E-mail with deniable authentication

Stefan Claas stefan.claas at posteo.de
Wed Aug 30 12:39:23 CEST 2017

Am 30.08.2017 um 11:43 schrieb Peter Lebbing:

> With a little scripting, you could create a new ECC keypair (fast!) 
> for each
> message, sign the keypair with your normal key, sign the message with the ECC
> keypair. And when you want to backpedal on a signed message, publish the private
> ECC key and say "look, anybody who downloaded my private key off the web could
> have signed that message".
But then it would be imho advisable that you use a different timestamp 
(time in the future), because
when verifying the published message the timestamp would be earlier than 
the time the sec key would
have appeared on the net, right?


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