Encrypting a document with multiple keys
Hypothetical here. Let's say you are Manning and have the goods. You
publish the "security file" on Bittorrent and send the keys to a few
trusted journalists in case you get shot, while you work on the redacted
version. Since the journalists know that there are others, and because
journalists are people who can be influenced... you want to avoid a
situation where one journalist releases the key and blames it on you or
another journalist.
So, is it possible to have multiple keys able to decrypt a file, and if a
key is published, be able to attribute that key to a specific person?
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