[ExI] bitcoin again

[Bryan Bishop]

On Thu, Mar 31, 2016 at 2:29 PM, spike <spike66 at att.net> wrote:

> So now, any time the news majors announce a hospital has been hacked, the
> hospital can expect to get jillions of offers to unlock the files for a
> small amount of bitcoins.  It would be impossible for the victim to know
> which one is genuine, if any.


All of that is completely false; there are multiple ways to demonstrate
effectiveness (the most trivial is decrypting a single file). One
particularly interested method is using a zero-knowledge proof of
decryption:
https://bitcoincore.org/en/2016/02/26/zero-knowledge-contingent-payments-announcement/
Payment would only be retrievable in the event that the party has a correct
proof that they are able to correctly decrypt the files.

- Bryan
http://heybryan.org/
1 512 203 0507
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