OpenPGP & Enigmail \\
[[http://enigmail.mozdev.org/home/index.php.html]]

Quick start guide \\
[[http://enigmail.mozdev.org/documentation/quickstart.php.html]] \\
[[http://enigmail.mozdev.org/documentation/enigmail-quickstart.pdf]]

Install GnuPG on local computer \\
[[http://www.gnupg.org/]] \\

Windows uses version 1.4.11 as of 10 February 2011 - accept default settings \\
[[ftp://ftp.gnupg.org/gcrypt/binary/gnupg-w32cli-1.4.11.exe]]

Install right Enigmail package for your system. \\
[[http://enigmail.mozdev.org/download/index.php.html]] \\
Download the .xpi file to desktop and then use add-ons in Thunderbird and Seamonkey to install the package from the locally-saved file.

After installing, open the OpenPGP Preferences and make sure the GnuPG path is set (/usr/bin/gpg or C:\Program Files (x86)\GNU\GnuPG\gpg.exe) and restart Thunderbird.

Inside Enigmail, import local copy of pubring.gpg and secring.pgp \\
(Delete any old keys there)

Remember the key passphrase is stored securely elsewhere.

Import other people’s keys from [[http://pgp.mit.edu/]]

Test the sending and receiving of encrypted messages.

May want to adjust preferences inside Enigmail.

---------------------------------------------------------------
Useful reference for using keys on Linux:

[[http://www.debuntu.org/how-to-import-export-gpg-key-pair]]

[[http://aplawrence.com/Basics/gpg.html]]

---------------------------------------------------------------
If Enigmail seems to freeze, open an xterm and follow instructions below:

If you get this:
<code>
[juckins@metroliner: ~]$ gpg-agent
gpg-agent[18835]: can't connect to `/home/juckins/.gnupg/S.gpg-agent': No such file or directory
gpg-agent: no gpg-agent running in this session
</code>

Then follow tip on http://forums.gentoo.org/viewtopic-t-642131-highlight-gpgagent.html

<code>
juckins@metroliner: ~/.gnupg]$ eval 'gpg-agent --daemon --use-standard-socket'
GPG_AGENT_INFO=/home/juckins/.gnupg/S.gpg-agent:18933:1; export GPG_AGENT_INFO;

[juckins@metroliner: ~/.gnupg]$ gpg-agent
gpg-agent: gpg-agent running and available
</code>

If that all works properly, then edit .bash_profile like this:
<code>
# start gpg-agent (for Thunderbird Enigmail)
eval 'gpg-agent --daemon --use-standard-socket 2>/dev/null'
</code>

Other possible help: http://www.linuxquestions.org/questions/linux-security-4/gpg-gpg-agent-can%27t-connect-to-root-gnupg-s-gpg-agent-611843/