What would an Internet passport be?

| Comments (3) | COMSEC
Eugene Kaspersky argues that one should need to have a "passport" to use the Internet (via /.):
That's it? What's wrong with the design of the Internet?

There's anonymity. Everyone should and must have an identification, or Internet passport. The Internet was designed not for public use, but for American scientists and the U.S. military. That was just a limited group of people--hundreds, or maybe thousands. Then it was introduced to the public and it was wrong to introduce it in the same way.

I'd like to change the design of the Internet by introducing regulation--Internet passports, Internet police and international agreement--about following Internet standards. And if some countries don't agree with or don't pay attention to the agreement, just cut them off.

Isn't it enough to have everyone register with ISPs (Internet service providers) and have IP addresses made known?

You're not sure who exactly has the connection. I can have a Wi-Fi connection and connect using a password, or give away the password for someone else to use that connection. Or the connection could be hacked. Even if the IP address is traced to an Internet café, they will not know who the customer or person is behind the attacks. Think about cars--you have plates on the cars, but you also have driver licenses.

Unfortunately, Kaspersky didn't elaborate on how this would actually work, which is too bad because it's not really that clear to me how one would develop such a system. Let's stipulate for the moment that we had some mechanism for giving everyone who was allowed to access the Internet some sort of credential (the natural thing here would be an X.509 certificate, but of course you could imagine any number of other options). All that you would need to accoplish this would be to somehow positively identify every person on the planet, get them to generate an asymmetric key pair, issue them a certificate, and give them some way to move it around between all their Internet-connected devices (and it's not at all unusual to have both a PC and a smartphone), as well as find some way for them to use it in Internet cafes, libraries, etc. And of course, having the credential is the easy part: we still need to find some way to actually verify it.

At a high level, there are three places we could imagine verifying someone's credentials: (1) at the access point (2) in the network core (3) at the other endpoint. None of these is particularly satisfactory:

Access Point
The naive place to verify people's identity is at the point where they connect to the Internet. Of course, in the vast majority of cases (home service, mobile, etc.), no "passport" is required, because the user has a subscriber relationship with the service provider, so as long as the service provider keeps adequate records it's relatively straightforward to track down who was using any given IP address at a given time. This leaves us with a variety of "open access" type situations where someone has a network that anyone can use, such as libraries, conferences, and people's home networks. One could imagine requiring that those people program their network access elements to authenticate anyone who wanted to use them, but since this would require reprogramming an untold number of Linksys access points which are currently running whatever firmware they were loaded with when they were manufactured in 2006, this doesn't sound like a very practical proposition. Even if one did somehow manage to arrange for a mass upgrade, people who run open APs don't have a huge amount of incentive to keep them secure, so it wouldn't be long before there was a large population of APs which couldn't be trusted to properly report who had used them and we're back to where we started.

Network Core
Moving outward from the access point, one could imagine doing authentication somewhere in the network core (which is sort of what Kaspersky's comments imply). Unfortunately, this would involve some pretty major changes to the Internet architecture. Remember that as far as the core is concerned, there are just a bunch of packets flowing from node to node and being switched as fast as possible by the core routers which don't have any real relationship with the endpoints. Unless we're going to change that (pretty much out of the question no matter how ambitious you are), then about all that's left is having the endpoints digitally sign their packets with their credentials. And of course, those signatures would then have to be verified at something approaching wire speed (if you don't verify them in real time, then people will just send bogus signatures; if you only verify a fraction, then you need some sort of punishment scheme because otherwise you just reduce traffic by that fraction). And of course, the signatures would create massive packet bloat. So, this doesn't sound like a very practical retrofit to the existing Internet.

Other Endpoint
This leaves us with verifying the users's identity at the other endpoint, which is probably the most practical option, given that we already have technology for this in the form of IPsec, SSL/TLS, etc. Again, we have the retrofit problem, and also a huge incentive issue; most sites are primarily interested in having a lot of visitors and don't much care who they are, so they're not really incentivized to verify user identities, especially during the (extended) transition period when requiring authentication would mean rejecting traffic from legitimate visitors. Still, it's at least technically possible, though it's not clear to me why one would want to require this form of authentication through some regulatory process: the major entity which is hurt by being unable to verify whoever is sending them traffic is after all the other endpoint, so if they don't care to authenticate their peer, why would we want to require it.

 

Unfortunately, even the above issues (which aren't very promising) aren't the real obstacle. Remember that we're going to require everyone who wants to access the Internet have one of this credentials. That includes your grandmother, who hasn't ever run Windows update and has over half of her hard drive taken up with assorted varieties of malware. It's not going to be at all difficult for attackers to get their hands on an arbitrary number of "Internet passports" belonging to other people (remember that attackers don't have any trouble getting credit cards, which people actually do have some interest in protecting).

The bottom line, then, is that unless I'm missing something, it's not clear to me that fits Kaspersky's description is likely to be particularly useful.

3 Comments

I can't count how many times I hear some variant of "If we would only [do X], we would fix all the problems on the Internet [or some subset thereof]." Invariable, doing [X] is entirely impractical, as you say, without a major remodeling of the entire Internet system, and even if we could do [X], new problems or attacks would emerge that would be as bad as the original ones.

In the spam world, we refer to these as FUSSPs -- Final Ultimate Solutions to the Spam Problem.

Personally, I think we should make incremental improvements where we can, and keep working toward a better defended, more robust system, but in the end, the benefit of an open Internet outweighs the problems.

Quite simply the control that Kaspersky seeks to achieve is not possible. Using his strained metaphor - even with drivers licenses, interstate police, checkpoints etc theft and crime still happens. Not to mention the balance you have to achieve on individual rights and innovation.

The easiest way to reply to these types of proposals is an economic one. "If what you propose is possible, it would save the world tens of billions of dollars a year, if not more. This suggests that any vendor in this area could quickly reap billions of dollars, which is a mighty large number. The fact that no vendor is doing any serious investment in reaping those billions of dollars indicates that everyone other than you has decided that it is not worth the investment. What makes you that much smarter than all the major vendors?"

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