Page MenuHome GnuPG
Create Task
Maniphest T1419

pipe-through of clearsigned documents adds an extra newline
Closed, ResolvedPublic
Actions

Description

Piping a clearsinged document through gpg should output the body of the message.
Currently, it adds an extra newline to the end of the output, the effect of
which is that the output does not verify with the signature, if detached.

In the attached archive, there are three files:
cleasigned.asc - a cleasigned test document
signature.asc - the signature detached from clearsigned.asc
body.asc - the plaintext body of the signed message

The following would work:
gpg --verify clearsigned.asc
gpg --verify signature.asc body.asc

However
gpg < clearsigned.asc > body.txt
would result in a body.txt that is NOT identical to body.asc, the difference
being an extra newline.

Details

Version
gpg (GnuPG) 1.4.10

Related Objects

Event Timeline

nagydani set Version to gpg (GnuPG) 1.4.10.Jul 16 2012, 1:59 AM
nagydani added projects: gnupg, Bug Report.
nagydani added a subscriber: nagydani.

354_example.tar.gz413 BDownload

nagydani renamed this task from pipe-though of clearsigned documents adds an extra newline to pipe-through of clearsigned documents adds an extra newline.Jul 16 2012, 2:05 AM
• werner added a project: Not A Bug.Jul 18 2012, 12:51 PM
• werner added a subscriber: • werner.

That's a known limitation of the protocol. We need this to allow for empty
mesages. Clearsigned messages are anyway only a compromise.

nagydani added a comment.Jul 18 2012, 3:02 PM

How would not emitting an extra LF interfere with empty messages?
Has this decision been debated? If so, could you point me to the discussion?
Thank you in advance!

• werner added a comment.Jul 19 2012, 1:21 PM

I would need to look it up myself. This has been implemented back in 1998 or 99.

• werner closed this task as Resolved.Jun 2 2014, 8:01 PM
• werner claimed this task.
dkg mentioned this in T7106: Trailing newline trouble in clearsigned message generation and verification.Fri, Apr 26, 5:01 PM