I am not sure if this has been discussed before or how hard it would be to implement, but I'm looking for a way to integrate a smartcard with Tor - essentially, I want to be able to host hidden service keys on the card. I'm trying to bind the hidden service to a hardware component (the smartcard) so that it can be securely hosted in a hostile environment as well as impossible to clone/move without physical access to the smartcard.

I have Tor running on the USBArmory by InversePath ( http://inversepath.com/usbarmory.html ) and have a microSD form factor card made by Swissbit ( www.swissbit.com/products/security-products/overwiev/security-products-overview/ ) up and running on it. I am a JavaCard developer myself  and I have developed embedded Linux firmwares before but I have never touched the Tor source.

Is there anyone that is willing to take on a side project doing this? Would it be just a matter of configuring OpenSSL to use the card (I haven't tried that yet)?

Thank you,

Razvan

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Razvan Dragomirescu

Chief Technology Officer

Cayenne Graphics SRL