length++
		}
	}

	for i := length - 1; i >= 0; i-- {
		o := byte(n >> uint(i*7))
		o &= 0x7f
		if i != 0 {
			o |= 0x80
		}

		b.add(o)
	}
}

func isValidOID(oid encoding_asn1.ObjectIdentifier) bool {
	if len(oid) < 2 {
		return false
	}

	if oid[0] > 2 || (oid[0] <= 1 && oid[1] >= 40) {
		return false
	}

	for _, v := range oid {
		if v < 0 {