Trusted Platform Module based cryptography protects your secrets as well as your government’s secrets. Well, it used to. Christopher Tarnovsky by spying on its communications.
This requires physical access so it’s not quite as bad as it sounds, but this does reach beyond TPM to many of the security chips made by Infineon. This includes peripheral security chips for Xbox 360 and some chips used in cell phones and satellite TV.Christopher revealed his hack during. The method is wicked-hard, involving removal of the chip’s case and top layer, then tapping into a data bus to get at unencrypted data.
The chip still has some tricks up its sleeve and includes firmware traps that keep a look out for this type of attack, shutting down if it’s detected. Infineon commented that they knew this was possible but regard it as a low threat due to the high skill level necessary for success.Thanks Greg.Posted in Tagged, Post navigation.
TPM should take a page fromMaximiButtons (the crypto java ones)They actually put a screen inside the can to detect this type of thing along with a battery good to about 10 years. If a probe breaks the very fine screen it blanks the memory. IE self destructs.I am sure there are other ways to create self erasing chips etc so why did they know about this “one in a million” exploits and STILL not apply a few extra moments consideration to the value of the data they would be protecting.Check outshows how;). Same old security problem.
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The need to stay one step ahead of the thieves. Chances are that Tarnovsky isn’t the only one who has done this to date, but now it’s known it’s possible, that many more will be attempting it. The more people spending time attempting it can mean the process will be stream lined. Reads like access to many of the protected computers, isn’t a problem. Those who stand to loose revenue, because of hacked security are those who will drive improvements in security, and are probably second to the government in doing do.
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Interesting stuff, though I don’t have an immediate direct concern in the issue. Something else to consider is that while it gave him info on that specific chip it does not mean that he could take the information and use it to open another TPM chip from the same manufacturer. They often contain keys that are unique for each ic produced so TPM still remains viable.I saw a video once where they were producing security ic and when the dies were created there were a group of 32 connections left unconnected.
In the final stage those 32 connections were connected by a machine in a manner that made the internal key unique to that single chip. There’s a term called “Realistic Threat Evaluation” which seems to be missing here. TPM will decrease the mundane percentages of “Threat” compared to not using it. If someone is in a situation where their data being compromised warrants Flylogic’s level of destructive entry? Then they may consider using multiple layers of better total practices. Like simple prevention of any access to any devices holding risky data. Anything humans have developed “can and will” be compromised.
All we can do is report excellent work like the TPM breach in a responsible fashion! As in – contact the no-longer “inviolate” device/system’s security officer to give them lead time for safe handling.
Do that and you’re a Hero. If you skip the notification step, then publish/share an exploit that wreaks Havoc?
Well, then you risk losing all claim to being of good ethics. And by extension that risks all legit Hackerdom being tarred as indefensible criminals. Think it over damned carefully eh?
I have been doing crypto security for years. I know of only ONE perfect tried and true crypto system. One time pads. Even then, if you use them incorrectly, they will even be cracked. So no matter what you use, it comes down to following correct protocols.Pretty damn sure that if someone is able to come in, take your chip apart, that the actual breaking of this crypto system is the LEAST of your problems.
Your physical security of your information is paramount, even to the security of your crypto hardware, or software.Might want to call Schlage, and someone to watch the place a little bit better. If you do this, then the hacking of the chip and the cracking of the crypto is going to be beyond the capabilities of most. This makes the hack/crack nice to know, but not realistically possible if you are paying attention. If your physical security is good, the only person going to get this done is James Bond, and Ian Fleming is not writing much these days.