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1 \input texinfo
2
3 @setfilename GPGOE
4
5 This file describes the GPGOE functions and the integration
6 in the Outlook Express mailer.
7
8 This file is free under the terms of the GNU General Public License v2.
9
10 Copyright (C) 2006 Timo Schulz
11
12 @settitle GPGOE - the GnuPG plug-in for Outlook Express
13
14 @section Requirements for GPGOE
15
16 First you need to have a working GnuPG installtion on the machine you
17 plan to install GPGOE. If you don't have GPG in your machine, please
18 visit http://www.gnupg.org and download the latest GPG version there.
19 It comes with a graphical installer so there is no need to do this
20 step manually.
21
22 You need at least Windows 2000/XP and at least Outlook Express 6.0
23 or higher. The plug-in will not work with earlier versions of Express.
24
25
26 @section Installation of the Plug-in
27
28 It is always recommend to use the latest version of the plug-in. You
29 can download it from http://wald.intevation.org/projects/gpgoe.
30 Download the zip file with the binaries inside and unpack them in
31 a folder. All files need to be in the same folder, so if you change
32 the folder don't forget to move all files.
33
34 To activate the plug-in you need to start gpgoeinit.exe. You should
35 now see a little (lock) icon in the taskbar which indicates that the
36 plug-in is running. If you want to quit the program, double click on
37 the (lock) icon and confirm the unload.
38
39 Now the plug-in is active.
40
41 @section Integration into Outlook Express
42
43 You have to enable the "Encrypt" and "Sign" items in the
44 toolbar, in the "New Message" dialog to allow GPGOE to
45 encrypt and/or sign the message.
46
47 There are no new icons for the plug-in and this means you
48 can either use S/MIME or OpenPGP but never at the same time.
49 If you want to use S/MIME again, just unload the plugin (quit
50 gpgoeinit.exe).
51
52 @section How to use the plug-in
53
54 @subsection Encrypt a message
55
56 To encrypt a mail, you need to check the "Encrypt" toolbar button.
57 If you click the "Send" button the plug-in will try to map each email
58 address to a user-ID of an existing OpenPGP key. If no unresolved
59 recipients were found, the mail is encrypted and stored in the outbox
60 folder. If one or more recipients couldn't be mapped to a key, the
61 recipient dialog is shown to manually select the recipients.
62
63 @subsection Sign a message
64
65 To sign a message, you need to check the "Sign" toolbar button.
66 If you click the "Send" button, GPG will figure out the default
67 signing key and the plug-in openes a passphrase dialog to enter
68 your passphrase for this key. If you entered it and the passphrase
69 was correct, the plugin will sign the message and store it in
70 the outbox.
71
72 @subsection Sign and Encrypt a message
73 To sign and encrypt a message, you have to check both toolbar
74 buttons ("Sign" and "Encrypt"). The procedure is the same as
75 in encrypt-only when one or more email addresses couldn't be
76 mapped. Then the default key is used to sign the plaintext
77 before it is encrypted with the selected recipients.
78
79 @subsection Decrypt and/or verify a message
80 If you received an OpenPGP message, you can just double-click
81 the message to open it. The plug-in will figure out if it is
82 encrypted or signed and will start the correct procedures. For
83 decryption you need to enter your passphrase, otherwise the
84 verify dialog is shown which contains information about the
85 signature status.
86 You can also use the "Next" and "Previous" toolbar buttons to
87 jump to the next message or to go back to the previous. The plug-in
88 will figure out the message status and will take the needed steps.
89 If the message is neither signed nor encrypted, no action is performed.
90
91 @subsection Reply to an encrypted message
92 Newer versions of the plug-in provide a feature to decrypt the
93 message before the text is used in the reply mail. As a result,
94 the reply message will contain the plain text instead of the encrypted
95 GPG armored message.
96 This feature is automatically used whenever the user clicks on "Reply"
97 or "Reply All" in the Outlook main window. But only in the case, the
98 mail is actually encrypted. Optionally the plug-in will ask for a
99 key passphrase.
100
101 @section Additional information and limitations of the GPGOE plug-in
102
103 @itemize @bullet
104
105 @item
106 If you manually installed GPG and GPGoe, please make sure that
107 you installed GPG at a standard place or create at least the gpgBinary
108 registry entry. This is not needed if you use an automatic installer
109 like GPG4WIN or GnuPT.
110
111 @item
112 Due to the fact the plug-in uses the clipboard for data transfer,
113 the clipboard itself can be only of limited use to copy/paste messages
114 into the mailer window or elsewhere. Newer versions of the plug-in
115 save the original clipboard text before encryption/signing and the
116 ext is restored after the GPG operation ends.
117
118 @item
119 The current version of the plug-in will NOT encrypt any attachments
120 which are attached to the message. You either need to encrypt them
121 before or send them in cleartext. For the file encryption it is
122 recommend to use GPGee or WinPT.
123
124 The same needs to be done when an encrypted mail with encrypted
125 attachments is in the inbox folder. You need GPGee or WinPT to
126 decrypt the saved file.
127
128 @item
129 Even so the plug-in supports native line endings, which means you
130 can properly exchange mails with Linux or Apple users, it is likely
131 that there are problems with the charset. Newer versions of the
132 plug-in try to handle UTF8 encoding correctly but even so it cannot
133 be 100% assured that the receiver can handle the text in all cases.
134
135 @item
136 If you want to import keys or attach keys to a mail, you have to
137 use an external key manager. WinPT is recommend in this case. It
138 contains features to send public keys to mail recipients and also
139 to export keys via the clipboard so you can easily paste the key
140 into the text body of the message. The current version of the
141 plug-in automatically uses WinPT for key import if the program
142 is available and running.
143
144 @item
145 Currently signing can be only done with the default signing key.
146 If you want to change the default signing key, you can use WinPT
147 to select a different key and then GPGOE will use this one.
148
149 @item
150 GPGOE is NOT able to handle PGP/MIME (RFC3156) style messages.
151 This means if you get such a message, the plug-in will not be
152 able to automatically decrypt it.
153 And due to the fact that the decrypted "attachment" will still
154 contain a lot of control and coding information, you cannot simply
155 decrypt it with WinPT/GPGee and use the output.
156
157 @end itemize
158
159 @bye

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