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13&lt;!DOCTYPE html&gt;
14&lt;html&gt;
15&lt;head&gt;
16&lt;meta charset="utf-8" /&gt;
17
18&lt;title&gt;Email Self-Defense - a guide to fighting surveillance with GnuPG encryption&lt;/title&gt;
19
20&lt;meta name="keywords" content="GnuPG, GPG, openpgp, surveillance, privacy, email, Enigmail" /&gt;
21&lt;meta name="description" content="Email surveillance violates our fundamental rights and makes
22free speech risky. This guide will teach you email self-defense in 30 minutes with GnuPG." /&gt;
23&lt;meta name="viewport" content="width=device-width, initial-scale=1" /&gt;
24&lt;link rel="stylesheet" href="//static.fsf.org/nosvn/enc-dev0/css/main.css" /&gt;
25&lt;link rel="shortcut icon" href="//static.fsf.org/nosvn/enc-dev0/img/favicon.ico" /&gt;
26&lt;/head&gt;
27
28&lt;body&gt;
29
30&lt;!-- ~~~~~~~~~ GnuPG Header and introduction text ~~~~~~~~~ --&gt;
31&lt;header class="row" id="header"&gt;&lt;div&gt;
32
33&lt;h1&gt;Email Self-Defense&lt;/h1&gt;
34
35&lt;!-- Language list for browsers that do not have JS enabled --&gt;
36&lt;ul id="languages" class="os"&gt;
37&lt;li&gt;&lt;a class="current" href="/en"&gt;english&lt;/a&gt;&lt;/li&gt;
38&lt;li&gt;&lt;a href="/es"&gt;español&lt;/a&gt;&lt;/li&gt;
39&lt;li&gt;&lt;a href="/fr"&gt;français&lt;/a&gt;&lt;/li&gt;
40&lt;li&gt;&lt;a href="/de"&gt;deutsch&lt;/a&gt;&lt;/li&gt;
41&lt;li&gt;&lt;a href="/it"&gt;italiano&lt;/a&gt;&lt;/li&gt;
42&lt;li&gt;&lt;a href="/pt-br"&gt;português do Brasil&lt;/a&gt;&lt;/li&gt;
43&lt;li&gt;&lt;a href="/tr"&gt;türkçe&lt;/a&gt;&lt;/li&gt;
44&lt;li&gt;&lt;a href="/ro"&gt;română&lt;/a&gt;&lt;/li&gt;
45&lt;li&gt;&lt;a href="/ru"&gt;русский&lt;/a&gt;&lt;/li&gt;
46&lt;!--&lt;li&gt;&lt;a href="/ml"&gt;മലയാളം&lt;/a&gt;&lt;/li&gt;--&gt;
47&lt;!--&lt;li&gt;&lt;a href="/ko"&gt;한국어&lt;/a&gt;&lt;/li&gt;--&gt;
48&lt;li&gt;&lt;a href="/ja"&gt;日本語&lt;/a&gt;&lt;/li&gt;
49&lt;li&gt;&lt;a href="/el"&gt;ελληνικά&lt;/a&gt;&lt;/li&gt;
50&lt;!--&lt;li&gt;&lt;a href="/ar"&gt;العربية&lt;/a&gt;&lt;/li&gt;--&gt;
51&lt;/ul&gt;
52
53&lt;ul id="menu" class="os"&gt;
54&lt;li class="spacer"&gt; &lt;a href="index.html" class="current"&gt;GNU/Linux&lt;/a&gt; &lt;/li&gt;
55&lt;li&gt; &lt;a href="mac.html"&gt;Mac OS&lt;/a&gt; &lt;/li&gt;
56&lt;li&gt; &lt;a href="windows.html"&gt;Windows&lt;/a&gt; &lt;/li&gt;
57&lt;li class="spacer"&gt; &lt;a href="https://fsf.org/share?u=https://u.fsf.org/zb&amp;t=Email
58encryption for everyone via %40fsf"&gt; Share&nbsp; &lt;img
59src="//static.fsf.org/nosvn/enc-dev0/img/gnu-social.png" class="share-logo"
60alt="[GNU Social]"&gt;&nbsp; &lt;img src="//static.fsf.org/nosvn/enc-dev0/img/pump.io.png"
61class="share-logo"
62alt="[Pump.io]"&gt;&nbsp; &lt;img src="//static.fsf.org/nosvn/enc-dev0/img/reddit-alien.png"
63class="share-logo"
64alt="[Reddit]"&gt;&nbsp; &lt;img src="//static.fsf.org/nosvn/enc-dev0/img/hacker-news.png"
65class="share-logo"
66alt="[Hacker News]"&gt;
67&lt;/a&gt; &lt;/li&gt;
68&lt;/ul&gt;
69
70&lt;!-- ~~~~~~~~~ FSF Introduction ~~~~~~~~~ --&gt;
71&lt;div id="fsf-intro"&gt;
72
73&lt;h3&gt; &lt;a href="http://u.fsf.org/ys"&gt; &lt;img
74alt="Free Software Foundation" src="//static.fsf.org/nosvn/enc-dev0/img/fsf-logo.png" /&gt;
75&lt;/a&gt; &lt;/h3&gt;
76
77&lt;div class="fsf-emphasis"&gt;
78
79&lt;p&gt; We fight for computer users' rights, and promote the development of free (as in freedom)
80software. Resisting bulk surveillance is very important to us. &lt;/p&gt;
81
82&lt;p&gt; &lt;strong&gt; We want to translate this guide into more languages, and make a version for
83encryption on mobile devices. Please donate, and help people around the world take the
84first step towards protecting their privacy with free software. &lt;/strong&gt; &lt;/p&gt;
85
86&lt;/div&gt;
87
88&lt;p&gt;&lt;a
89href="https://crm.fsf.org/civicrm/contribute/transact?reset=1&amp;id=14&amp;pk_campaign=email_self_defense&amp;pk_kwd=guide_donate"&gt;&lt;img
90alt="Donate" src="//static.fsf.org/nosvn/enc-dev0/img/en/donate.png" /&gt;&lt;/a&gt; &lt;/p&gt;
91
92&lt;/div&gt;&lt;!-- End #fsf-intro --&gt;
93
94&lt;!-- ~~~~~~~~~ Guide Introduction ~~~~~~~~~ --&gt;
95&lt;div class="intro"&gt;
96
97&lt;p&gt; &lt;a id="infographic" href="infographic.html"&gt;&lt;img
98src="//static.fsf.org/nosvn/enc-dev0/img/en/infographic-button.png"
99alt="View &amp; share our infographic &rarr;" /&gt;&lt;/a&gt; Bulk surveillance violates
100our fundamental rights and makes free speech risky. This guide will teach you a basic
101surveillance self-defense skill: email encryption. Once you've finished, you'll be able to
102send and receive emails that are coded to make sure a surveillance agent or thief intercepting
103your email can't read it. All you need is a computer with an Internet connection, an email
104account, and about half an hour.&lt;/p&gt;
105
106&lt;p&gt;Even if you have nothing to hide, using encryption helps protect the privacy of people
107you communicate with, and makes life difficult for bulk surveillance systems. If you do
108have something important to hide, you're in good company; these are the same tools that
109Edward Snowden used to share his famous secrets about the NSA.&lt;/p&gt;
110
111&lt;p&gt;In addition to using encryption, standing up to surveillance requires fighting politically
112for a &lt;a href="http://gnu.org/philosophy/surveillance-vs-democracy.html"&gt;reduction in the
113amount of data collected on us&lt;/a&gt;, but the essential first step is to protect yourself
114and make surveillance of your communication as difficult as possible. Let's get started!&lt;/p&gt;
115
116&lt;/div&gt;&lt;!-- End .intro --&gt;
117&lt;/div&gt;&lt;/header&gt;&lt;!-- End #header --&gt;
118
119&lt;!-- ~~~~~~~~~ Section 1: Get the pieces ~~~~~~~~~ --&gt;
120&lt;section class="row" id="section1"&gt;&lt;div&gt;
121
122&lt;!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ --&gt;
123&lt;div class="section-intro"&gt;
124
125&lt;h2&gt;&lt;em&gt;#1&lt;/em&gt; Get the pieces&lt;/h2&gt;
126
127&lt;p class="notes"&gt;This guide relies on software which is freely licensed; it's completely
128transparent and anyone can copy it or make their own version. This makes it safer from
129surveillance than proprietary software (like Windows). Learn more about free software at
130&lt;a href="https://u.fsf.org/ys"&gt;fsf.org&lt;/a&gt;.&lt;/p&gt;
131
132&lt;p&gt;Most GNU/Linux operating systems come with GnuPG installed on them, so you don't have
133to download it. Before configuring GnuPG though, you'll need a desktop email program
134installed on your computer. Most GNU/Linux distributions have a free software version of
135the Thunderbird email program available to install. This guide will work with them, in
136addition to Thunderbird itself. Email programs are another way to access the same email
137accounts you can access in a browser (like Gmail), but provide extra features.&lt;/p&gt;
138
139&lt;p&gt;If you already have <span class="removed"><del><strong>one of these,</strong></del></span> <span class="inserted"><ins><em>an email program,</em></ins></span> you can skip to &lt;a href="#step-1b"&gt;Step 1.b&lt;/a&gt;.&lt;/p&gt;
140
141&lt;/div&gt;&lt;!-- End .section-intro --&gt;
142
143&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
144&lt;div id="step-1a" class="step"&gt;
145&lt;div class="sidebar"&gt;
146
147&lt;p&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step1a-install-wizard.png"
148alt="Step 1.A: Install Wizard" /&gt;&lt;/p&gt;
149
150&lt;/div&gt;&lt;!-- /.sidebar --&gt;
151&lt;div class="main"&gt;
152
153&lt;h3&gt;&lt;em&gt;Step 1.a&lt;/em&gt; Setup your email program with your email <span class="removed"><del><strong>account (if it isn't
154already)&lt;/h3&gt;</strong></del></span> <span class="inserted"><ins><em>account&lt;/h3&gt;</em></ins></span>
155
156&lt;p&gt;Open your email program and follow the wizard <span class="inserted"><ins><em>(step-by-step walkthrough)</em></ins></span> that sets it
157up with your email account.&lt;/p&gt;
158
159&lt;!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ --&gt;
160&lt;div class="troubleshooting"&gt;
161
162&lt;h4&gt;Troubleshooting&lt;/h4&gt;
163
164&lt;dl&gt;
165<span class="removed"><del><strong>&lt;dt&gt;What's a wizard?&lt;/dt&gt;
166
167&lt;dd&gt;A</strong></del></span>
168<span class="inserted"><ins><em>&lt;dt&gt;The</em></ins></span> wizard <span class="inserted"><ins><em>doesn't launch&lt;/dt&gt;
169
170&lt;dd&gt;You can launch the wizard yourself, but the menu option for doing so</em></ins></span> is <span class="removed"><del><strong>a series of windows that pop up</strong></del></span> <span class="inserted"><ins><em>named differently
171in each email programs. The button</em></ins></span> to <span class="removed"><del><strong>make</strong></del></span> <span class="inserted"><ins><em>launch</em></ins></span> it <span class="removed"><del><strong>easy to get</strong></del></span> <span class="inserted"><ins><em>will be in the program's main menu, under
172"New" or something similar, titled</em></ins></span> something <span class="removed"><del><strong>done on
173a computer,</strong></del></span> like <span class="removed"><del><strong>installing a program. You click through it, selecting options as you go.&lt;/dd&gt;
174
175&lt;dt&gt;My</strong></del></span> <span class="inserted"><ins><em>"Add account" or "New/Existing</em></ins></span> email <span class="removed"><del><strong>program</strong></del></span>
176<span class="inserted"><ins><em>account."&lt;/dd&gt;
177
178&lt;dt&gt;The wizard</em></ins></span> can't find my account or isn't downloading my mail&lt;/dt&gt;
179
180&lt;dd&gt;Before searching the Web, we recommend you start by asking other people who use your
181email system, to figure out the correct settings.&lt;/dd&gt;
182
183&lt;dt class="feedback"&gt;Don't see a solution to your problem?&lt;/dt&gt;
184
185&lt;dd class="feedback"&gt;Please let us know on the &lt;a
186href="https://libreplanet.org/wiki/GPG_guide/Public_Review"&gt;feedback page&lt;/a&gt;.&lt;/dd&gt;
187&lt;/dl&gt;
188
189&lt;/div&gt;&lt;!-- /.troubleshooting --&gt;
190&lt;/div&gt;&lt;!-- End .main --&gt;
191&lt;/div&gt;&lt;!-- End #step1-a .step --&gt;
192
193&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
194&lt;div id="step-1b" class="step"&gt;
195&lt;div class="sidebar"&gt;
196&lt;ul class="images"&gt;
197&lt;li&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step1b-01-tools-addons.png"
198alt="Step 1.B: Tools -&gt; Add-ons" /&gt;&lt;/li&gt;
199&lt;li&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step1b-02-search.png"
200alt="Step 1.B: Search Add-ons" /&gt;&lt;/li&gt;
201&lt;li&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step1b-03-install.png"
202alt="Step 1.B: Install Add-ons" /&gt;&lt;/li&gt;
203&lt;/ul&gt;
204
205&lt;/div&gt;&lt;!-- /.sidebar --&gt;
206&lt;div class="main"&gt;
207
208&lt;h3&gt;&lt;em&gt;Step 1.b&lt;/em&gt; Install the Enigmail plugin for your email program&lt;/h3&gt;
209
210&lt;p&gt;In your email program's menu, select Add-ons (it may be in the Tools section). Make
211sure Extensions is selected on the left. Do you see Enigmail? <span class="removed"><del><strong>if</strong></del></span> <span class="inserted"><ins><em>If</em></ins></span> so, skip this step.&lt;/p&gt;
212
213&lt;p&gt;If not, search "Enigmail" with the search bar in the upper right. You can take it from
214here. Restart your email program when you're done.&lt;/p&gt;
215
216&lt;!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ --&gt;
217&lt;div class="troubleshooting"&gt;
218
219&lt;h4&gt;Troubleshooting&lt;/h4&gt;
220
221&lt;dl&gt;
222&lt;dt&gt;I can't find the menu.&lt;/dt&gt;
223
224&lt;dd&gt;In many new email programs, the main menu is represented by an image of three stacked
225horizontal bars.&lt;/dd&gt;
226
227&lt;dt class="feedback"&gt;Don't see a solution to your problem?&lt;/dt&gt;
228
229&lt;dd class="feedback"&gt;Please let us know on the &lt;a
230href="https://libreplanet.org/wiki/GPG_guide/Public_Review"&gt;feedback page&lt;/a&gt;.&lt;/dd&gt;
231&lt;/dl&gt;
232
233&lt;/div&gt;&lt;!-- /.troubleshooting --&gt;
234&lt;/div&gt;&lt;!-- End .main --&gt;
235&lt;/div&gt;&lt;!-- End #step-1b .step --&gt;
236&lt;/div&gt;&lt;/section&gt;&lt;!-- End #section1 --&gt;
237
238&lt;!-- ~~~~~~~~~ Section 2: Make your keys ~~~~~~~~~ --&gt;
239&lt;section class="row" id="section2"&gt;&lt;div&gt;
240
241&lt;!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ --&gt;
242&lt;div class="section-intro"&gt;
243
244&lt;h2&gt;&lt;em&gt;#2&lt;/em&gt; Make your keys&lt;/h2&gt;
245
246&lt;p&gt;To use the GnuPG system, you'll need a public key and a private key (known together as a
247keypair). Each is a long string of randomly generated numbers and letters that are unique to
248you. Your public and private keys are linked together by a special mathematical function.&lt;/p&gt;
249
250&lt;p&gt;Your public key isn't like a physical key, because it's stored in the open in an online
251directory called a keyserver. People download it and use it, along with GnuPG, to encrypt
252emails they send to you. You can think of the keyserver as phonebook, where people who
253want to send you an encrypted email look up your public key.&lt;/p&gt;
254
255&lt;p&gt;Your private key is more like a physical key, because you keep it to yourself (on your
256computer). You use GnuPG and your private key to decode encrypted emails other people send
257to you.&lt;/p&gt;
258
259&lt;/div&gt;&lt;!-- End .section-intro --&gt;
260
261&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
262&lt;div id="step-2a" class="step"&gt;
263&lt;div class="sidebar"&gt;
264
265&lt;p&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/step2a-01-make-keypair.png"
266alt="Step 2.A: Make a Keypair" /&gt;&lt;/p&gt;
267
268&lt;/div&gt;&lt;!-- /.sidebar --&gt;
269&lt;div class="main"&gt;
270
271&lt;h3&gt;&lt;em&gt;Step 2.a&lt;/em&gt; Make a keypair&lt;/h3&gt;
272
273<span class="removed"><del><strong>&lt;p&gt;In your email program's menu,</strong></del></span>
274
275<span class="inserted"><ins><em>&lt;p&gt;The Enigmail Setup wizard may start automatically. If it doesn't,</em></ins></span> select <span class="removed"><del><strong>OpenPGP</strong></del></span> <span class="inserted"><ins><em>Enigmail</em></ins></span> &rarr;
276Setup <span class="removed"><del><strong>Wizard.</strong></del></span> <span class="inserted"><ins><em>Wizard from your email program's menu.</em></ins></span> You don't need to read the text in the window
277that pops up unless you'd like to, but it's good to read the text on the later screens of
278the <span class="removed"><del><strong>wizard.&lt;/p&gt;
279
280&lt;p&gt;On</strong></del></span> <span class="inserted"><ins><em>wizard. Click Next with the default options selected, except in these instances:&lt;/p&gt;
281
282&lt;ul&gt;
283&lt;li&gt;On</em></ins></span> the second screen, titled <span class="inserted"><ins><em>"Encryption," select "Encrypt all of my messages by default,
284because privacy is critical to me."&lt;/li&gt;
285&lt;li&gt;On the third screen, titled</em></ins></span> "Signing," select <span class="removed"><del><strong>"No, I</strong></del></span> <span class="inserted"><ins><em>"Don't sign my messages by default."&lt;/li&gt;
286&lt;li&gt;On the fourth screen, titled "Key Selection," select "I</em></ins></span> want to create <span class="removed"><del><strong>per-recipient
287rules</strong></del></span> <span class="inserted"><ins><em>a new key pair</em></ins></span>
288for <span class="removed"><del><strong>emails that need to be signed."&lt;/p&gt;
289
290&lt;p&gt;Use the default options until you reach the screen titled "Create Key".&lt;/p&gt;
291
292&lt;p&gt;On</strong></del></span> <span class="inserted"><ins><em>signing and encryption my email."&lt;/li&gt;
293&lt;li&gt;On</em></ins></span> the screen titled "Create Key," pick a strong password! Your password should be at
294least 12 characters and include at least one lower case and upper case letter and at least one
295number or punctuation symbol. Don't forget the password, or all this work will be <span class="removed"><del><strong>wasted!&lt;/p&gt;</strong></del></span> <span class="inserted"><ins><em>wasted!&lt;/li&gt;
296&lt;/ul&gt;</em></ins></span>
297
298&lt;p class="notes"&gt;The program will take a little while to finish the next step, the "Key
299Creation" screen. While you wait, do something else with your computer, like watching a
300movie or browsing the Web. The more you use the computer at this point, the faster the
301key creation will go.&lt;/p&gt;
302
303&lt;p&gt;When the <span class="removed"><del><strong>OpenPGP Confirm</strong></del></span> <span class="inserted"><ins><em>"Key Generation Completed"</em></ins></span> screen pops up, select Generate Certificate and
304choose to save it in a safe place on your computer (we recommend making a folder called
305"Revocation Certificate" in your home folder and keeping it there). You'll learn more
306about the revocation certificate in &lt;a href="#section5"&gt;Section <span class="removed"><del><strong>5&lt;/a&gt;. The setup wizard will ask
307you to move it onto an external device, but that isn't necessary at this moment.&lt;/p&gt;</strong></del></span> <span class="inserted"><ins><em>5&lt;/a&gt;.&lt;/p&gt;</em></ins></span>
308
309&lt;!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ --&gt;
310&lt;div class="troubleshooting"&gt;
311
312&lt;h4&gt;Troubleshooting&lt;/h4&gt;
313
314&lt;dl&gt;
315&lt;dt&gt;I can't find the <span class="removed"><del><strong>OpenPGP</strong></del></span> <span class="inserted"><ins><em>Enigmail</em></ins></span> menu.&lt;/dt&gt;
316
317&lt;dd&gt;In many new email programs, the main menu is represented by an image of three stacked
318horizontal bars. <span class="removed"><del><strong>OpenPGP</strong></del></span> <span class="inserted"><ins><em>Enigmail</em></ins></span> may be inside a section called Tools.&lt;/dd&gt;
319
320&lt;dt&gt;The wizard says that it cannot find GnuPG.&lt;/dt&gt;
321
322&lt;dd&gt;Open whatever program you usually use for installing software, and search for GnuPG,
323then install it. Then restart the Enigmail setup wizard by going to <span class="removed"><del><strong>OpenPGP</strong></del></span> <span class="inserted"><ins><em>Enigmail</em></ins></span> &rarr;
324Setup Wizard.&lt;/dd&gt;
325
326&lt;dt class="feedback"&gt;Don't see a solution to your problem?&lt;/dt&gt;
327
328&lt;dd class="feedback"&gt;Please let us know on the &lt;a
329href="https://libreplanet.org/wiki/GPG_guide/Public_Review"&gt;feedback page&lt;/a&gt;.&lt;/dd&gt;
330&lt;/dl&gt;
331
332&lt;/div&gt;&lt;!-- /.troubleshooting --&gt;
333&lt;/div&gt;&lt;!-- End .main --&gt;
334&lt;/div&gt;&lt;!-- End #step-2a .step --&gt;
335
336&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
337&lt;div id="step-2b" class="step"&gt;
338&lt;div class="main"&gt;
339
340&lt;h3&gt;&lt;em&gt;Step 2.b&lt;/em&gt; Upload your public key to a keyserver&lt;/h3&gt;
341
342&lt;p&gt;In your email program's menu, select <span class="removed"><del><strong>OpenPGP</strong></del></span> <span class="inserted"><ins><em>Enigmail</em></ins></span> &rarr; Key Management.&lt;/p&gt;
343
344&lt;p&gt;Right click on your key and select Upload Public Keys to Keyserver. Use the default
345keyserver in the popup.&lt;/p&gt;
346
347&lt;p class="notes"&gt;Now someone who wants to send you an encrypted message can download your
348public key from the Internet. There are multiple keyservers that you can select from the
349menu when you upload, but they are all copies of each other, so it doesn't matter which
350one you use. However, it sometimes takes a few hours for them to match each other when a
351new key is uploaded.&lt;/p&gt;
352
353&lt;!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ --&gt;
354&lt;div class="troubleshooting"&gt;
355
356&lt;h4&gt;Troubleshooting&lt;/h4&gt;
357
358&lt;dl&gt;
359&lt;dt&gt;The progress bar never finishes.&lt;/dt&gt;
360
361&lt;dd&gt;Close the upload popup, make sure you are connected to the Internet, and try again. If
362that doesn't work, try again, selecting a different keyserver.&lt;/dd&gt;
363
364&lt;dt&gt;My key doesnt appear in the list&lt;/dt&gt;
365
366&lt;dd&gt;Try checking <span class="removed"><del><strong>Show Default Keys.&lt;/dd&gt;</strong></del></span> <span class="inserted"><ins><em>"Display All Keys by Default."&lt;/dd&gt;</em></ins></span>
367
368&lt;dt class="feedback"&gt;Don't see a solution to your problem?&lt;/dt&gt;
369
370&lt;dd class="feedback"&gt;Please let us know on the &lt;a
371href="https://libreplanet.org/wiki/GPG_guide/Public_Review"&gt;feedback page&lt;/a&gt;.&lt;/dd&gt;
372&lt;/dl&gt;
373
374&lt;/div&gt;&lt;!-- /.troubleshooting --&gt;
375&lt;/div&gt;&lt;!-- End .main --&gt;
376&lt;/div&gt;&lt;!-- End #step-2b .step --&gt;
377
378&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
379&lt;div id="terminology" class="step"&gt;
380&lt;div class="main"&gt;
381
382&lt;h3&gt;GnuPG, OpenPGP, what?&lt;/h3&gt;
383
384<span class="removed"><del><strong>&lt;p&gt;You're using a program called GnuPG, but the menu in your email program is called
385OpenPGP. Confusing, right? In</strong></del></span>
386
387<span class="inserted"><ins><em>&lt;p&gt;In</em></ins></span> general, the terms GnuPG, GPG, GNU Privacy Guard, OpenPGP and PGP are used <span class="removed"><del><strong>interchangeably, though they all have slightly different meanings.&lt;/p&gt;</strong></del></span>
388<span class="inserted"><ins><em>interchangeably. Technically, OpenPGP (Pretty Good Privacy) is the encryption standard,
389and GNU Privacy Guard (often shortened to GPG or GnuPG) is the program that implements the
390standard. Enigmail is a plug-in program for your email program that provides an interface
391for GnuPG.&lt;/p&gt;</em></ins></span>
392
393&lt;/div&gt;&lt;!-- End .main --&gt;
394&lt;/div&gt;&lt;!-- End #terminology.step--&gt;
395&lt;/div&gt;&lt;/section&gt;&lt;!-- End #section2 --&gt;
396
397&lt;!-- ~~~~~~~~~ Section 3: Try it out ~~~~~~~~~ --&gt;
398&lt;section class="row" id="section3"&gt;&lt;div&gt;
399
400&lt;!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ --&gt;
401&lt;div class="section-intro"&gt;
402
403&lt;h2&gt;&lt;em&gt;#3&lt;/em&gt; Try it out!&lt;/h2&gt;
404
405&lt;p&gt;Now you'll try a test correspondence with a computer program named Edward, which knows
406how to use encryption. Except where noted, these are the same steps you'd follow when
407corresponding with a real, live person.&lt;/p&gt;
408
409&lt;/div&gt;&lt;!-- End .section-intro --&gt;
410
411&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
412&lt;div id="step-3a" class="step"&gt;
413&lt;div class="sidebar"&gt;
414
415&lt;p&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/section3-try-it-out.png"
416alt="Try it out." /&gt;&lt;/p&gt;
417
418&lt;/div&gt;&lt;!-- /.sidebar --&gt;
419&lt;div class="main"&gt;
420
421&lt;h3&gt;&lt;em&gt;Step 3.a&lt;/em&gt; Send Edward your public key&lt;/h3&gt;
422
423&lt;p&gt;This is a special step that you won't have to do when corresponding with real people. In
424your email program's menu, go to <span class="removed"><del><strong>OpenPGP</strong></del></span> <span class="inserted"><ins><em>Enigmail</em></ins></span> &rarr; Key Management. You should see your key in
425the list that pops up. Right click on your key and select Send Public Keys by Email. This
426will create a new draft message, as if you had just hit the Write button.&lt;/p&gt;
427
428&lt;p&gt;Address the message to edward-en@fsf.org. Put at least one word (whatever you want)
429in the subject and body of the <span class="removed"><del><strong>email, then</strong></del></span> <span class="inserted"><ins><em>email. Then</em></ins></span> hit send.&lt;/p&gt;
430
431<span class="inserted"><ins><em>&lt;p&gt;There should be an icon of a yellow key in the bottom right of the composition
432window. This means that encryption is on, however, we want this first special message to
433Edward to be unencrypted. Click the key icon once to turn encryption off. The key should
434become grey, with a blue dot on it (to alert you that the setting has been changed from
435the default). Once encryption is off, hit Send.&lt;/p&gt;</em></ins></span>
436
437&lt;p class="notes"&gt;It may take two or three minutes for Edward to respond. In the meantime,
438you might want to skip ahead and check out the &lt;a href="#section5"&gt;Use it Well&lt;/a&gt; section
439of this guide. Once he's responded, head to the next step. From here on, you'll be doing
440just the same thing as when corresponding with a real person.&lt;/p&gt;
441
442<span class="inserted"><ins><em>&lt;p&gt;When you open Edward's reply, Enigmail may prompt you for your password before using
443your private key to decrypt it.&lt;/p&gt;</em></ins></span>
444
445&lt;/div&gt;&lt;!-- End .main --&gt;
446&lt;/div&gt;&lt;!-- End #step-3a .step --&gt;
447
448&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
449&lt;div id="step-3b" class="step"&gt;
450&lt;div class="main"&gt;
451
452&lt;h3&gt;&lt;em&gt;Step 3.b&lt;/em&gt; Send a test encrypted email&lt;/h3&gt;
453
454&lt;p&gt;Write a new email in your email program, addressed to edward-en@fsf.org. Make the subject
455"Encryption test" or something similar and write something in the <span class="removed"><del><strong>body. Don't send it yet.&lt;/p&gt;
456
457&lt;p&gt;Click the icon of the</strong></del></span> <span class="inserted"><ins><em>body.&lt;/p&gt;
458
459&lt;p&gt;They</em></ins></span> key in the bottom right of the <span class="removed"><del><strong>composition</strong></del></span> window <span class="removed"><del><strong>(it</strong></del></span> should <span class="removed"><del><strong>turn
460yellow).</strong></del></span> <span class="inserted"><ins><em>be yellow, meaning encryption is
461on.</em></ins></span> This <span class="removed"><del><strong>tells Enigmail to encrypt the email.&lt;/p&gt;</strong></del></span> <span class="inserted"><ins><em>will be your default from now on.&lt;/p&gt;</em></ins></span>
462
463&lt;p class="notes"&gt;Next to the key, you'll notice an icon of a pencil. Clicking this tells
464Enigmail to add a special, unique signature to your message, generated using your private
465key. This is a separate feature from encryption, and you don't have to use it for this
466guide.&lt;/p&gt;
467
468&lt;p&gt;Click Send. Enigmail will pop up a window that says "Recipients not valid, not trusted
469or not found."&lt;/p&gt;
470
471&lt;p&gt;To encrypt an email to Edward, you need his public key, so now you'll have Enigmail
472download it from a keyserver. Click Download Missing Keys and use the default in the
473pop-up that asks you to choose a keyserver. Once it finds keys, check the first one (Key
474ID starting with C), then select ok. Select ok in the next pop-up.&lt;/p&gt;
475
476&lt;p&gt;Now you are back at the "Recipients not valid, not trusted or not found" screen. <span class="removed"><del><strong>Select</strong></del></span> <span class="inserted"><ins><em>Check
477the box in front of</em></ins></span> Edward's key <span class="removed"><del><strong>from the list</strong></del></span> and click <span class="removed"><del><strong>Ok. If</strong></del></span> <span class="inserted"><ins><em>Send.&lt;/p&gt;
478
479&lt;p class="notes"&gt;Since you encrypted this email with Edward's public key, Edward's private
480key is required to decrypt it. Edward is</em></ins></span> the <span class="removed"><del><strong>message doesn't send automatically,</strong></del></span> <span class="inserted"><ins><em>only one with his private key, so no one
481except him &mdash; not even</em></ins></span> you <span class="inserted"><ins><em>&mdash;</em></ins></span> can <span class="removed"><del><strong>hit send now.&lt;/p&gt;</strong></del></span> <span class="inserted"><ins><em>decrypt it.&lt;/p&gt;</em></ins></span>
482
483&lt;!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ --&gt;
484&lt;div class="troubleshooting"&gt;
485
486&lt;h4&gt;Troubleshooting&lt;/h4&gt;
487
488&lt;dl&gt;
489&lt;dt&gt;Enigmail can't find Edward's key&lt;/dt&gt;
490
491&lt;dd&gt;Close the pop-ups that have appeared since you <span class="removed"><del><strong>clicked.</strong></del></span> <span class="inserted"><ins><em>clicked Send.</em></ins></span> Make sure you are connected
492to the Internet and try again. If that doesn't work, repeat the process, choosing a
493different keyserver when it asks you to pick one.&lt;/dd&gt;
494
495&lt;dt class="feedback"&gt;Don't see a solution to your problem?&lt;/dt&gt;
496
497&lt;dd class="feedback"&gt;Please let us know on the &lt;a
498href="https://libreplanet.org/wiki/GPG_guide/Public_Review"&gt;feedback page&lt;/a&gt;.&lt;/dd&gt;
499&lt;/dl&gt;
500
501&lt;/div&gt;&lt;!-- /.troubleshooting --&gt;
502&lt;/div&gt;&lt;!-- End .main --&gt;
503&lt;/div&gt;&lt;!-- End #step-3b .step --&gt;
504
505&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
506&lt;div id="step-headers_unencrypted" class="step"&gt;
507&lt;div class="main"&gt;
508
509&lt;h3&gt;&lt;em&gt;Important:&lt;/em&gt; Security tips&lt;/h3&gt;
510
511&lt;p&gt;Even if you encrypted your email, the subject line is not encrypted, so don't put
512private information there. The sending and receiving addresses aren't encrypted either,
513so they could be read by a surveillance system. When you send attachments, Enigmail will
514give you an option of whether you want to encrypt them.&lt;/p&gt;
515
516<span class="removed"><del><strong>&lt;p&gt;It's also good practice to click the key icon in your email composition window
517&lt;strong&gt;before&lt;/strong&gt; you start to write. Otherwise, your email client could save an
518unencrypted draft on the mail server, potentially exposing it to snooping.&lt;/p&gt;</strong></del></span>
519
520&lt;/div&gt;&lt;!-- End .main --&gt;
521&lt;/div&gt;&lt;!-- End #step-headers_unencrypted .step--&gt;
522
523&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
524&lt;div id="step-3c" class="step"&gt;
525&lt;div class="main"&gt;
526
527&lt;h3&gt;&lt;em&gt;Step 3.c&lt;/em&gt; Receive a response&lt;/h3&gt;
528
529&lt;p&gt;When Edward receives your email, he will use his private key to decrypt it, then <span class="removed"><del><strong>fetch</strong></del></span> <span class="inserted"><ins><em>use</em></ins></span>
530your public key <span class="removed"><del><strong>from a keyserver and use it</strong></del></span> <span class="inserted"><ins><em>(which you sent him in &lt;a href="#step-3a"&gt;Step 3.A&lt;/a&gt;)</em></ins></span> to encrypt <span class="removed"><del><strong>a response</strong></del></span> <span class="inserted"><ins><em>his
531reply</em></ins></span> to you.&lt;/p&gt;
532
533&lt;p <span class="removed"><del><strong>class="notes"&gt;Since you encrypted this email with Edward's public key, Edward's private
534key is required to decrypt it. Edward is the only one with his private key, so no one
535except him &mdash; not even you &mdash; can decrypt it.&lt;/p&gt;
536
537&lt;p</strong></del></span> class="notes"&gt;It may take two or three minutes for Edward to respond. In the meantime,
538you might want to skip ahead and check out the &lt;a href="#section5"&gt;Use it Well&lt;/a&gt; section
539of this guide.&lt;/p&gt;
540
541&lt;p&gt;When you receive Edward's email and open it, Enigmail will automatically detect that
542it is encrypted with your public key, and then it will use your private key to decrypt it.&lt;/p&gt;
543
544&lt;p&gt;Notice the bar that Enigmail shows you above the message, with information about the
545status of Edward's key.&lt;/p&gt;
546
547&lt;/div&gt;&lt;!-- End .main --&gt;
548&lt;/div&gt;&lt;!-- End #step-3c .step --&gt;
549
550&lt;!-- STEP 3D IS COMMENTED OUT UNTIL WE FIND A WAY TO VALIDATE SIGNATURES &lt;div id="step-3d"
551class="step"&gt;
552&lt;div class="main"&gt;
553
554&lt;h3&gt;&lt;em&gt;Step 3.d&lt;/em&gt; Send a test signed email to a friend&lt;/h3&gt;
555
556&lt;p&gt;Write a new email in your email program, addressed to a friend. If you want, tell them
557about this guide!&lt;/p&gt;
558
559&lt;p&gt;Before sending the email, click the icon of the pencil in the bottom right of the
560composition window (it should turn yellow). This tells Enigmail to sign the email with
561you private key.&lt;/p&gt;
562
563&lt;p&gt;After you click send, Enigmail will ask you for your password. It will do this any time
564it needs to use your public key.&lt;/p&gt;
565
566&lt;/div&gt;
567&lt;/div&gt;--&gt;
568&lt;/div&gt;&lt;/section&gt;&lt;!-- End #section3 --&gt;
569
570&lt;!-- ~~~~~~~~~ Section 4: Learn the Web of Trust ~~~~~~~~~ --&gt;
571&lt;section class="row" id="section4"&gt;&lt;div&gt;
572
573&lt;!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ --&gt;
574&lt;div class="section-intro"&gt;
575
576&lt;h2&gt;&lt;em&gt;#4&lt;/em&gt; Learn the Web of Trust&lt;/h2&gt;
577
578&lt;p&gt;Email encryption is a powerful technology, but it has a weakness; it requires a way to
579verify that a person's public key is actually theirs. Otherwise, there would be no way to
580stop an attacker from making an email address with your friend's name, creating keys to
581go with it and impersonating your friend. That's why the free software programmers that
582developed email encryption created keysigning and the Web of Trust.&lt;/p&gt;
583
584&lt;p&gt;When you sign someone's key, you are publicly saying that you trust that it does belong
585to them and not an impostor. People who use your public key can see the number of signatures
586it has. Once you've used GnuPG for a long time, you may have hundreds of signatures. The
587Web of Trust is the constellation of all GnuPG users, connected to each other by chains of
588trust expressed through signatures, forming a giant network. The more signatures a key has,
589and the more signatures its signers' keys have, the more trustworthy that key is.&lt;/p&gt;
590
591&lt;p&gt;People's public keys are usually identified by their key fingerprint, which is a string
592of digits like F357AA1A5B1FA42CFD9FE52A9FF2194CC09A61E8 (for Edward's key). You can see the
593fingerprint for your public key, and other public keys saved on your computer, by going to <span class="removed"><del><strong>OpenPGP</strong></del></span>
594<span class="inserted"><ins><em>Enigmail</em></ins></span> &rarr; Key Management in your email program's menu, then right clicking on the
595key and choosing Key Properties. It's good practice to share your fingerprint wherever
596you share your email address, so that people can double-check that they have the correct
597public key when they download yours from a keyserver.&lt;/p&gt;
598
599&lt;p class="notes"&gt;You may also see public keys referred to by their key ID, which is simply
600the last 8 digits of the fingerprint, like C09A61E8 for Edward. The key ID is visible
601directly from the Key Management <span class="removed"><del><strong>Window.</strong></del></span> <span class="inserted"><ins><em>window.</em></ins></span> This key ID is like a person's first name (it is
602a useful shorthand but may not be unique to a given key), whereas the fingerprint actually
603identifies the key uniquely without the possibility of confusion. If you only have the key
604ID, you can still look up the key (as well as its fingerprint), like you did in Step 3,
605but if multiple options appear, you'll need the fingerprint of the person to whom are
606trying to communicate to verify which one to use.&lt;/p&gt;
607
608&lt;/div&gt;&lt;!-- End .section-intro --&gt;
609
610&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
611&lt;div id="step-4a" class="step"&gt;
612&lt;div class="sidebar"&gt;
613
614&lt;p&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/section4-web-of-trust.png"
615alt="Section 4: Web of Trust" /&gt;&lt;/p&gt;
616
617&lt;/div&gt;&lt;!-- /.sidebar --&gt;
618&lt;div class="main"&gt;
619
620&lt;h3&gt;&lt;em&gt;Step 4.a&lt;/em&gt; Sign a key&lt;/h3&gt;
621
622&lt;p&gt;In your email program's menu, go to <span class="removed"><del><strong>OpenPGP</strong></del></span> <span class="inserted"><ins><em>Enigmail</em></ins></span> &rarr; Key Management.&lt;/p&gt;
623
624&lt;p&gt;Right click on Edward's public key and select Sign Key from the context menu.&lt;/p&gt;
625
626&lt;p&gt;In the window that pops up, select "I will not answer" and click ok.&lt;/p&gt;
627
628<span class="removed"><del><strong>&lt;p&gt;In your email program's menu, go to OpenPGP &rarr;</strong></del></span>
629
630<span class="inserted"><ins><em>&lt;p&gt;Now you should be back at the</em></ins></span> Key Management <span class="removed"><del><strong>&rarr;</strong></del></span> <span class="inserted"><ins><em>menu. Select</em></ins></span> Keyserver &rarr; Upload Public
631Keys and hit ok.&lt;/p&gt;
632
633&lt;p class="notes"&gt;You've just effectively said "I trust that Edward's public key actually
634belongs to Edward." This doesn't mean much because Edward isn't a real person, but it's
635good practice.&lt;/p&gt;
636
637&lt;!--&lt;div id="pgp-pathfinder"&gt;
638
639&lt;form enctype="application/x-www-form-urlencoded" action="/mk_path.cgi" method="get"&gt;
640
641&lt;p&gt;&lt;strong&gt;From:&lt;/strong&gt;
642&lt;input type="text" placeholder="xD41A008" name="FROM"&gt;&lt;/p&gt;
643
644&lt;p&gt;&lt;strong&gt;To:&lt;/strong&gt;
645&lt;input type="text" placeholder="50BD01x4" name="TO"&gt;&lt;/p&gt;
646
647&lt;p class="buttons"&gt;&lt;input type="submit" value="trust paths" name="PATHS"&gt;
648&lt;input type="reset" value="reset" name=".reset"&gt;&lt;/p&gt;
649
650&lt;/form&gt;
651
652&lt;/div&gt;&lt;!-- End #pgp-pathfinder --&gt;
653&lt;/div&gt;&lt;!-- End .main --&gt;
654&lt;/div&gt;&lt;!-- End #step-4a .step --&gt;
655
656&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
657&lt;div id="step-sign_real_keys" class="step"&gt;
658&lt;div class="main"&gt;
659
660&lt;h3&gt;&lt;em&gt;Important:&lt;/em&gt; check people's identification before signing their keys&lt;/h3&gt;
661
662&lt;p&gt;Before signing a real person's key, always make sure it actually belongs to them, and
663that they are who they say they are. Ask them to show you their ID (unless you trust them
664very highly) and their public key fingerprint -- not just the shorter public key ID, which
665could refer to another key as well. In Enigmail, answer honestly in the window that pops
666up and asks "How carefully have you verified that the key you are about to sign actually
667belongs to the person(s) named above?".&lt;/p&gt;
668
669&lt;/div&gt;&lt;!-- End .main --&gt;
670&lt;/div&gt;&lt;!-- End #step-sign_real_keys .step--&gt;
671&lt;/div&gt;&lt;/section&gt;&lt;!-- End #section4 --&gt;
672
673&lt;!-- ~~~~~~~~~ Section 5: Use it well ~~~~~~~~~ --&gt;
674&lt;section id="section5" class="row"&gt;&lt;div&gt;
675
676&lt;!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ --&gt;
677&lt;div class="section-intro"&gt;
678
679&lt;h2&gt;&lt;em&gt;#5&lt;/em&gt; Use it well&lt;/h2&gt;
680
681&lt;p&gt;Everyone uses GnuPG a little differently, but it's important to follow some basic
682practices to keep your email secure. Not following them, you risk the privacy of the people
683you communicate with, as well as your own, and damage the Web of Trust.&lt;/p&gt;
684
685&lt;/div&gt;&lt;!-- End .section-intro --&gt;
686
687&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
688&lt;div id="step-5a" class="step"&gt;
689&lt;div class="sidebar"&gt;
690
691&lt;p&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/section5-01-use-it-well.png"
692alt="Section 5: Use it Well" /&gt;&lt;/p&gt;
693
694&lt;/div&gt;&lt;!-- /.sidebar --&gt;
695&lt;div class="main"&gt;
696
697&lt;h3&gt;When should I encrypt?&lt;/h3&gt;
698
699&lt;p&gt;The more you can encrypt your messages, the better. If you only encrypt emails
700occasionally, each encrypted message could raise a red flag for surveillance systems. If all
701or most of your email is encrypted, people doing surveillance won't know where to start.&lt;/p&gt;
702
703&lt;p&gt;That's not to say that only encrypting some of your email isn't helpful -- it's a great
704start and it makes bulk surveillance more difficult.&lt;/p&gt;
705
706&lt;/div&gt;&lt;!-- End .main --&gt;
707&lt;/div&gt;&lt;!-- End #step-5a .step --&gt;
708
709&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
710&lt;div id="step-5b" class="step"&gt;
711&lt;div class="sidebar"&gt;
712
713&lt;p&gt;&lt;img src="//static.fsf.org/nosvn/enc-dev0/img/en/screenshots/section5-02-use-it-well.png"
714alt="Section 5: Use it Well" /&gt;&lt;/p&gt;
715
716&lt;/div&gt;&lt;!-- /.sidebar --&gt;
717&lt;div class="main"&gt;
718
719&lt;h3&gt;&lt;em&gt;Important:&lt;/em&gt; Be wary of invalid keys&lt;/h3&gt;
720
721&lt;p&gt;GnuPG makes email safer, but it's still important to watch out for invalid keys, which
722might have fallen into the wrong hands. Email encrypted with invalid keys might be readable
723by surveillance programs.&lt;/p&gt;
724
725&lt;p&gt;In your email program, go back to the second email that Edward sent you. Because Edward
726encrypted it with your public key, it will have a message from <span class="removed"><del><strong>OpenPGP</strong></del></span> <span class="inserted"><ins><em>Enigmail</em></ins></span> at the top, which
727most likely says <span class="removed"><del><strong>"OpenPGP:</strong></del></span> <span class="inserted"><ins><em>"Enigmail:</em></ins></span> Part of this message encrypted."&lt;/p&gt;
728
729&lt;p&gt;&lt;b&gt;When using GnuPG, make a habit of glancing at that bar. The program will warn you
730there if you get an email encrypted with a key that can't be trusted.&lt;/b&gt;&lt;/p&gt;
731
732&lt;/div&gt;&lt;!-- End .main --&gt;
733&lt;/div&gt;&lt;!-- End #step-5b .step --&gt;
734
735&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
736&lt;div id="step-5c" class="step"&gt;
737&lt;div class="main"&gt;
738
739&lt;h3&gt;Copy your revocation certificate to somewhere safe&lt;/h3&gt;
740
741&lt;p&gt;Remember when you created your keys and saved the revocation certificate that GnuPG
742made? It's time to copy that certificate onto the safest digital storage that you have --
743the ideal thing is a flash drive, disk, or hard drive stored in a safe place in your home.&lt;/p&gt;
744
745&lt;p&gt;If your private key ever gets lost or stolen, you'll need this certificate file to let
746people know that you are no longer using that keypair.&lt;/p&gt;
747
748&lt;/div&gt;&lt;!-- End .main --&gt;
749&lt;/div&gt;&lt;!-- End #step-5c .step --&gt;
750
751&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ --&gt;
752&lt;div id="step-lost_key" class="step"&gt;
753&lt;div class="main"&gt;
754
755&lt;h3&gt;&lt;em&gt;Important:&lt;/em&gt; act swiftly if someone gets your private key&lt;/h3&gt;
756
757&lt;p&gt;If you lose your private key or someone else gets ahold of it (say, by stealing or
758cracking your computer), it's important to revoke it immediately before someone else uses
759it to read your encrypted email. This guide doesn't cover how to revoke a key, but you
760can follow the &lt;a href="https://www.gnupg.org/gph/en/manual.html#AEN305"&gt;instructions on
761the GnuPG site&lt;/a&gt;. After you're done revoking, send an email to everyone with whom you
762usually use your key to make sure they know.&lt;/p&gt;
763
764&lt;/div&gt;&lt;!-- End .main --&gt;
765&lt;/div&gt;&lt;!-- End #step-lost_key .step--&gt;
766
767&lt;!-- ~~~~~~~~~ a div for each step ~~~~~~~~~
768&lt;div id="step-5d" class="step"&gt;
769&lt;div class="main"&gt;
770
771&lt;h3&gt;Make your public key part of your online identity&lt;/h3&gt;
772
773&lt;p&gt; First add your public key fingerprint to your email signature, then compose an email
774to at least five of your friends, telling them you just set up GnuPG and mentioning your
775public key fingerprint. Link to this guide and ask them to join you. Don't forget that
776there's also an awesome &lt;a href="infographic.html"&gt;infographic to share.&lt;/a&gt;&lt;/p&gt;
777
778&lt;p class="notes"&gt;Start writing your public key fingerprint anywhere someone would see
779your email address: your social media profiles, blog, Website, or business card. (At the
780Free Software Foundation, we put ours on our &lt;a href="https://fsf.org/about/staff"&gt;staff
781page&lt;/a&gt;.) We need to get our culture to the point that we feel like something is missing
782when we see an email address without a public key fingerprint.&lt;/p&gt;
783
784&lt;/div&gt;&lt;!-- End .main &lt;/div&gt; End #step-5d .step--&gt;
785&lt;/div&gt;&lt;/section&gt;&lt;!-- End #section5 --&gt;
786
787&lt;!-- ~~~~~~~~~ Section 6: Next steps ~~~~~~~~~ --&gt;
788&lt;section class="row" id="section6"&gt;
789&lt;div id="step-click_here" class="step"&gt;
790&lt;div class="main"&gt;
791
792&lt;h2&gt;&lt;a href="next_steps.html"&gt;Great job! Check out the next steps.&lt;/a&gt;&lt;/h2&gt;
793
794&lt;/div&gt;&lt;!-- End .main --&gt;
795&lt;/div&gt;&lt;!-- End #step-click_here .step--&gt;
796&lt;/section&gt;&lt;!-- End #section6 --&gt;
797
798&lt;!-- ~~~~~~~~~ FAQ ~~~~~~~~~ --&gt;
799&lt;!-- When un-commenting this section go to main.css and search for /* Guide Sections
800Background */ then add #faq to the desired color
801&lt;section class="row" id="faq"&gt;&lt;div&gt;
802&lt;div class="sidebar"&gt;
803
804&lt;h2&gt;FAQ&lt;/h2&gt;
805
806&lt;/div&gt;
807&lt;div class="main"&gt;
808
809&lt;dl&gt;
810&lt;dt&gt;My key expired&lt;/dt&gt;
811
812&lt;dd&gt;Answer coming soon.&lt;/dd&gt;
813
814&lt;dt&gt;Who can read encrypted messages? Who can read signed ones?&lt;/dt&gt;
815
816&lt;dd&gt;Answer coming soon.&lt;/dd&gt;
817
818&lt;dt&gt;My email program is opening at times I don't want it to open/is now my default program
819and I don't want it to be.&lt;/dt&gt;
820
821&lt;dd&gt;Answer coming soon.&lt;/dd&gt;
822&lt;/dl&gt;
823
824&lt;/div&gt;
825&lt;/div&gt;
826&lt;/section&gt; --&gt;&lt;!-- End #faq --&gt;
827
828&lt;!-- ~~~~~~~~~ Footer ~~~~~~~~~ --&gt;
829&lt;footer class="row" id="footer"&gt;&lt;div&gt;
830&lt;div id="copyright"&gt;
831
832&lt;h4&gt;&lt;a href="https://u.fsf.org/ys"&gt;&lt;img
833alt="Free Software Foundation" src="//static.fsf.org/nosvn/enc-dev0/img/fsf-logo.png"
834/&gt;&lt;/a&gt;&lt;/h4&gt;
835
836&lt;p&gt;Copyright &copy; 2014 &lt;a href="https://u.fsf.org/ys"&gt;Free Software Foundation&lt;/a&gt;,
837Inc. &lt;a href="https://my.fsf.org/donate/privacypolicy.html"&gt;Privacy Policy&lt;/a&gt;. &lt;a
838href="https://u.fsf.org/yr"&gt;Join.&lt;/a&gt;&lt;/p&gt;
839
840&lt;p&gt;&lt;em&gt;Version <span class="removed"><del><strong>2.1.</strong></del></span> <span class="inserted"><ins><em>3.0.</em></ins></span> &lt;a
841href="http://agpl.fsf.org/emailselfdefense.fsf.org/edward/CURRENT/edward.tar.gz"&gt;Source
842code of Edward reply bot by Josh Drake &lt;zamnedix@gnu.org&gt; available under the GNU
843General Public License.&lt;/a&gt;&lt;/em&gt;&lt;/p&gt;
844
845&lt;p&gt;The images on this page are under a &lt;a
846href="https://creativecommons.org/licenses/by/4.0/"&gt;Creative Commons
847Attribution 4.0 license (or later version)&lt;/a&gt;, and the rest of it is under
848a &lt;a href="https://creativecommons.org/licenses/by-sa/4.0"&gt;Creative Commons
849Attribution-ShareAlike 4.0 license (or later version)&lt;/a&gt;. &mdash; &lt;a
850href="http://www.gnu.org/licenses/license-list.html#OtherLicenses"&gt;Why these licenses?&lt;/a&gt;&lt;/p&gt;
851
852&lt;p&gt;Download the source package for &lt;a href="emailselfdefense_source.zip"&gt;this
853guide&lt;/a&gt;. Fonts used in the guide &amp; infographic: &lt;a
854href="https://www.google.com/fonts/specimen/Dosis"&gt;Dosis&lt;/a&gt; by Pablo Impallari, &lt;a
855href="http://www.google.com/fonts/specimen/Signika"&gt;Signika&lt;/a&gt; by Anna Giedry&#347;, &lt;a
856href="http://www.google.com/fonts/specimen/Archivo+Narrow"&gt;Archivo Narrow&lt;/a&gt; by Omnibus-Type,
857&lt;a href="http://www.thegopherarchive.com/gopher-files-hacks-pxl2000-119351.htm"&gt;PXL-2000&lt;/a&gt;
858by Florian Cramer.&lt;/p&gt;
859
860&lt;p&gt; &lt;a href="//weblabels.fsf.org/emailselfdefense.fsf.org/" rel="jslicense"&gt; JavaScript
861license information &lt;/a&gt; &lt;/p&gt;
862
863&lt;/div&gt;&lt;!-- /#copyright --&gt;
864
865&lt;p class="credits"&gt; Infographic and guide design by &lt;a rel="external"
866href="http://jplusplus.org"&gt;&lt;strong&gt;Journalism++&lt;/strong&gt; &lt;img
867src="//static.fsf.org/nosvn/enc-dev0/img/jplusplus.png"
868alt="Journalism++" /&gt;&lt;/a&gt; &lt;/p&gt;&lt;!-- /.credits --&gt;
869
870&lt;/div&gt;&lt;/footer&gt;&lt;!-- End #footer --&gt;
871</pre></body></html>