/decrypt methods.
*
* @since 2.0.2
*/
public function testEncryptDecrypt()
{
$plain = "test string";
$encrypted = SecurityUtils::encrypt($plain);
$this->assertEquals($plain, SecurityUtils::decrypt($encrypted), "Testing encrypt/decrypt methods");
}
/**
* Descrypts the HTTP param fieldnames in the array provided and returns the plain version.
*
* @param $params array
*
* @return array
*
* @since 1.2.2
*/
private function decryptFieldNames($params)
{
$decrypted = array();
foreach (array_keys($params) as $fieldname) {
// set request params where fieldnames provided are based64 encoded and encrypted
if (Validator::isBase64($fieldname)) {
$decrypted[SecurityUtils::decrypt(base64_decode($fieldname))] = $params[$fieldname];
}
}
return $decrypted;
}
