451. Seahorse plugins on gnome 3.4 -- PGP encrypting/decrypting in nautilus

Once upon a time it was possible to de/encrypt in gedit, and life was good. Then GNOME 3 came along, and the seahorse plugin for edit disappeared. (presumably you might be able to write a script to use with the External Tools gedit plugin).

It re-emerged as a plugin for Nautilus instead.

I'm showing version 3.4.0 since I'm on GNOME 3.4, and who knows what API has broken in between this and 3.8...anyway, look at https://git.gnome.org/browse/seahorse-nautilus/ for different versions.

There are probably more build dependencies than the ones I'm listing.

sudo apt-get install libcryptui-dev libnautilus-extension-dev libgpgme11-dev checkinstall autoconf automake checkinstall
wget https://git.gnome.org/browse/seahorse-nautilus/snapshot/seahorse-nautilus-3.4.0.tar.gz
tar xvf seahorse-nautilus-3.4.0.tar.gz 
cd seahorse-nautilus-3.4.0/
./autogen.sh

GnuPG Version:           gpg (GnuPG) 1.4.12
GPGME Version:           1.2.0
Notification Support:    yes

Now type `make' to compile seahorse-nautilus

sudo checkinstall --fstrans=no

-  Maintainer: [ root@beryllium ]
1 -  Summary: [ seahorse-nautilus 3.4.0 ]
2 -  Name:    [ seahorse-nautilus ]
3 -  Version: [ 3.4.0 ]
4 -  Release: [ 1 ]
5 -  License: [ GPL ]
6 -  Group:   [ checkinstall ]
7 -  Architecture: [ amd64 ]
8 -  Source location: [ seahorse-nautilus-3.4.0 ]
9 -  Alternate source location: [  ]
10 - Requires: [  ]
11 - Provides: [ seahorse-nautilus ]
12 - Conflicts: [  ]
13 - Replaces: [  ]

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Encrypting:
Open nautilus, select a text file and right click:

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Decrypting:
Simple:

Although in my case I had kde-full installed, which pulled in kgpg:

If you're having other issues with decrypting, check that the mime associations are correct:

xdg-mime query filetype plaintext.file.pgp 

application/pgp-encrypted