JWT::encodeDER

static function encodeDER($type, $value)
{
	$tag_header = 0;
	if ($type === self::ASN1_SEQUENCE) {
		$tag_header |= 0x20;
	}

	// Type
	$der = chr($tag_header | $type);

	// Length
	$der .= chr(strlen($value));

	return $der . $value;
}