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\input texinfo |
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@setfilename GPGOE |
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This file describes the GPGOE functions and the integration |
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in the Outlook Express mailer. |
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This file is free under the terms of the GNU General Public License v2. |
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Copyright (C) 2006, 2007 Timo Schulz |
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@settitle GPGOE - the GnuPG plug-in for Outlook Express |
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@section Requirements for GPGOE |
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|
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First you need to have a working GnuPG installtion on the machine you |
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plan to install GPGOE. If you don't have GPG in your machine, please |
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visit http://www.gnupg.org and download the latest GPG version there. |
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It comes with a graphical installer so there is no need to do this |
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step manually. |
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|
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You need at least Windows 2000/XP and at least Outlook Express 6.0 |
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or higher. The plug-in will not work with earlier versions of Express. |
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|
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@subsection Installation on Vista |
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|
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Because of the nature of the plugin, it contains a lot of tricks |
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for the Express integration, it cannot be guranteed, that it works |
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on Vista in general or the Outlook Express version that comes |
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with Vista. Feedback on the use with Vista is welcome but the |
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adjustment, if possible at all will take a lot of time. |
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|
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@section Installation of the Plug-in |
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|
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It is always recommend to use the latest version of the plug-in. You |
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can download it from http://wald.intevation.org/projects/gpgoe. |
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Download the zip file with the binaries inside and unpack them in |
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a folder. All files need to be in the same folder, so if you change |
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the folder don't forget to move all files. |
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|
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To activate the plug-in you need to start gpgoeinit.exe. You should |
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now see a little (lock) icon in the taskbar which indicates that the |
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plug-in is running. If you want to quit the program, double click on |
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the (lock) icon and confirm the unload. |
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|
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Now the plug-in is active. |
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|
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@section Integration into Outlook Express |
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|
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You have to enable the "Encrypt" and "Sign" items in the |
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toolbar, in the "New Message" dialog to allow GPGOE to |
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encrypt and/or sign the message. |
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|
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There are no new icons for the plug-in and this means you |
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can either use S/MIME or OpenPGP but never at the same time. |
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If you want to use S/MIME again, just unload the plugin (quit |
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gpgoeinit.exe). |
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|
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@strong{It is very important to close Outlook Express before you |
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unload the plug-in} |
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|
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@section How to use the plug-in |
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|
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@subsection Encrypt a message |
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|
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To encrypt a mail, you need to check the "Encrypt" toolbar button. |
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If you click the "Send" button the plug-in will try to map each email |
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address to a user-ID of an existing OpenPGP key. If no unresolved |
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recipients were found, the mail is encrypted and stored in the outbox |
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folder. If one or more recipients couldn't be mapped to a key, the |
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recipient dialog is shown to manually select the recipients. |
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|
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@subsection Sign a message |
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|
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To sign a message, you need to check the "Sign" toolbar button. |
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If you click the "Send" button, GPG will figure out the default |
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signing key and the plug-in openes a passphrase dialog to enter |
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your passphrase for this key. If you entered it and the passphrase |
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was correct, the plugin will sign the message and store it in |
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the outbox. |
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|
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@subsection Sign and Encrypt a message |
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To sign and encrypt a message, you have to check both toolbar |
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buttons ("Sign" and "Encrypt"). The procedure is the same as |
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in encrypt-only when one or more email addresses couldn't be |
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mapped. Then the default key is used to sign the plaintext |
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before it is encrypted with the selected recipients. |
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|
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@subsection Decrypt and/or verify a message |
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If you received an OpenPGP message, you can just double-click |
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the message to open it. The plug-in will figure out if it is |
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encrypted or signed and will start the correct procedures. For |
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decryption you need to enter your passphrase, otherwise the |
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verify dialog is shown which contains information about the |
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signature status. |
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You can also use the "Next" and "Previous" toolbar buttons to |
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jump to the next message or to go back to the previous. The plug-in |
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will figure out the message status and will take the needed steps. |
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If the message is neither signed nor encrypted, no action is performed. |
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|
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@subsection Reply to an encrypted message |
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Newer versions of the plug-in provide a feature to decrypt the |
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message before the text is used in the reply mail. As a result, |
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the reply message will contain the plain text instead of the encrypted |
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GPG armored message. |
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This feature is automatically used whenever the user clicks on "Reply" |
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or "Reply All" in the Outlook main window. But only in the case, the |
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mail is actually encrypted. Optionally the plug-in will ask for a |
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key passphrase. |
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|
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@section Additional information and limitations of the GPGOE plug-in |
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|
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@itemize @bullet |
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@item |
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If you manually installed GPG and GPGoe, please make sure that |
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you installed GPG at a standard place or create at least the gpgBinary |
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registry entry. This is not needed if you use an automatic installer |
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like GPG4WIN. |
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|
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@item |
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Due to the fact the plug-in uses the clipboard for data transfer, |
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the clipboard itself can be only of limited use to copy/paste messages |
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into the mailer window or elsewhere. Newer versions of the plug-in |
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save the original clipboard text before encryption/signing and the |
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text is restored after the GPG operation ends. |
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@item |
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The current version of the plug-in will NOT encrypt any attachments |
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which are attached to the message. You either need to encrypt them |
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before or send them in cleartext. For the file encryption it is |
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recommend to use GPGee or WinPT. |
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The same needs to be done when an encrypted mail with encrypted |
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attachments is in the inbox folder. You need GPGee or WinPT to |
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decrypt the saved file. |
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@item |
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Even so the plug-in supports native line endings, which means you |
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can properly exchange mails with Linux or Apple users, it is likely |
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that there are problems with the charset. Newer versions of the |
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plug-in try to handle UTF8 encoding correctly but even so it cannot |
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be 100% assured that the receiver can handle the text in all cases. |
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|
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@item |
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If you want to import keys or attach keys to a mail, you have to |
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use an external key manager. WinPT is recommend in this case. It |
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contains features to send public keys to mail recipients and also |
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to export keys via the clipboard so you can easily paste the key |
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into the text body of the message. The current version of the |
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plug-in automatically uses WinPT for key import if the program |
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is available and running. |
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|
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@item |
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Currently signing can be only done with the default signing key. |
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If you want to change the default signing key, you can use WinPT |
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to select a different key and then GPGOE will use this one. |
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@item |
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GPGOE is NOT able to handle PGP/MIME (RFC3156) style messages. |
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This means if you get such a message, the plug-in will not be |
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able to automatically decrypt it. |
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And due to the fact that the decrypted "attachment" will still |
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contain a lot of control and coding information, you cannot simply |
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decrypt it with WinPT/GPGee and use the output. |
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@end itemize |
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@bye |