Today, slashdot led me to FireGPG, a firefox extension that integrates GPG for all textareas, including having google support. I will be signing this message with my key (ID 78F34CB8). In the interest of having the key check out, I am going use the "unfiltered" format. I suspect messages which are filtered will be modified. You can also encrypt the contents of the text fields of course, but I will only sign my message.
The extension is in beta, so all bets are off.
If you are an Ubuntu Linux user, you can install the "seahorse" GPG key manager. It also makes ssh keys, which is nice. You will need to add the "Passwords and Encryption Keys" item from /usr/share/applications to a menu (I put it in Preferences.)
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: http://firegpg.tuxfamily.org iD8DBQFGZGt1nmHLwHjzTLgRAuYlAKCQKDBB0ulnGB0yWyfGVP9rEuQNzACdHV26 IDXKRlaDpOO1aaguIknE15A= =y4UB -----END PGP SIGNATURE-----Followup: The test is a failure. I cannot verify the message. Looks like this isn't what it's good for. I'll try encryption next:
-----BEGIN PGP MESSAGE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: http://firegpg.tuxfamily.org hQIOA1lU6fXLm/q3EAgAj+ngDNNC7kWBwf6YGtTr/595vO/Gvg2GiUYNU5OuZ1wN 00V9Y89x2UzWgQRhIc5VFCBGFYXMYSdAjh6j0LG4SRdLVRWyQJ4NUHWNefgDxBNW FGnPLUMLZkSuzNydt5zZ8tu36wVosGR95FaUHostgUcRTWX8LcaL3/MzXgRy8rZi 0vKzAMK56920Ibrf0kA3fSXJXqFR3uBUmAswxZ3rowcHiyYm3cmEvYhlJJ3D0pAo vKeL6z7E5noa2I15SCUHnQvNK8Nd0ighQ+Qw1NonpNSPYXJLgaY/RuhD2v3rxkme 6cqIs1E9VcRELnOykUfzdW2rZ4OKlDncwk9JFJEaoQgAqIKAFcw7O+GG+yOTSw7J wlEFWWXkkYg/xpZZI3+BRM91nejUMzqj7yxE+Pf8H35UK1Wmyoq6HU+7ki3G+xT/ DxxKLbpGqgDsOfxlcGDMP99Ih1airGTAJw4d5XufYeY59s7kGHwb72HyydW7wnWb i2kcX3u2y8dpauAzhEk9fAb2WZhGs1ammqQeIxD9Xk/OJf0X4iu2UESx3QsSFPtF 1V9zIoeW8z8sYReeRw7REwcj74lEMR2wTsZ0p/ZIniNiLOojl0IcLaCo5kl0QCWQ 9rTY2nBOoLCctQJPt1X0gWF4YbvUm/pTyri32Yv/tvrgJN2xMolOY2g/te3a6jQz VtLpAULDbZZ29jvvrLn7EAy1PU+IYEBoj8Vw8c/CSg/C/E6VTYkwlAIhF3pYXT+v i0FB4ljhWbsDEBzdJVAjGR8LkVbVK0BXArkRbLFgXsB/bQDIGEpIuO/xQNYydFkG mjBgGUxESxR5DlDRb/iiMJpgc1+qkhFetmDvdxsrzjk1qrDKZ1lOwtqCjpSTHphR lKkzVpvIcB/6uOpNN+4KYvAcRKDRnJzri10ra2CSo2X0lMdLAMl+BooLXaV5jMO/ i4p4hRjkr6IJj3zswlS1lCCukWiBJssc6OwpO4VoD3UMJrYAxA0MKmx67ezq7Y3X KMGmxiO+BwMVG0Sq3LmYymAYGxQ6XUvl2FVNt9pBTtjRBngzsbNbnVrf2Nju5rlm rq9gSRfpoqfjZhkkOHZAxuYAaekaEcl4LfJ1VW3Oj9tZmOAe2zaF5Kz3rKK+X5di f3rNExMxXL/QdkOTSSBhcMHJNQvpe+ZfhdNyaqJKb7Uc7+JeNZ79uUENhugC09oU ZWc9aZFX9SoKwmwcckUzCUjZ9rwNUDb4scu4r+YBL/IAkkl5sN6mflGCbV4Nvub0 1TORY4F3HwJ74QmRxdQkwKRIh5jRfjE7vLp5GN7dH+v+ceU0xeRi5Iv6lzYnGLzf lzY5hFhhBtkPCusVLapal2qdT3EiDU0ZB6YVf1/mro/ByrSCurWJiSh91weHHvHr vReD9kfRSwCs3Mci+KNwEQGs42pkI/9mYQwtuKiKoO9eFPQJ6B7jGUc6N8hEOywC 1dWqPqAi1E9DeTAj7CJ9bZm4XAqL2u7j5G+R+pAKuLDxHWn1U3B1f/Fiv26kTeMa alHl7SAtY77H0pfsIO9tVy1lBkFbDQ== =+KAW -----END PGP MESSAGE-----The above is two paragraphs of Lorem Ipsum.
It decrypts to:
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Sed vitae sapien. Mauris purus. In a dolor. Aliquam nec arcu. Vestibulum sapien. Nullam rutrum, metus nec adipiscing ultrices, risus ante ultricies risus, non lobortis turpis lacus at orci. Integer semper purus eget dolor. Aenean dui. Quisque blandit. Integer vitae felis in felis posuere iaculis. Proin vehicula, elit sit amet lacinia interdum, leo arcu vestibulum magna, ac pulvinar sem diam id eros. Praesent mauris. Nulla tellus erat, congue sed, vulputate ut, euismod in, sem. Maecenas sed ligula ut mi convallis ullamcorper.
Proin at ligula. Vivamus a erat. Praesent molestie. Aliquam ac mauris eget quam ultricies posuere. Proin blandit enim. Proin vel eros. Etiam id libero eget orci nonummy lacinia. Fusce suscipit, arcu commodo imperdiet consectetuer, odio ante iaculis diam, eu auctor mi augue in nulla. Integer purus. Proin scelerisque arcu id nisi. Aenean varius quam ac tortor. Proin nec ante a tortor consequat vestibulum. Fusce sit amet urna sed ipsum adipiscing consequat. Nunc pretium iaculis lorem. Integer a leo vitae tellus convallis elementum. Donec lobortis augue nec tortor. Phasellus aliquam.
So at least that part works (of course you can't decrypt this, because it was encrypted for my key...)