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gpg: Change --show-session-key to print the session key earlier.

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* g10/cpr.c (write_status_strings): New.
(write_status_text): Replace code by a call to write_status_strings.
* g10/mainproc.c (proc_encrypted): Remove show_session_key code.
* g10/decrypt-data.c (decrypt_data): Add new show_session_key code.
--

This feature can be used to return the session key for just a part of
a file.  For example to downloading just the first 32k of a huge file,
decrypting that incomplete part and while ignoring all the errors
break out the session key.  The session key may then be used on the
server to decrypt the entire file without the need to have the private
key on the server.

GnuPG-bug-id: 1389
Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2013-12-11 10:20:15 +01:00
parent 59207a86e5
commit 101a54add3
5 changed files with 50 additions and 21 deletions
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7
doc/DETAILS
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@ -459,9 +459,10 @@ pkd:0:1024:B665B1435F4C2 .... FF26ABB:
*** SESSION_KEY <algo>:<hexdigits>
The session key used to decrypt the message. This message will
only be emitted when the special option --show-session-key is
used. The format is suitable to be passed to the option
--override-session-key
only be emitted if the option --show-session-key is used. The
format is suitable to be passed as value for the option
--override-session-key. It is not an indication that the
decryption will or has succeeded.
*** BEGIN_ENCRYPTION <mdc_method> <sym_algo>
Mark the start of the actual encryption process.