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1<!DOCTYPE html>
2<html>
3 <head>
c1ea5176 4 <meta charset="utf-8" />
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614e3bf4 6 <title>Email Self-Defense - a guide to fighting surveillance with GnuPG encryption</title>
e4a684cf 7 <meta name="keywords" content="GnuPG, GPG, openpgp, surveillance, privacy, email, Enigmail" />
c1ea5176 8 <meta name="description" content="Email surveillance violates our fundamental rights and makes free speech risky. This guide will teach you email self-defense in 30 minutes with GnuPG." />
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10 <meta name="viewport" content="width=device-width, initial-scale=1" />
11 <link rel="stylesheet" href="//static.fsf.org/nosvn/enc-dev0/css/main.css" />
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12 <link rel="shortcut icon" href="//static.fsf.org/nosvn/enc-dev0/img/favicon.ico" />
13
14 </head>
15 <body>
16<!--
17 <nav class="nav">
18 <div>
19 <ul class="lang">
20 <li class="help"><a href="http://libreplanet.org/wiki/GPG_guide">Translate this guide!</a></li>
21 </ul>
22 </div>
23 </nav>
24-->
25
26<!-- ~~~~~~~~~ GnuPG Header and introduction text ~~~~~~~~~ -->
4f3e4963 27
c0fa1642 28 <header class="row" id="header">
4f3e4963 29 <div>
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30 <h1>Email Self-Defense</h1>
31
32 <!-- Language list for browsers that do not have JS enabled -->
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33 <ul id="languages" class="os">
34 <li><a class="current" href="/en">english</a></li>
c5d213fc 35 <li><a href="/es">español</a></li>
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36 <li><a href="/fr">français</a></li>
37 <li><a href="/de">deutsch</a></li>
c5d213fc 38 <li><a href="/it">italiano</a></li>
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39 <li><a href="/pt-br">português do Brasil</a></li>
40 <li><a href="/tr">türkçe</a></li>
c5d213fc 41 <li><a href="/ro">română</a></li>
c7ea9048 42 <li><a href="/ru">русский</a></li>
8fd4a69a 43 <!--<li><a href="/ml">മലയാളം</a></li>-->
d27e43aa 44 <!--<li><a href="/ko">한국어</a></li>-->
c7ea9048 45 <li><a href="/ja">日本語</a></li>
c5d213fc 46 <li><a href="/el">ελληνικά</a></li>
8f538927 47 <!--<li><a href="/ar">العربية</a></li>-->
c7ea9048 48 </ul>
c7ea9048 49
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50 <ul id="menu" class="os">
51 <li class="spacer">
fd188212 52 <a href="index.html">GNU/Linux</a>
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53 </li>
54 <li>
55 <a href="mac.html">Mac OS</a>
56 </li>
57 <li>
fd188212 58 <a href="windows.html" class="current">Windows</a>
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59 </li>
60 <li class="spacer">
61 <a href="https://fsf.org/share?u=https://u.fsf.org/zb&amp;t=Email encryption for everyone via %40fsf">
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62 Share&nbsp;
63 <img src="//static.fsf.org/nosvn/enc-dev0/img/gnu-social.png"
64 class="share-logo" alt="[GNU Social]">&nbsp;
65 <img src="//static.fsf.org/nosvn/enc-dev0/img/pump.io.png"
66 class="share-logo" alt="[Pump.io]">&nbsp;
67 <img src="//static.fsf.org/nosvn/enc-dev0/img/reddit-alien.png"
68 class="share-logo" alt="[Reddit]">&nbsp;
69 <img src="//static.fsf.org/nosvn/enc-dev0/img/hacker-news.png"
70 class="share-logo" alt="[Hacker News]">
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71 </a>
72 </li>
73 </ul>
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74
75 <!-- ~~~~~~~~~ FSF Introduction ~~~~~~~~~ -->
76 <div id="fsf-intro">
c1ea5176 77 <h3><a href="http://u.fsf.org/ys"><img alt="Free Software Foundation" src="//static.fsf.org/nosvn/enc-dev0/img/fsf-logo.png" /></a></h3>
d8ced2c3 78 <span style="font-size:125%"><p>We fight for computer users' rights, and promote the development of free (as in freedom) software. Resisting bulk surveillance is very important to us.</p><p><strong>We want to translate this guide into more languages, and make a version for encryption on mobile devices. Please donate, and help people around the world take the first step towards protecting their privacy with free software.</strong></p></span>
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688dfe06 80 <p><a href="https://crm.fsf.org/civicrm/contribute/transact?reset=1&amp;id=14&amp;pk_campaign=email_self_defense&amp;pk_kwd=guide_donate"><img alt="Donate" src="//static.fsf.org/nosvn/enc-dev0/img/en/donate.png"/></a> </p>
0a225228 81
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82 </div><!-- End #fsf-intro -->
83
84 <!-- ~~~~~~~~~ Guide Introduction ~~~~~~~~~ -->
85 <div class="intro">
f99326cd 86 <p>
de0ab142 87 <a id="infographic" href="infographic.html"><img src="//static.fsf.org/nosvn/enc-dev0/img/en/infographic-button.png" alt="View &amp; share our infographic &rarr;" /></a>
66a99343 88 Bulk surveillance violates our fundamental rights and makes free speech risky. This guide will teach you a basic surveillance self-defense skill: email encryption. Once you've finished, you'll be able to send and receive emails that are coded to make sure a surveillance agent or thief intercepting your email can't read it. All you need is a computer with an Internet connection, an email account, and about half an hour.</p>
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89
90<p>Even if you have nothing to hide, using encryption helps protect the privacy of people you communicate with, and makes life difficult for bulk surveillance systems. If you do have something important to hide, you're in good company; these are the same tools that Edward Snowden used to share his famous secrets about the NSA.</p>
91
8015decf 92<p>In addition to using encryption, standing up to surveillance requires fighting politically for a <a href="http://gnu.org/philosophy/surveillance-vs-democracy.html">reduction in the amount of data collected on us</a>, but the essential first step is to protect yourself and make surveillance of your communication as difficult as possible. Let's get started!</p>
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94 </div><!-- End .intro -->
95
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96 </div>
97 </header><!-- End #header -->
98
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99<!-- ~~~~~~~~~ Section 1: Get the pieces ~~~~~~~~~ -->
100 <section class="row" id="section1">
101 <div>
4f3e4963 102 <!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
6c673e6f 103 <div class="section-intro">
6c673e6f 104 <h2><em>#1</em> Get the pieces</h2>
81e841e8 105 <p class="notes">This guide relies on software which is freely licensed; it's completely transparent and anyone can copy it or make their own version. This makes it safer from surveillance than proprietary software (like Windows). To defend your freedom as well as protect yourself from surveillance, we recommend you switch to a free software operating system like GNU/Linux. Learn more about free software at <a href="https://u.fsf.org/ys">fsf.org</a>.</p>
66a99343 106 <p>To get started, you'll need a desktop email program installed on your computer. This guide works with free software versions of the Thunderbird email program, and with Thunderbird itself. Email programs are another way to access the same email accounts you can access in a browser (like Gmail), but provide extra features.</p>
8ab87065 107 <p>If you already have one of these, you can skip to <a href="#step-1b">Step 1.b</a>.</p>
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108 </div><!-- End .section-intro -->
109
110 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
111 <div id="step-1a" class="step">
112 <div class="sidebar">
de0ab142 113 <p><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step1a-install-wizard.png" alt="Step 1.A: Install Wizard" /></p>
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114 </div><!-- /.sidebar -->
115 <div class="main">
66a99343 116 <h3><em>Step 1.a</em> Setup your email program with your email account (if it isn't already)</h3>
6c673e6f 117 <p>Open your email program and follow the wizard that sets it up with your email account.</p>
0a225228 118
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119 <!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
120 <div class="troubleshooting">
121 <h4>Troubleshooting</h4>
122 <dl>
123 <dt>What's a wizard?</dt>
124 <dd>A wizard is a series of windows that pop up to make it easy to get something done on a computer, like installing a program. You click through it, selecting options as you go.</dd>
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125 <dt>My email program can't find my account or isn't downloading my mail</dt>
126 <dd>Before searching the Web, we recommend you start by asking other people who use your email system, to figure out the correct settings.</dd>
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127 <dt class="feedback">Don't see a solution to your problem?</dt>
128 <dd class="feedback">Please let us know on the <a href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback page</a>.</dd>
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129 </dl>
130 </div><!-- /.troubleshooting -->
131
132 </div><!-- End .main -->
133 </div><!-- End #step1-a .step -->
134
256d4473 135<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
6c673e6f 136 <div id="step-1b" class="step">
0a225228 137
256d4473 138 <div class="main">
ea15f40d 139 <h3><em>Step 1.b</em> Get GnuPG by downloading GPG4Win</h3>
0a225228 140 <p>GPG4Win is a software package that includes GnuPG. <a href="http://files.gpg4win.org/gpg4win-2.2.1.exe">Download</a> and install it, choosing default options whenever asked. After it's installed, you can close any windows that it creates.</p>
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141
142 </div><!-- End .main -->
143 </div><!-- End #step1-b .step -->
144
145 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
146 <div id="step-1c" class="step">
bb28ee32 147 <div class="sidebar">
4f3e4963 148 <ul class="images">
242aedb3 149 <li><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step1b-01-tools-addons.png" alt="Step 1.C: Tools -> Add-ons" /></li>
150 <li><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step1b-02-search.png" alt="Step 1.C: Search Add-ons" /></li>
151 <li><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step1b-03-install.png" alt="Step 1.C: Install Add-ons" /></li>
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152 </ul>
153 </div><!-- /.sidebar -->
6c673e6f 154 <div class="main">
256d4473 155 <h3><em>Step 1.c</em> Install the Enigmail plugin for your email program</h3>
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156 <p>In your email program's menu, select Add-ons (it may be in the Tools section). Make sure Extensions is selected on the left. Do you see Enigmail? if so, skip this step.</p>
157 <p>If not, search "Enigmail" with the search bar in the upper right. You can take it from here. Restart your email program when you're done.</p>
158 <!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
159 <div class="troubleshooting">
160 <h4>Troubleshooting</h4>
161 <dl>
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162 <dt>I can't find the menu.</dt>
163 <dd>In many new email programs, the main menu is represented by an image of three stacked horizontal bars.</dd>
164
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165 <dt class="feedback">Don't see a solution to your problem?</dt>
166 <dd class="feedback">Please let us know on the <a href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback page</a>.</dd>
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167 </dl>
168 </div><!-- /.troubleshooting -->
169 </div><!-- End .main -->
256d4473 170 </div><!-- End #step-1c .step -->
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171 </div>
172 </section><!-- End #section1 -->
6b62e8bb 173
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174<!-- ~~~~~~~~~ Section 2: Make your keys ~~~~~~~~~ -->
175 <section class="row" id="section2">
176 <div>
177 <!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
178 <div class="section-intro">
179 <h2><em>#2</em> Make your keys</h2>
bbfaa44d 180 <p>To use the GnuPG system, you'll need a public key and a private key (known together as a keypair). Each is a long string of randomly generated numbers and letters that are unique to you. Your public and private keys are linked together by a special mathematical function.</p>
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181
182<p>Your public key isn't like a physical key, because it's stored in the open in an online directory called a keyserver. People download it and use it, along with GnuPG, to encrypt emails they send to you. You can think of the keyserver as phonebook, where people who want to send you an encrypted email look up your public key.</p>
6b62e8bb 183
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184<p>Your private key is more like a physical key, because you keep it to yourself (on your computer). You use GnuPG and your private key to decode encrypted emails other people send to you.</p>
185 </div><!-- End .section-intro -->
186
187 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
188 <div id="step-2a" class="step">
189 <div class="sidebar">
de0ab142 190 <p><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step2a-01-make-keypair.png" alt="Step 2.A: Make a Keypair" /></p>
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191 </div><!-- /.sidebar -->
192 <div class="main">
193 <h3><em>Step 2.a</em> Make a keypair</h3>
194 <p>In your email program's menu, select OpenPGP &rarr; Setup Wizard. You don't need to read the text in the window that pops up unless you'd like to, but it's good to read the text on the later screens of the wizard.</p>
195 <p>On the second screen, titled "Signing," select "No, I want to create per-recipient rules for emails that need to be signed."</p>
196 <p>Use the default options until you reach the screen titled "Create Key".</p>
197 <p>On the screen titled "Create Key," pick a strong password! Your password should be at least 12 characters and include at least one lower case and upper case letter and at least one number or punctuation symbol. Don't forget the password, or all this work will be wasted!</p>
bb28ee32 198 <p class="notes">The program will take a little while to finish the next step, the "Key Creation" screen. While you wait, do something else with your computer, like watching a movie or browsing the Web. The more you use the computer at this point, the faster the key creation will go.</p>
7b37c2c4 199 <p>When the OpenPGP Confirm screen pops up, select Generate Certificate and choose to save it in a safe place on your computer (we recommend making a folder called "Revocation Certificate" in your home folder and keeping it there). You'll learn more about the revocation certificate in <a href="#section5">Section 5</a>. The setup wizard will ask you to move it onto an external device, but that isn't necessary at this moment.</p>
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201 <!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
202 <div class="troubleshooting">
203 <h4>Troubleshooting</h4>
204 <dl>
205 <dt>I can't find the OpenPGP menu.</dt>
206 <dd>In many new email programs, the main menu is represented by an image of three stacked horizontal bars. OpenPGP may be inside a section called Tools.</dd>
0a225228 207
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208 <dt class="feedback">Don't see a solution to your problem?</dt>
209 <dd class="feedback">Please let us know on the <a href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback page</a>.</dd>
210 </dl>
211 </div><!-- /.troubleshooting -->
212 </div><!-- End .main -->
213 </div><!-- End #step-2a .step -->
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214
215 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
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216 <div id="step-2b" class="step">
217 <div class="main">
218 <h3><em>Step 2.b</em> Upload your public key to a keyserver</h3>
219 <p>In your email program's menu, select OpenPGP &rarr; Key Management.</p>
220<p>Right click on your key and select Upload Public Keys to Keyserver. Use the default keyserver in the popup.</p>
7a3d8912 221<p class="notes">Now someone who wants to send you an encrypted message can download your public key from the Internet. There are multiple keyservers that you can select from the menu when you upload, but they are all copies of each other, so it doesn't matter which one you use. However, it sometimes takes a few hours for them to match each other when a new key is uploaded.</p>
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222 <!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
223 <div class="troubleshooting">
224 <h4>Troubleshooting</h4>
225 <dl>
688dfe06 226 <dt>The progress bar never finishes.</dt>
66a99343 227 <dd>Close the upload popup, make sure you are connected to the Internet, and try again. If that doesn't work, try again, selecting a different keyserver.</dd>
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228<dt>My key doesnt appear in the list</dt>
229 <dd>Try checking Show Default Keys.</dd>
a60a6e36 230
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231 <dt class="feedback">Don't see a solution to your problem?</dt>
232 <dd class="feedback">Please let us know on the <a href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback page</a>.</dd>
bb28ee32 233
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234 </dl>
235 </div><!-- /.troubleshooting -->
236
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238
239 </div><!-- End .main -->
d8b88fc2 240 </div><!-- End #step-2b .step -->
e155c686 241
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242 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
243 <div id="terminology" class="step">
244 <div class="main">
245 <h3>GnuPG, OpenPGP, what?</h3>
246 <p>You're using a program called GnuPG, but the menu in your email program is called OpenPGP. Confusing, right? In general, the terms GnuPG, GPG, GNU Privacy Guard, OpenPGP and PGP are used interchangeably, though they all have slightly different meanings.</p>
247 </div><!-- End .main -->
248 </div><!-- End #terminology.step-->
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249 </div>
250 </section><!-- End #section2 -->
251
252<!-- ~~~~~~~~~ Section 3: Try it out ~~~~~~~~~ -->
253 <section class="row" id="section3">
254 <div>
255 <!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
256 <div class="section-intro">
257 <h2><em>#3</em> Try it out!</h2>
b3d5c595 258 <p>Now you'll try a test correspondence with a computer program named Edward, which knows how to use encryption. Except where noted, these are the same steps you'd follow when corresponding with a real, live person.</p>
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259 </div><!-- End .section-intro -->
260
261 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
262 <div id="step-3a" class="step">
263 <div class="sidebar">
de0ab142 264 <p><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/section3-try-it-out.png" alt="Try it out." /></p>
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265 </div><!-- /.sidebar -->
266 <div class="main">
b3d5c595 267 <h3><em>Step 3.a</em> Send Edward your public key</h3>
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268 <p>This is a special step that you won't have to do when corresponding with real people. In your email program's menu, go to OpenPGP &rarr; Key Management. You should see your key in the list that pops up. Right click on your key and select Send Public Keys by Email. This will create a new draft message, as if you had just hit the Write button.</p>
269
fd188212 270<p>Address the message to edward-en@fsf.org. Put at least one word (whatever you want) in the subject and body of the email, then hit send.</p>
4f3e4963 271
b3d5c595 272<p class="notes">It may take two or three minutes for Edward to respond. In the meantime, you might want to skip ahead and check out the <a href="#section5">Use it Well</a> section of this guide. Once he's responded, head to the next step. From here on, you'll be doing just the same thing as when corresponding with a real person.</p>
4f3e4963 273 </div><!-- End .main -->
d8b88fc2 274 </div><!-- End #step-3a .step -->
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275
276 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
277 <div id="step-3b" class="step">
278 <div class="main">
279 <h3><em>Step 3.b</em> Send a test encrypted email</h3>
b3d5c595 280 <p>Write a new email in your email program, addressed to edward-en@fsf.org. Make the subject "Encryption test" or something similar and write something in the body. Don't send it yet.</p>
941218c0 281 <p>Click the icon of the key in the bottom right of the composition window (it should turn yellow). This tells Enigmail to encrypt the email.</p>
7b37c2c4 282 <p class="notes">Next to the key, you'll notice an icon of a pencil. Clicking this tells Enigmail to add a special, unique signature to your message, generated using your private key. This is a separate feature from encryption, and you don't have to use it for this guide.</p>
b3d5c595 283 <p>Click Send. Enigmail will pop up a window that says "Recipients not valid, not trusted or not found."</p>
4f3e4963 284
357dc69d 285 <p>To encrypt an email to Edward, you need his public key, so now you'll have Enigmail download it from a keyserver. Click Download Missing Keys and use the default in the pop-up that asks you to choose a keyserver. Once it finds keys, check the first one (Key ID starting with C), then select ok. Select ok in the next pop-up.</p>
4f3e4963 286
b3d5c595 287 <p>Now you are back at the "Recipients not valid, not trusted or not found" screen. Select Edward's key from the list and click Ok. If the message doesn't send automatically, you can hit send now.</p>
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288 <!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
289 <div class="troubleshooting">
290 <h4>Troubleshooting</h4>
291 <dl>
b3d5c595 292 <dt>Enigmail can't find Edward's key</dt>
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293 <dd>Close the pop-ups that have appeared since you clicked. Make sure you are connected to the Internet and try again. If that doesn't work, repeat the process, choosing a different keyserver when it asks you to pick one.</dd>
294 <dt class="feedback">Don't see a solution to your problem?</dt>
295 <dd class="feedback">Please let us know on the <a href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback page</a>.</dd>
296 </dl>
297 </div><!-- /.troubleshooting -->
298 </div><!-- End .main -->
299 </div><!-- End #step-3b .step -->
300
301 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
302 <div id="step-headers_unencrypted" class="step">
303 <div class="main">
6e1b0fa2 304 <h3><em>Important:</em> Security tips</h3>
81e841e8 305 <p>Even if you encrypted your email, the subject line is not encrypted, so don't put private information there. The sending and receiving addresses aren't encrypted either, so they could be read by a surveillance system. When you send attachments, Enigmail will give you an option of whether you want to encrypt them.</p>
6e1b0fa2 306<p>It's also good practice to click the key icon in your email composition window <strong>before</strong> you start to write. Otherwise, your email client could save an unencrypted draft on the mail server, potentially exposing it to snooping.</p>
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307 </div><!-- End .main -->
308 </div><!-- End #step-headers_unencrypted .step-->
309
310
311 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
312 <div id="step-3c" class="step">
313 <div class="main">
314 <h3><em>Step 3.c</em> Receive a response</h3>
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315 <p>When Edward receives your email, he will use his private key to decrypt it, then fetch your public key from a keyserver and use it to encrypt a response to you.</p>
316 <p class="notes">Since you encrypted this email with Edward's public key, Edward's private key is required to decrypt it. Edward is the only one with his private key, so no one except him &mdash; not even you &mdash; can decrypt it.</p>
317 <p class="notes">It may take two or three minutes for Edward to respond. In the meantime, you might want to skip ahead and check out the <a href="#section5">Use it Well</a> section of this guide.</p>
318 <p>When you receive Edward's email and open it, Enigmail will automatically detect that it is encrypted with your public key, and then it will use your private key to decrypt it.</p>
319 <p>Notice the bar that Enigmail shows you above the message, with information about the status of Edward's key.</p>
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320 </div><!-- End .main -->
321 </div><!-- End #step-3c .step -->
322
323<!-- STEP 3D IS COMMENTED OUT UNTIL WE FIND A WAY TO VALIDATE SIGNATURES
324 <div id="step-3d" class="step">
325 <div class="main">
326 <h3><em>Step 3.d</em> Send a test signed email to a friend</h3>
327 <p>Write a new email in your email program, addressed to a friend. If you want, tell them about this guide!</p>
328 <p>Before sending the email, click the icon of the pencil in the bottom right of the composition window (it should turn yellow). This tells Enigmail to sign the email with you private key.</p>
329 <p>After you click send, Enigmail will ask you for your password. It will do this any time it needs to use your public key.</p>
330 </div>
331 </div>-->
332 </div>
333 </section><!-- End #section3 -->
334
335
b3d5c595 336
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337<!-- ~~~~~~~~~ Section 4: Learn the Web of Trust ~~~~~~~~~ -->
338 <section class="row" id="section4">
339 <div>
340 <!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
341 <div class="section-intro">
342 <h2><em>#4</em> Learn the Web of Trust</h2>
b0ce405b 343 <p>Email encryption is a powerful technology, but it has a weakness; it requires a way to verify that a person's public key is actually theirs. Otherwise, there would be no way to stop an attacker from making an email address with your friend's name, creating keys to go with it and impersonating your friend. That's why the free software programmers that developed email encryption created keysigning and the Web of Trust.</p>
4f3e4963 344
66a99343 345<p>When you sign someone's key, you are publicly saying that you trust that it does belong to them and not an impostor. People who use your public key can see the number of signatures it has. Once you've used GnuPG for a long time, you may have hundreds of signatures. The Web of Trust is the constellation of all GnuPG users, connected to each other by chains of trust expressed through signatures, forming a giant network. The more signatures a key has, and the more signatures its signers' keys have, the more trustworthy that key is.</p>
4f3e4963 346
2334cfdb 347<p>People's public keys are usually identified by their key fingerprint, which is a string of digits like F357AA1A5B1FA42CFD9FE52A9FF2194CC09A61E8 (for Edward's key). You can see the fingerprint for your public key, and other public keys saved on your computer, by going to OpenPGP &rarr; Key Management in your email program's menu, then right clicking on the key and choosing Key Properties. It's good practice to share your fingerprint wherever you share your email address, so that people can double-check that they have the correct public key when they download yours from a keyserver.</p>
6ce3ff70 348
2334cfdb 349<p class="notes">You may also see public keys referred to by their key ID, which is simply the last 8 digits of the fingerprint, like C09A61E8 for Edward. The key ID is visible directly from the Key Management Window. This key ID is like a person's first name (it is a useful shorthand but may not be unique to a given key), whereas the fingerprint actually identifies the key uniquely without the possibility of confusion. If you only have the key ID, you can still look up the key (as well as its fingerprint), like you did in Step 3, but if multiple options appear, you'll need the fingerprint of the person to whom are trying to communicate to verify which one to use.</p>
6ce3ff70 350
bb28ee32 351
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352 </div><!-- End .section-intro -->
353
354 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
355 <div id="step-4a" class="step">
356 <div class="sidebar">
de0ab142 357 <p><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/section4-web-of-trust.png" alt="Section 4: Web of Trust" /></p>
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358 </div><!-- /.sidebar -->
359 <div class="main">
360 <h3><em>Step 4.a</em> Sign a key</h3>
361 <p>In your email program's menu, go to OpenPGP &rarr; Key Management.</p>
b3d5c595 362 <p>Right click on Edward's public key and select Sign Key from the context menu.</p>
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363 <p>In the window that pops up, select "I will not answer" and click ok.</p>
364 <p>In your email program's menu, go to OpenPGP &rarr; Key Management &rarr; Keyserver &rarr; Upload Public Keys and hit ok.</p>
b3d5c595 365 <p class="notes">You've just effectively said "I trust that Edward's public key actually belongs to Edward." This doesn't mean much because Edward isn't a real person, but it's good practice.</p>
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366
367
bb28ee32 368 <!--<div id="pgp-pathfinder">
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369 <form enctype="application/x-www-form-urlencoded" action="/mk_path.cgi" method="get">
370 <p><strong>From:</strong> <input type="text" placeholder="xD41A008" name="FROM"></p>
371 <p><strong>To:</strong> <input type="text" placeholder="50BD01x4" name="TO"></p>
372 <p class="buttons"><input type="submit" value="trust paths" name="PATHS"> <input type="reset" value="reset" name=".reset"></p>
373 </form>
374 </div><!-- End #pgp-pathfinder -->
375
376 </div><!-- End .main -->
377 </div><!-- End #step-4a .step -->
e155c686 378
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379 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
380 <div id="step-sign_real_keys" class="step">
381 <div class="main">
382 <h3><em>Important:</em> check people's identification before signing their keys</h3>
19d4fe06 383 <p>Before signing a real person's key, always make sure it actually belongs to them, and that they are who they say they are. Ask them to show you their ID (unless you trust them very highly) and their public key fingerprint -- not just the shorter public key ID, which could refer to another key as well. In Enigmail, answer honestly in the window that pops up and asks "How carefully have you verified that the key you are about to sign actually belongs to the person(s) named above?".</p>
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384 </div><!-- End .main -->
385 </div><!-- End #step-sign_real_keys .step-->
386
387
388
389 </div>
390 </section><!-- End #section4 -->
391
392<!-- ~~~~~~~~~ Section 5: Use it well ~~~~~~~~~ -->
393 <section id="section5" class="row">
394 <div>
395 <!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
396 <div class="section-intro">
397 <h2><em>#5</em> Use it well</h2>
398<p>Everyone uses GnuPG a little differently, but it's important to follow some basic practices to keep your email secure. Not following them, you risk the privacy of the people you communicate with, as well as your own, and damage the Web of Trust.</p>
399 </div><!-- End .section-intro -->
400
401 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
402 <div id="step-5a" class="step">
403 <div class="sidebar">
de0ab142 404 <p><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/section5-01-use-it-well.png" alt="Section 5: Use it Well" /></p>
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405 </div><!-- /.sidebar -->
406 <div class="main">
407 <h3>When should I encrypt?</h3>
408
66a99343 409 <p>The more you can encrypt your messages, the better. If you only encrypt emails occasionally, each encrypted message could raise a red flag for surveillance systems. If all or most of your email is encrypted, people doing surveillance won't know where to start.</p>
4f3e4963 410
bb28ee32 411<p>That's not to say that only encrypting some of your email isn't helpful -- it's a great start and it makes bulk surveillance more difficult.</p>
0a225228 412
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413 </div><!-- End .main -->
414 </div><!-- End #step-5a .step -->
415
416 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
417 <div id="step-5b" class="step">
418 <div class="sidebar">
de0ab142 419 <p><img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/section5-02-use-it-well.png" alt="Section 5: Use it Well" /></p>
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420 </div><!-- /.sidebar -->
421 <div class="main">
bb28ee32 422 <h3><em>Important:</em> Be wary of invalid keys</h3>
40e65992 423 <p>GnuPG makes email safer, but it's still important to watch out for invalid keys, which might have fallen into the wrong hands. Email encrypted with invalid keys might be readable by surveillance programs.</p>
b3d5c595 424 <p>In your email program, go back to the second email that Edward sent you. Because Edward encrypted it with your public key, it will have a message from OpenPGP at the top, which most likely says "OpenPGP: Part of this message encrypted."</p>
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425<p><b>When using GnuPG, make a habit of glancing at that bar. The program will warn you there if you get an email encrypted with a key that can't be trusted.</b></p>
426 </div><!-- End .main -->
427 </div><!-- End #step-5b .step -->
428
429 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
430 <div id="step-5c" class="step">
431 <div class="main">
432 <h3>Copy your revocation certificate to somewhere safe</h3>
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433 <p>Remember when you created your keys and saved the revocation certificate that GnuPG made? It's time to copy that certificate onto the safest digital storage that you have -- the ideal thing is a flash drive, disk, or hard drive stored in a safe place in your home.</p>
434<p>If your private key ever gets lost or stolen, you'll need this certificate file to let people know that you are no longer using that keypair.</p>
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435 </div><!-- End .main -->
436 </div><!-- End #step-5c .step -->
437
438 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
439 <div id="step-lost_key" class="step">
440 <div class="main">
441 <h3><em>Important:</em> act swiftly if someone gets your private key</h3>
bb28ee32 442 <p>If you lose your private key or someone else gets ahold of it (say, by stealing or cracking your computer), it's important to revoke it immediately before someone else uses it to read your encrypted email. This guide doesn't cover how to revoke a key, but you can follow the <a href="https://www.gnupg.org/gph/en/manual.html#AEN305">instructions on the GnuPG site</a>. After you're done revoking, send an email to everyone with whom you usually use your key to make sure they know.</p>
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443 </div><!-- End .main -->
444 </div><!-- End #step-lost_key .step-->
445
0a225228 446 <!-- ~~~~~~~~~ a div for each step ~~~~~~~~~
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447 <div id="step-5d" class="step">
448 <div class="main">
b0ce405b 449 <h3>Make your public key part of your online identity</h3>
be23bf7b 450 <p> First add your public key fingerprint to your email signature, then compose an email to at least five of your friends, telling them you just set up GnuPG and mentioning your public key fingerprint. Link to this guide and ask them to join you. Don't forget that there's also an awesome <a href="infographic.html">infographic to share.</a></p>
b0ce405b 451
be23bf7b 452<p class="notes">Start writing your public key fingerprint anywhere someone would see your email address: your social media profiles, blog, Website, or business card. (At the Free Software Foundation, we put ours on our <a href="https://fsf.org/about/staff">staff page</a>.) We need to get our culture to the point that we feel like something is missing when we see an email address without a public key fingerprint.</p>
0a225228 453 </div><!-- End .main
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454 </div><!-- End #step-5d .step-->
455
456
457 </div>
458 </section><!-- End #section5 -->
459
460<!-- ~~~~~~~~~ Section 6: Next steps ~~~~~~~~~ -->
461 <section class="row" id="section6">
132dc8fb 462 <div id="step-click_here" class="step">
bb28ee32 463 <div class="main">
29d8c378 464 <h2><a href="next_steps.html">Great job! Check out the next steps.</a></h2>
0a225228 465
bb28ee32 466 </div><!-- End .main -->
132dc8fb 467 </div><!-- End #step-click_here .step-->
bb28ee32 468
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469 </section><!-- End #section6 -->
470
471<!-- ~~~~~~~~~ FAQ ~~~~~~~~~ -->
472<!-- When un-commenting this section go to main.css and search
473 for /* Guide Sections Background */ then add #faq to the desired color
0a225228 474
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475 <section class="row" id="faq">
476 <div>
477 <div class="sidebar">
478 <h2>FAQ</h2>
479 </div>
480
481 <div class="main">
482 <dl>
483 <dt>My key expired</dt>
484 <dd>Answer coming soon.</dd>
485
486 <dt>Who can read encrypted messages? Who can read signed ones?</dt>
487 <dd>Answer coming soon.</dd>
488
489 <dt>My email program is opening at times I don't want it to open/is now my default program and I don't want it to be.</dt>
490 <dd>Answer coming soon.</dd>
491 </dl>
492 </div>
493 </div>
494 </section> --><!-- End #faq -->
495
496<!-- ~~~~~~~~~ Footer ~~~~~~~~~ -->
497 <footer class="row" id="footer">
498 <div>
499 <div id="copyright">
c1ea5176 500 <h4><a href="https://u.fsf.org/ys"><img alt="Free Software Foundation" src="//static.fsf.org/nosvn/enc-dev0/img/fsf-logo.png"/></a></h4>
4f3e4963 501 <p>Copyright &copy; 2014 <a href="https://u.fsf.org/ys">Free Software Foundation</a>, Inc. <a href="https://my.fsf.org/donate/privacypolicy.html">Privacy Policy</a>. <a href="https://u.fsf.org/yr">Join.</a></p>
d8ced2c3 502 <p><em>Version 2.1. <a href="http://agpl.fsf.org/emailselfdefense.fsf.org/edward/CURRENT/edward.tar.gz">Source code of Edward reply bot by Josh Drake &lt;zamnedix@gnu.org&gt; available under the GNU General Public License.</a></em></p>
d1553a11 503<p>The images on this page are under a <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 license (or later version)</a>, and the rest of it is under a <a href="https://creativecommons.org/licenses/by-sa/4.0">Creative Commons Attribution-ShareAlike 4.0 license (or later version)</a>. &mdash; <a href="http://www.gnu.org/licenses/license-list.html#OtherLicenses">Why these licenses?</a></p>
7b37c2c4 504 <p>Download the source package for <a href="emailselfdefense_source.zip">this guide</a>. Fonts used in the guide &amp; infographic: <a href="https://www.google.com/fonts/specimen/Dosis">Dosis</a> by Pablo Impallari, <a href="http://www.google.com/fonts/specimen/Signika">Signika</a> by Anna Giedry&#347;, <a href="http://www.google.com/fonts/specimen/Archivo+Narrow">Archivo Narrow</a> by Omnibus-Type, <a href="http://www.thegopherarchive.com/gopher-files-hacks-pxl2000-119351.htm">PXL-2000</a> by Florian Cramer.</p>
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505 <p>
506 <a href="//weblabels.fsf.org/emailselfdefense.fsf.org/"
507 rel="jslicense">
508 JavaScript license information
509 </a>
510 </p>
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511 </div><!-- /#copyright -->
512 <p class="credits">
513 Infographic and guide design by <a rel="external" href="http://jplusplus.org"><strong>Journalism++</strong> <img src="//static.fsf.org/nosvn/enc-dev0/img/jplusplus.png" alt="Journalism++" /></a>
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552 (function() {
553 var u=(("https:" == document.location.protocol) ? "https" : "http") + "://piwik.fsf.org/";
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