[nktr1]

Just an idea that might not be very practical but what if there was X number of "master" public keys managed by trusted groups that could be used to verify other public keys and they were posted in plain text on billboards across towns (maybe could replace CAs?)... just like you can use the Debian keys to verify the Tails OS key..

[dsr_]

If it became at all popular, some people would have to know the private key half (or be able to decrypt it for use, same thing)... and those people would be subject to bribery, coercion, and rubber-hose cryptanalysis. I would not want to be one of them; I have relatives whom I love.