Adding recipients to an encrypted message?

[Werner Koch]

On Mon, 01 Oct 2001 16:12:54 -0400 (EDT), mbp2  said:

> then re-encrypt it again to the new person, especially if the file is large. 
> It'd be very useful if I could tell GPG to decrypt the session key using my
> private key and immediately encrypt it (just the session key) with the new

have a look at the options

$ gpg --dump-options |grep session
--show-session-key
--override-session-key

The simplest way would be something like this:

$ gpg --show-session-key -o foo.txt foo.gpg 2>&1 \
  | gpg -e -r key-escrow@privacy.gov | mail solo@u.n.c.l.e 

And on the u.n.c.l.e site Napoleon could do this:

$ gpg --override-session-key extracted_from_mail  msg_from_echelon

Well you can also use the session key to create a public key encrypted
packet and prepend it to the message - however there is no direct
support for it in GnuPG.


 Werner

-- 
Werner Koch        Omnis enim res, quae dando non deficit, dum habetur
g10 Code GmbH      et non datur, nondum habetur, quomodo habenda est.
Privacy Solutions                                        -- Augustinus