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Products => Other Equipment & Products => Topic started by: daqq on July 11, 2014, 09:28:07 am

Title: Encryption system teardown - nice pics of antitamper methods
Post by: daqq on July 11, 2014, 09:28:07 am
While looking for something else I came across this site:

http://www.cryptomuseum.com/crypto/gretag/720/index.htm (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 (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 (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 (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
Title: Re: Encryption system teardown - nice pics of antitamper methods
Post by: daqq on July 11, 2014, 09:30:44 am
This one's interesting as well: http://www.cryptomuseum.com/burst/r014d/index.htm (http://www.cryptomuseum.com/burst/r014d/index.htm)
Soviet tech is always somewhat different  :)
Title: Re: Encryption system teardown - nice pics of antitamper methods
Post by: mcinque on July 11, 2014, 11:10:42 am
+1
Fantastic!
Title: Re: Encryption system teardown - nice pics of antitamper methods
Post by: bwat on July 11, 2014, 11:30:45 am
This one comes with its own scope: http://www.cryptomuseum.com/spy/r355/index.htm (http://www.cryptomuseum.com/spy/r355/index.htm).
Title: Re: Encryption system teardown - nice pics of antitamper methods
Post by: sfiber on July 11, 2014, 11:38:07 am
excellent!!can you post more photo of inside it.I always like this stuff
Title: Re: Encryption system teardown - nice pics of antitamper methods
Post by: dexters_lab on July 11, 2014, 11:52:49 am
nice! thanks for sharing
Title: Re: Encryption system teardown - nice pics of antitamper methods
Post by: daqq 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: https://www.youtube.com/watch?v=NFLdiK2-Uh0 (https://www.youtube.com/watch?v=NFLdiK2-Uh0)
Title: Re: Encryption system teardown - nice pics of antitamper methods
Post by: echen1024 on July 13, 2014, 08:30:02 pm
That looks awesome! Expensive, specialized electronics is always fun to teardown!
Title: Re: Encryption system teardown - nice pics of antitamper methods
Post by: MJR 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.