[Cryptography] PGP -- Can someone help me understand something?

[Dennis E. Hamilton]

Here is an experiment for you.  Take any reasonable message and make two separate encryptions of it using the same public key.  Compare the ciphertext files that are produced.
 
This should reveal to you that there is more involved when using a public-key system.
 
*	Dennis
 
From: cryptography <cryptography-bounces+dennis.hamilton=acm.org at metzdowd.com> On Behalf Of Matt Maxson
Sent: Wednesday, August 8, 2018 23:46
To: Cryptography Mailing List <cryptography at metzdowd.com>
Subject: [Cryptography] PGP -- Can someone help me understand something?
 
[orcmid] [ … ]
 
It begins with this post I recently saw on the Proton Mail reddit:  https://www.reddit.com/r/ProtonMail/comments/95jmb5/question_about_export/
 
The question was, basically, if someone has access to both a PGP encrypted email and a plain text version of the same email, can an attacker determine the key.  The answer given was "no".
 
 
 
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.metzdowd.com/pipermail/cryptography/attachments/20180809/0b8ab3d5/attachment.html>