static void Reg(string oid, string name)
{
if (!OIDToName.ContainsKey(oid))
{
OIDToName.Add(oid, name);
}
string nn = Normalize(name);
if (NameToOID.ContainsKey(nn))
{
throw new Exception("OID name collision: " + nn);
}
NameToOID.Add(nn, oid);
/* Many names start with 'id-??-' and we want to support the short names (without that
* prefix) as aliases. But we must take care of some collisions on short names. */
if (name.StartsWith("id-") && name.Length >= 7 && name[5] == '-')
{
if (name.StartsWith("id-ad-"))
{
Reg(oid, name.Substring(6) + "-IA");
}
else if (name.StartsWith("id-kp-"))
{
Reg(oid, name.Substring(6) + "-EKU");
}
else
{
Reg(oid, name.Substring(6));
}
}
}
public static string ToOID(string name)
{
if (IsNumericOID(name))
{
return(name);
}
string nn = Normalize(name);
if (!NameToOID.ContainsKey(nn))
{
throw new AsnException("unrecognized OID name: " + name);
}
return(NameToOID[nn]);
}