[tor-dev] adding smartcard support to Tor

Ivan Markin twim at riseup.net
Sat Oct 17 19:27:18 UTC 2015

Ken Keys:
> If the tor process is going to use the key, at some point the
> unencrypted key has to be visible to the machine running it. You would
> in any case have to trust the machine hosting the tor node. A more
> secure setup would be to run the tor node inside an encrypted VM and use
> your smartcard/dongle/whatever to unlock the VM.

The point is that one can't[*] extract a private key from a smartcard
and because of that even if machine is compromised your private key
stays safe.

[*] Not so easy, but possible.
Ivan Markin
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