First, a failure to communicate doesn't have to mean that either of us is dumb. It just happens sometimes. Second, the thought that you might be trolling has crossed my mind as well, so it now seems unlikely that either of us are. Third, there really isn't any need to repeatedly resort to insults. I have no idea what you do for a living but I wouldn't be so ready to dismiss you as incompetent as you seem to be with others.

Let me try to clarify some of the things, because I often forget to add details that others might find important.

Security by obscurity is generally used to describe very bad attempts to secure something by hiding either the item intended to be secured, or something else that is used to secure it.

To clarify, a password CAN potentially be secured so inadequately that it represents an example of security by obscurity. For example, if a person tapes a copy of his password to the bottom of his keyboard.

Unfortunately, many of the best security mechanisms we currently have still use passwords, or RSA tokens, or something else that we have in our possession. In some cases, we don't yet have (or haven't popularized) anything better, so rather than lump some really useful, yet imperfect technologies in the same category as the jackass that tapes his password to his keyboard as "security through obscurity." We eliminate passwords/tokens that have been properly secured from the conversation.

To clarify even more, if a SWAT-team storms a secure facility, murders the guards, and spends several hours cutting open a hardened safe that contains cryptographic keying material, most security experts aren't going to look at the situation and say "Well, what else do you expect when you rely on security through obscurity? I knew someone would find that password." The situations aren't comparable.

So when I say that passwords aren't included in security through obscurity, what I mean is that the entire concept of having a password should not be considered an example of security through obscurity, because the phrase is generally reserved for practices that are considered very poor. In the distant future, if we find a way to eliminate passwords completely, to the point where only an idiot would depend on one, then things would change and the entire concept would be considered security through obscurity. Similar things have happened in the past. For example, WEP used to be considered secure, now only a fool would use it.

When I say that cryptographic algorithms aren't included, once again what I mean is that the concept of obfuscating your data through the use of a cryptographic algorithm itself is not supposed to be considered security through obscurity, because although most algorithms will eventually be broken, right now some of them are considered to be extremely safe. We aren't ready to abandon our most secure cryptographic protocols, and so the concept of cryptography itself doesn't qualify as a very poor security practice.

There are certain situations where a cryptographic system can serve as an example, such as the example you gave where the algorithm is hidden in order to 'keep it secure.' Another example would be when advances in computing power allows for a previously secure protocol to be broken through brute force. When it becomes trivially easy to do so, use of the specific technology would be accurately described as a form of security through obscurity.

So in practice, what happens quite a bit when two knowledgeable people are having an academic conversation about the theory of security through obscurity, we are taking for granted that passwords should be properly secured. We are also taking for granted the fact that we shouldn't be using broken or unproven cryptographic protocols. If we had to stop and explain the semantics behind security through obscurity to other security professionals it would be like a couple of senior software engineers having to remind each other what a global variable is every single time they want to talk about a complex engineering issue.

I hope I've done a better job of explaining the statements I made, I can see how they may have been overly vague, but I was focusing on your claim that the SSID broadcasts aren't a valid example of security through obscurity.

>Seriously, where do you work anyway?

This is extremely unnecessary and unproductive.