Author Topic: Encryption system teardown - nice pics of antitamper methods  (Read 3894 times)

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Online daqq

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While looking for something else I came across this site:

http://www.cryptomuseum.com/crypto/gretag/720/index.htm

There are various other machines there, not all of them with internal pics of guts, but very interesting all the same. On this particular device I found the anti-tamper system very interesting:

Mercury tilt switch: http://www.cryptomuseum.com/crypto/gretag/720/img/301821/046/full.jpg
Module cover: http://www.cryptomuseum.com/crypto/gretag/720/img/301821/011/full.jpg
Module cover detail: http://www.cryptomuseum.com/crypto/gretag/720/img/301821/020/full.jpg
(removal or destruction of the cover would result in detection and anti tamper action)
There's also a photosensor. They took it seriously.

Enjoy,

David
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Online daqq

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Re: Encryption system teardown - nice pics of antitamper methods
« Reply #1 on: July 11, 2014, 09:30:44 am »
This one's interesting as well: http://www.cryptomuseum.com/burst/r014d/index.htm
Soviet tech is always somewhat different  :)
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Offline mcinque

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Re: Encryption system teardown - nice pics of antitamper methods
« Reply #2 on: July 11, 2014, 11:10:42 am »
+1
Fantastic!
I'm basically still a rookie and because of this, even with the best intentions, I often say bullshits
 

Offline bwat

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Re: Encryption system teardown - nice pics of antitamper methods
« Reply #3 on: July 11, 2014, 11:30:45 am »
This one comes with its own scope: http://www.cryptomuseum.com/spy/r355/index.htm.
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Offline sfiber

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Re: Encryption system teardown - nice pics of antitamper methods
« Reply #4 on: July 11, 2014, 11:38:07 am »
excellent!!can you post more photo of inside it.I always like this stuff
 

Offline dexters_lab

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Re: Encryption system teardown - nice pics of antitamper methods
« Reply #5 on: July 11, 2014, 11:52:49 am »
nice! thanks for sharing
"A common mistake people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." - Douglas Adams
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Online daqq

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Re: Encryption system teardown - nice pics of antitamper methods
« Reply #6 on: July 11, 2014, 11:54:48 am »
Quote
excellent!!can you post more photo of inside it.I always like this stuff
I just stumbled upon it by chance - see first post. If you are interested in tamper resistance stuff, there's a fair amount of teardowns on the internets:
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Offline echen1024

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Re: Encryption system teardown - nice pics of antitamper methods
« Reply #7 on: July 13, 2014, 08:30:02 pm »
That looks awesome! Expensive, specialized electronics is always fun to teardown!
I'm not saying we should kill all stupid people. I'm just saying that we should remove all product safety labels and let natural selection do its work.

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Offline MJR

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Re: Encryption system teardown - nice pics of antitamper methods
« Reply #8 on: July 13, 2014, 08:53:55 pm »
I would be interested in how the random noise generator worked on the gretacoder 720. Built with 2 video amplifiers. Time to tinker, but need to research it first.
 


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