/**
* @param array $parameters
*
* @return string
*/
public function generate(array $parameters)
{
$shainString = '';
// All parameters need to be arranged alphabetically.
ksort($parameters);
foreach ($parameters as $key => $value) {
// Parameters that do not have a value should NOT be included in the string to hash
if (empty($value)) {
continue;
}
// All parameter names should be in UPPERCASE (to avoid any case confusion).
$key = strtoupper($key);
if (in_array($key, static::$allowed, true) || $this->isWildcarded($key)) {
$shainString .= sprintf('%s=%s%s', $key, $value, $this->token->getShain());
}
}
return strtoupper(sha1($shainString));
}
