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GPG Services: how to create binary signatures

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stefanomarty

24 Nov, 2019 03:11 PM

Which of our tools is giving you problems?

GPG Service

Attach a screenshot of the version info for all installed components (how to: https://gpgtools.tenderapp.com/kb/faq/where-can-i-find-version-info...):

I just updated to GPG_Suite-2019.2

Describe your problem. Add as much detail as possible.

The standard output for GPG Services signatures is ASCII Armor. According to this article:
https://gpgtools.tenderapp.com/kb/gpg-services-faq/gpg-services-exp...
the default can be switched off and set back to binary. I tried the suggested commands, but I still get ASCII armor signatures.

What did you expect instead

I expected a signature in binary form.

Describe steps leading to the problem.

1. Modify the standard output with this command in terminal:
   

   defaults write ~/Library/Preferences/org.gpgtools.gpgservices UseASCIIOutput -bool NO
   

2. Verify the parameter is changed:
   

   defaults read ~/Library/Preferences/org.gpgtools.gpgservices UseASCIIOutput
   0  <-- OK
   

3. Sign a random file in Finder
   Select the key
   Insert passphrase

4. Check the signature file
   I expected a binary file.txt.sig file, but I still get an ASCII armor file, even with the parameter set to zero.

Are you using any other Mail.app plugins?

Nope.

1. 1 Posted by Mento on 13 Dec, 2019 10:16 AM

   

   Hello,

   the UseASCIIOutput option only affects file encryption, not signatures.
   By defaults GPG Services uses the binary mode, when it encrypts a file. By setting UseASCIIOutput to YES, the encrypted files are stored using ASCII armor.

   There is currently no option to tell GPGServices to create detached binary signatures.

   Regards, Mento

   • Edit

2. Steve closed this discussion on 04 Mar, 2020 12:08 PM.