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5<title>Email Self-Defense - a guide to fighting surveillance with GnuPG
6encryption</title>
7<meta name="keywords" content="GnuPG, GPG, openpgp, surveillance, privacy,
8email, security, GnuPG2, encryption" />
9<meta name="description" content="Email surveillance violates our fundamental
10rights and makes free speech risky. This guide will teach you email
11self-defense in 40 minutes with GnuPG." />
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19<!--<div style="text-align: center; padding: 2.5px; background-color: #a94442; color:#fcf8e3;"><p>Due to Enigmail's PGP functionality being migrated into Icedove and Thunderbird, steps 2 and 3 of the guide are currently out of date.</p><p> Thank you for your patience while we're working on a new round of updates.</p></div>-->
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22
23<!-- ~~~~~~~~~ GnuPG Header and introduction text ~~~~~~~~~ -->
24<header class="row" id="header"><div>
25
26
27<h1>Email Self-Defense</h1>
28
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50
51<ul id="menu" class="os">
52<li class="spacer"><a href="index.html" class="current">Set up guide</a></li>
53<!--<li><a href="mac.html">Mac OS</a></li>-->
54<!--<li><a href="windows.html">Windows</a></li>-->
55<li class="spacer"><a href="workshops.html">Teach your friends</a></li>
56<li class="spacer"><a href="http://hhldo3tnt5solzj2bwfvh7xm4slk2forpjwjyemhcfrlob5gq75gioid.onion/en" target="_blank">This site's tor onion service</a></li>
57<li class="spacer"><a
58href="https://fsf.org/share?u=https://u.fsf.org/zb&amp;t=Email%20encryption%20for%20everyone%20via%20%40fsf">
59Share&nbsp;
60<img src="../static/img/gnu-social.png" class="share-logo"
61alt="[GNU Social]" />&nbsp;
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67alt="[Hacker News]" /></a></li>
68</ul>
69
70<!-- ~~~~~~~~~ FSF Introduction ~~~~~~~~~ -->
71<div id="fsf-intro">
72
73<h3><a href="https://u.fsf.org/ys"><img
74alt="Free Software Foundation"
75src="../static/img/fsf-logo.png" />
76</a></h3>
77
78<div class="fsf-emphasis">
79
80<p>We fight for computer users' rights, and promote the development of free (as
81in freedom) software. Resisting bulk surveillance is very important to us.</p>
82
83<p><strong>Please donate to support Email Self-Defense. We need to keep
84improving it, and making more materials, for the benefit of people around
85the world taking the first step towards protecting their privacy.</strong></p>
86
87</div>
88
89<div style="text-align: center;">
90<p><a href="https://crm.fsf.org/civicrm/contribute/transact?reset=1&amp;id=14&amp;mtm_campaign=email_self_defense&amp;mtm_kwd=guide_donate"><img alt="Donate" src="../static/img/en/donate.png" /></a></p>
91
92<h5>Sign up</h5>
93<form action="https://my.fsf.org/civicrm/profile/create?reset=1&amp;gid=31" method="post">
94<p>Enter your email address to receive our monthly newsletter, the<br /><a href="https://www.fsf.org/free-software-supporter/">Free Software Supporter</a></p>
95
96<p><input id="frmEmail" type="text" name="email-Primary" size="18" maxlength="80" /></p>
97<p><input type="submit" name="_qf_Edit_next" value="Subscribe me" /></p>
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102</div>
103</form></div>
104
105</div><!-- End #fsf-intro -->
106
107<!-- ~~~~~~~~~ Guide Introduction ~~~~~~~~~ -->
108<div class="intro">
109
110<p><a id="infographic" href="infographic.html"><img
111src="../static/img/en/infographic-button.png"
112alt="View &amp; share our infographic &rarr;" /></a>
113Bulk surveillance violates our fundamental rights and makes free speech
114risky. This guide will teach you a basic surveillance self-defense skill: email
115encryption. Once you've finished, you'll be able to send and receive emails
116that are scrambled to make sure a surveillance agent or thief intercepting
117your email can't read them. All you need is a computer with an Internet
118connection, an email account, and about forty minutes.</p>
119
120<p>Even if you have nothing to hide, using encryption helps protect the privacy
121of people you communicate with, and makes life difficult for bulk surveillance
122systems. If you do have something important to hide, you're in good company;
123these are the same tools that whistleblowers use to protect their identities
124while shining light on human rights abuses, corruption, and other crimes.</p>
125
126<p>In addition to using encryption, standing up
127to surveillance requires fighting politically for a <a
128href="https://gnu.org/philosophy/surveillance-vs-democracy.html">reduction
129in the amount of data collected on us</a>, but the essential first step is
130to protect yourself and make surveillance of your communication as difficult
131as possible. This guide helps you do that. It is designed for beginners, but
132if you already know the basics of GnuPG or are an experienced free software
133user, you'll enjoy the advanced tips and the <a href="workshops.html">guide
134to teaching your friends</a>.</p>
135
136</div><!-- End .intro -->
137</div></header><!-- End #header -->
138
139<!-- ~~~~~~~~~ Section 1: Get the pieces ~~~~~~~~~ -->
140<section class="row" id="section1"><div>
141
142<!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
143<div class="section-intro">
144
145<h2><em>#1</em> Get the pieces</h2>
146
147<p class="notes">This guide relies on software which is <a
148href="https://www.gnu.org/philosophy/free-sw.html">freely licensed</a>;
149it's completely transparent and anyone can copy it or make their
150own version. This makes it safer from surveillance than proprietary
151software (like Windows or macOS). Learn more about free software at <a
152href="https://u.fsf.org/ys">fsf.org</a>.</p>
153
154<p>Most GNU/Linux operating systems come with GnuPG installed on them, so if you're running one of these systems, you don't have to download it. If you're running macOS or Windows, steps to download GnuPG are below. Before configuring your encryption setup with this guide, though, you'll need a desktop email program installed on your computer. Many GNU/Linux distributions have one installed already, such as Icedove, which may be under the alternate name "Thunderbird." Programs like these are another way to access the same email accounts you can access in a browser (like Gmail), but provide extra features.</p>
155
156</div><!-- End .section-intro -->
157
158<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
159<div id="step-1a" class="step">
160<div class="sidebar">
161
162<p class="large"><img
163src="../static/img/en/screenshots/step1a-install-wizard.png"
164alt="Step 1.A: Install Wizard" /></p>
165
166</div><!-- /.sidebar -->
167<div class="main">
168
169<h3><em>Step 1.a</em> Set up your email program with your email account</h3>
170
171<p>Open your email program and follow the wizard (step-by-step walkthrough)
172that sets it up with your email account. This usually starts from "Account Settings" &rarr; "Add Mail Account". You should get the email server settings from your systems administrator or the help section of your email account.</p>
173
174
175<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
176<div class="troubleshooting">
177
178<h4>Troubleshooting</h4>
179
180<dl>
181<dt>The wizard doesn't launch</dt>
182<dd>You can launch the wizard yourself, but the menu option for doing so is
183named differently in each email program. The button to launch it will be in
184the program's main menu, under "New" or something similar, titled something
185like "Add account" or "New/Existing email account."</dd>
186
187<dt>The wizard can't find my account or isn't downloading my mail</dt>
188<dd>Before searching the Web, we recommend you start by asking other people
189who use your email system, to figure out the correct settings.</dd>
190
191<dt>I can't find the menu</dt>
192<dd>In many new email programs, the main menu is represented by an image of
193three stacked horizontal bars.</dd>
194
195<dt class="feedback">Don't see a solution to your problem?</dt>
196<dd class="feedback">Please let us know on the <a
197href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback
198page</a>.</dd>
199</dl>
200
201</div><!-- /.troubleshooting -->
202</div><!-- End .main -->
203</div><!-- End #step1-a .step -->
204
205<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
206<div id="step-1b" class="step">
207<div class="main">
208
209<h3><em>Step 1.b</em> Install GnuPG</h3>
210
211<p>If you are using a GNU/Linux machine, you should already have GnuPG installed, and you can skip to <a href="#section2">Section 2</a>.</p>
212
213<p>If you are using a macOS or Windows machine, however, you need to first install the GnuPG program. Select your operating system below and follow the instructions. For the rest of this guide, the steps are the same for all operating systems. </p>
214
215<!-- ~~~~~~~~~ MACOS ~~~~~~~~~ -->
216<div class="troubleshooting">
217
218<h4>macOS</h4>
219
220<dl>
221<dt>Use a third-party package manager to install GnuPG</dt>
222<dd>
223<p>The default macOS package manager makes it difficult to install GnuPG and other pieces of free software (like Emacs, GIMP, or Inkscape). To make things easier, we recommend setting up the third-party package manager "Homebrew" to install GnuPG. For this, we will use a program called "Terminal," which is pre-installed on macOS.</p>
224
225<p># Copy the first command on the home page of <a href="https://brew.sh/">Homebrew</a> by clicking on the clipboard icon, and paste it in Terminal. Click "Enter" and wait for the installation to finalize.</p>
226<p># Then install GnuPG by entering the following code in Terminal:<br/>
227<code>brew install gnupg gnupg2</code></p>
228</dd>
229</dl>
230
231</div><!-- /.troubleshooting -->
232
233<!-- ~~~~~~~~~ WINDOWS ~~~~~~~~~ -->
234<div class="troubleshooting">
235
236<h4>Windows</h4>
237
238<dl>
239<dt>Get GnuPG by downloading GPG4Win</dt>
240<dd><p><a href="https://www.gpg4win.org/">GPG4Win</a> is an email and file encryption software package that includes GnuPG. Download and install the latest version, choosing default options whenever asked. After it's installed, you can close any windows that it creates.</p>
241</dd>
242</dl>
243
244</div><!-- /.troubleshooting -->
245</div><!-- End .main -->
246</div><!-- End #step1-b .step -->
247
248<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
249<div id="terminology" class="step">
250<div class="main">
251
252<h3>GnuPG, OpenPGP, what?</h3>
253
254<p>In general, the terms GnuPG, GPG, GNU Privacy Guard, OpenPGP and PGP
255are used interchangeably. Technically, OpenPGP (Pretty Good Privacy) is the
256encryption standard, and GNU Privacy Guard (often shortened to GPG or GnuPG)
257is the program that implements the standard. Most email programs provide an interface for GnuPG. There is also a newer version of GnuPG, called GnuPG2.</p>
258
259</div><!-- End .main -->
260</div><!-- End #terminology.step-->
261
262</div></section><!-- End #section1 -->
263
264<!-- ~~~~~~~~~ Section 2: Make your keys ~~~~~~~~~ -->
265<section id="section2" class="row"><div>
266
267<!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
268<div class="section-intro">
269
270<h2><em>#2</em> Make your keys</h2>
271<p class="float medium"><img src="../static/img/en/screenshots/step2a-01-make-keypair.png" alt="A robot with a head shaped like a key holding a private and a public key"/></p>
272
273<p>To use the GnuPG system, you'll need a public key and a private key (known
274together as a keypair). Each is a long string of randomly generated numbers
275and letters that are unique to you. Your public and private keys are linked
276together by a special mathematical function.</p>
277
278<p>Your public key isn't like a physical key, because it's stored in the open
279in an online directory called a keyserver. People download it and use it,
280along with GnuPG, to encrypt emails they send to you. You can think of the
281keyserver as a phonebook; people who want to send you encrypted email can
282look up your public key.</p>
283
284<p>Your private key is more like a physical key, because you keep it to
285yourself (on your computer). You use GnuPG and your private key together to
286descramble encrypted emails other people send to you. <strong>You should never share your private key with anyone, under any
287circumstances.</strong></p>
288
289<p>In addition to encryption and decryption, you can also use these keys to
290sign messages and check the authenticity of other people's signatures. We'll
291discuss this more in the next section.</p>
292
293</div><!-- End .section-intro -->
294
295<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
296<div id="step-2a" class="step">
297<div class="sidebar">
298<p class="large"><img
299src="../static/img/en/screenshots/step2a-02-make-keypair.png"
300alt="Step 2.A: Make your Keypair" /></p>
301
302<p class="large"><img
303src="../static/img/en/screenshots/step2a-03-make-keypair.png"
304alt="Step 2.A: Set your passphrase" /></p>
305
306</div><!-- /.sidebar -->
307<div class="main">
308
309<h3><em>Step 2.a</em> Make a keypair</h3>
310
311<h4>Make your keypair</h4>
312
313<p>We will use the command line in a terminal to create a keypair using the
314GnuPG program.</p>
315
316<p class="notes">Whether on GNU/Linux, macOS or Windows, you can launch your
317terminal ("Terminal" in macOS, "PowerShell" in Windows) from the Applications
318menu (some GNU/Linux systems respond to the <kbd>Ctrl + Alt + T</kbd>
319shortcut).</p>
320
321<p># Enter <code>gpg --full-generate-key</code> to start the process.</p>
322<p># To answer what kind of key you would like to create, select the default option: <samp>1&nbsp;RSA&nbsp;and&nbsp;RSA</samp>.</p>
323<p># Enter the following keysize: <code>4096</code> for a strong key.</p>
324<p># Choose the expiration date; we suggest <code>2y</code> (2 years).</p>
325<p>Follow the prompts to continue setting up with your personal details.</p>
326<p class="notes"> Depending on your version of GPG, you may need to use
327<code>--gen-key</code> instead of code>--full-generate-key</code>&#65279;.</p>
328
329<h4>Set your passphrase</h4>
330<p>On the screen titled "Passphrase," pick a strong password! You can
331do it manually, or you can use the Diceware method. Doing it manually
332is faster but not as secure. Using Diceware takes longer and requires
333dice, but creates a password that is much harder for attackers to figure
334out. To use it, read the section "Make a secure passphrase with Diceware" in <a
335href="https://theintercept.com/2015/03/26/passphrases-can-memorize-attackers-cant-guess/">
336this article</a> by Micah Lee.</p>
337
338
339<p>If you'd like to pick a passphrase manually, come up with something
340you can remember which is at least twelve characters long, and includes
341at least one lower case and upper case letter and at least one number or
342punctuation symbol. Never pick a password you've used elsewhere. Don't use
343any recognizable patterns, such as birthdays, telephone numbers, pets' names,
344song lyrics, quotes from books, and so on.</p>
345
346<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
347<div class="troubleshooting">
348
349<h4>Troubleshooting</h4>
350<dl>
351<dt>GnuPG is not installed</dt>
352<dd>
353You can check if this is the case with the command <code>gpg --version</code>&#65279;.
354If GnuPG is not installed, it will bring up the following result on most GNU/Linux operating systems, or something like it:
355<samp>Command 'gpg' not found, but can be installed with:
356 sudo apt install gnupg</samp>. Follow that command and install the program.</dd>
357
358<dt><i>gpg --full-generate-key</i> command not working</dt>
359<dd>Some distributions use a different version of GPG. When you receive an error code that is something along the lines of: <samp>gpg: Invalid option "--full-generate-key"</samp>, you can try the following commands: <br />
360<code>sudo apt update</code><br />
361<code>sudo apt install gnupg2</code><br />
362<code>gpg2 --full-generate-key</code><br />
363If this resolved the issue, you need to continue to use the gpg2 identifier instead of gpg throughout the following steps of the guide.
364<p class="notes"> Depending on your version of GPG, you may need to use
365<code>--gen-key</code> instead of code>--full-generate-key</code>&#65279;.</p>
366</dd>
367
368<dt>I took too long to create my passphrase</dt>
369<dd>That's okay. It's important to think about your passphrase. When you're ready, just follow the steps from the beginning again to create your key.</dd>
370
371<dt>How can I see my key?</dt>
372<dd>
373Use the following command to see all keys: <code>gpg --list-keys</code>&#65279;. Yours should be listed in there, and later, so will Edward's (<a href="#section3">Section 3</a>).<br />
374If you want to see only your key, you can use <code>gpg --list-key [your@email]</code>&#65279;.<br />
375You can also use <code>gpg --list-secret-key</code> to see your own private key.</dd>
376
377<dt>More resources</dt>
378<dd>For more information about this process, you can also refer to <a
379href="https://www.gnupg.org/gph/en/manual/c14.html#AEN25">The GNU Privacy
380Handbook</a>. Make sure you stick with "RSA and RSA" (the default),
381because it's newer and more secure than the algorithms the documentation
382recommends. Also make sure your key is at least 4096&nbsp;bits if you
383want to be secure.</dd>
384
385<dt class="feedback">Don't see a solution to your problem?</dt>
386<dd class="feedback">Please let us know on the <a
387href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback
388page</a>.</dd>
389</dl>
390
391</div><!-- /.troubleshooting -->
392
393<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
394<div class="troubleshooting">
395
396<h4>Advanced</h4>
397<dl>
398<dt>Advanced key pairs</dt>
399<dd>When GnuPG creates a new keypair, it compartmentalizes
400the encryption function from the signing function through <a
401href="https://wiki.debian.org/Subkeys">subkeys</a>. If you use
402subkeys carefully, you can keep your GnuPG identity more
403secure and recover from a compromised key much more quickly. <a
404href="https://alexcabal.com/creating-the-perfect-gpg-keypair/">Alex Cabal</a>
405and <a href="https://keyring.debian.org/creating-key.html">the Debian wiki</a>
406provide good guides for setting up a secure subkey configuration.</dd>
407</dl>
408
409</div><!-- /.troubleshooting -->
410</div><!-- End .main -->
411</div><!-- End #step-2a .step -->
412
413<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
414<div id="step-2b" class="step">
415<div class="sidebar">
416<p class="large"><img
417src="../static/img/en/screenshots/step2b-04-upload-and-certificate.png"
418alt="Step 2.B: Send to server and generate a certificate" /></p>
419
420</div><!-- /.sidebar -->
421<div class="main">
422
423<h3><em>Step 2.b</em> Some important steps following creation</h3>
424
425<h4>Upload your key to a keyserver</h4>
426<p>We will upload your key to a keyserver, so if someone wants to send you an encrypted message, they can download your public key from the Internet. There are multiple keyservers
427that you can select from the menu when you upload, but they are mostly all copies
428of each other. Any server will work, but it's good to remember which one you uploaded your key to originally. Also keep in mind, sometimes takes a few hours for them to match each other when a new key is uploaded.</p>
429<p># Copy your keyID: <code>gpg --list-key [your@email]</code> will list your public ("pub") key information, including your keyID, which is a unique list of numbers and letters. Copy this keyID, so you can use it in the following command.</p>
430<p># Upload your key to a server:
431<code>gpg --send-key [keyID]</code></p>
432
433<h4>Export your key to a file</h4>
434<p>Use the following command to export your secret key so you can import it into your email client at the next <a href="#section3">step</a>. To avoid getting your key compromised, store this in a safe place, and make sure that if it is transferred, it is done so in a trusted way. Exporting your keys can be done with the following commands:</p>
435<p><code>
436$ gpg --export-secret-keys -a [keyID] > my_secret_key.asc<br/>
437$ gpg --export -a [keyID] > my_public_key.asc
438</code></p>
439
440<h4>Generate a revocation certificate</h4>
441<p>Just in case you lose your key, or it gets compromised, you want to generate a certificate and choose to save it in a safe place on your computer for now (please refer to <a href="#step-6c">Step 6.C</a> for how to best store your revocation cerficate safely). This step is essential for your email self-defense, as you'll learn more about in <a href="#section5">Section 5</a>.</p>
442
443<p># Copy your keyID: <code>gpg --list-key [your@email]</code> will list your public ("pub") key information, including your keyID, which is a unique list of numbers and letters. Copy this keyID, so you can use it in the following command.</p>
444<p># Generate a revocation certificate: <code>gpg --gen-revoke --output revoke.asc [keyID]</code></p>
445<p># It will prompt you to give a reason for revocation, we recommend to use <samp>1&nbsp;=&nbsp;key has been compromised</samp>.</p>
446<p># You don't have to fill in a reason, but you can; then press "Enter" for an empty line, and confirm your selection.</p>
447
448
449<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
450<div class="troubleshooting">
451
452<h4>Troubleshooting</h4>
453
454<dl>
455<dt>Sending my key to the keyserver is not working</dt>
456<dd>Instead of using the general command to upload your key to the keyserver, you can use a more specific command and add the keyserver to your command <code>gpg --keyserver keys.openpgp.org --send-key [keyID]</code>&#65279;.</dd>
457
458<dt>My key doesn't seem to be working or I get a "permission denied."</dt>
459<dd><p>Like every other file or folder, gpg keys are subject to permissions. If these are not set correctly, your system may not be accepting your keys. You can follow the next steps to check, and update to the right permissions.</p>
460
461<p># Check your permissions: <code>ls -l ~/.gnupg/*</code></p>
462<p># Set permissions to read, write, execute for only yourself, no others. These are the recommended permissions for your folder. <br/>
463You can use the code: <code>chmod 700 ~/.gnupg</code></p>
464<p># Set permissions to read and write for yourself only, no others. These are the recommended permissions for the keys inside your folder. <br/>
465You can use the code: <code>chmod 600 ~/.gnupg/*</code></p>
466
467<p class="notes">If you have (for any reason) created your own folders inside ~/.gnupg, you must also additionally apply execute permissions to that folder. Folders require execution privileges to be opened. For more information on permissions, you can check out <a href="https://helpdeskgeek.com/linux-tips/understanding-linux-permissions-chmod-usage/">this detailed information guide</a>.</p>
468</dd>
469
470<dt class="feedback">Don't see a solution to your problem?</dt>
471<dd class="feedback">Please let us know on the <a
472href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback
473page</a>.</dd>
474</dl>
475
476</div><!-- /.troubleshooting -->
477
478<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
479<div class="troubleshooting">
480
481<h4>Advanced</h4>
482
483<dl>
484<dt>More about keyservers</dt>
485<dd>You can find some more keyserver information<a
486href="https://www.gnupg.org/gph/en/manual/x457.html"> in this manual</a>. <a
487href="https://sks-keyservers.net/overview-of-pools.php">The sks Web site</a>
488maintains a list of highly interconnected keyservers. You can also <a
489href="https://www.gnupg.org/gph/en/manual/x56.html#AEN64">directly export
490your key</a> as a file on your computer.</dd>
491
492<dt>Transferring your keys</dt>
493<dd>
494<p>Use the following commands to transfer your keys. To avoid getting your key compromised, store it in a safe place, and make sure that if it is transferred, it is done so in a trusted way. Importing and exporting a key can be done with the following commands:</p>
495
496<p><code>
497$ gpg --export-secret-keys -a [keyID] > my_private_key.asc<br />
498$ gpg --export -a [keyID] > my_public_key.asc<br />
499$ gpg --import my_private_key.asc<br />
500$ gpg --import my_public_key.asc
501</code></p>
502
503<p>Ensure that the keyID printed is the correct one, and if so, then go ahead and add ultimate trust for it:</p>
504
505<p><code>
506$ gpg --edit-key [your@email]
507</code></p>
508
509<p>Because this is your key, you should choose <code>ultimate</code>&#65279;. You shouldn't trust anyone else's key ultimately.</p>
510
511<p class="notes"> Refer to <a href="#step-2b">Troubleshooting in Step 2.B</a> for more information on permissions. When transferring keys, your permissions may get mixed, and errors may be prompted. These are easily avoided when your folders and files have the right permissions</p>
512</dd>
513</dl>
514
515</div><!-- /.troubleshooting -->
516</div><!-- End .main -->
517</div><!-- End #step-2b .step -->
518</div></section><!-- End #section2 -->
519
520<!-- ~~~~~~~~~ Section 3: Set up email encryption ~~~~~~~~~ -->
521<section id="section3" class="row"><div>
522
523<!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
524<div class="section-intro">
525
526<h2><em>#3</em> Set up email encryption</h2>
527<p class="notes">The Icedove (or Thunderbird) email program has PGP functionality integrated, which makes it pretty easy to work with. We'll take you through the steps of integrating and using your key in these email clients.</p>
528
529</div><!-- End .section-intro -->
530
531<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
532<div id="step-3a" class="step">
533<div class="sidebar">
534
535<p class="large"><img src="../static/img/en/screenshots/step3a-open-key-manager.png"
536alt="Step 3.A: Email Menu" /></p>
537
538<p class="large"><img src="../static/img/en/screenshots/step3a-import-from-file.png"
539alt="Step 3.A: Import From File" /></p>
540
541<p class="large"><img src="../static/img/en/screenshots/step3a-success.png"
542alt="Step 3.A: Success" /></p>
543
544<p class="large"><img src="../static/img/en/screenshots/step3a-troubleshoot.png"
545alt="Step 3.A: Troubleshoot" /></p>
546</div><!-- /.sidebar -->
547<div class="main">
548
549<h3><em>Step 3.a</em> Set up your email with encryption</h3>
550
551<p>Once you have set up your email with encryption, you can start contributing to encrypted traffic on the Internet. First we'll get your email client to import your secret key, and we will also learn how to get other people's public keys from servers so you can send and receive encrypted email.</p>
552
553<p># Open your email client and use "Tools" &rarr; <i>OpenPGP Key Manager</i></p>
554<p># Under "File" &rarr; <i>Import Secret Key(s) From File</i></p>
555<p># Select the file you saved under the name [my_secret_key.asc] in <a href="#step-2b">Step 2.B</a> when you exported your key</p>
556<p># Unlock with your passphrase</p>
557<p># You will receive a "OpenPGP keys successfully imported" window to confirm success</p>
558<p># Go to "Account settings" &rarr; "End-To-End Encryption," and make sure your key is imported and select <i>Treat this key as a Personal Key</i>.</p>
559
560</div><!-- End .main -->
561
562<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
563<div class="main">
564<div class="troubleshooting">
565<h4>Troubleshooting</h4>
566<dl>
567<dt>I'm not sure the import worked correctly</dt>
568<dd>
569Look for "Account settings" &rarr; "End-To-End Encryption." Here you can see if your personal key associated with this email is found. If it is not, you can try again via the <i>Add key</i> option. Make sure you have the correct, active, secret key file.
570</dd>
571
572<dt class="feedback">Don't see a solution to your problem?</dt>
573<dd class="feedback">Please let us know on the <a
574href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback
575page</a>.</dd>
576</dl>
577
578</div><!-- /.troubleshooting -->
579</div><!-- End .main -->
580</div><!-- End #step3-a .step -->
581</div></section><!-- End #section3 -->
582
583<!-- ~~~~~~~~~ Section 4: Try it out ~~~~~~~~~ -->
584<section class="row" id="section4"><div>
585
586<!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
587<div class="section-intro">
588
589<h2><em>#4</em> Try it out!</h2>
590<p class="float small"><img src="../static/img/en/screenshots/section3-try-it-out.png" alt="Illustration of a person in a house with a cat connected to a server"/></p>
591<p>Now you'll try a test correspondence with an FSF computer program named Edward,
592who knows how to use encryption. Except where noted, these are the same
593steps you'd follow when corresponding with a real, live person.</p>
594
595<!-- <p>NOTE: Edward is currently having some technical difficulties, so he
596may take a long time to respond, or not respond at all. We're sorry about
597this and we're working hard to fix it. Your key will still work even without
598testing with Edward.</p> -->
599
600<div style="clear: both"></div>
601</div><!-- End .section-intro -->
602
603<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
604<div id="step-4a" class="step">
605<div class="sidebar">
606
607<p class="large"><img
608src="../static/img/en/screenshots/step4a-send-key-to-Edward.png"
609alt="Step 4.A Send key to Edward." /></p>
610
611</div><!-- /.sidebar -->
612<div class="main">
613
614<h3><em>Step 4.a</em> Send Edward your public key</h3>
615
616<p>This is a special step that you won't have to do when corresponding
617with real people. In your email program's menu, go to "Tools" &rarr; "OpenPGP Key
618Manager." You should see your key in the list that pops up. Right click
619on your key and select <i>Send Public Keys by Email</i>. This will create a new draft message, as if you had just hit the "Write" button, but in the attachment you will find your public keyfile.</p>
620
621<p>Address the message to <a
622href="mailto:edward-en@fsf.org">edward-en@fsf.org</a>. Put at least one word
623(whatever you want) in the subject and body of the email. Don't send yet.</p>
624
625<p>We want Edward to be able to open the email with your keyfile, so we want this first special message to be unencrypted. Make sure encryption is turned off by using the dropdown menu "Security" and select <i>Do Not Encrypt</i>. Once encryption is off, hit Send.</p>
626
627<p class="notes">It may take two or three minutes for Edward to
628respond. In the meantime, you might want to skip ahead and check out the <a
629href="#section6">Use it Well</a> section of this guide. Once you have received a response,
630head to the next step. From here on, you'll be doing just the same thing as
631when corresponding with a real person.</p>
632
633<p>When you open Edward's reply, GnuPG may prompt you for your passphrase
634before using your private key to decrypt it.</p>
635
636</div><!-- End .main -->
637</div><!-- End #step-4a .step -->
638
639<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
640<div id="step-4b" class="step">
641<div class="sidebar">
642
643<p class="large"><img
644src="../static/img/en/screenshots/step4b-option1-verify-key.png"
645alt="Step 4.B Option 1. Verify key" /></p>
646
647<p class="large"><img
648src="../static/img/en/screenshots/step4b-option2-import-key.png"
649alt="Step 4.B Option 2. Import key" /></p>
650</div><!-- /.sidebar -->
651
652<div class="main">
653
654<h3><em>Step 4.b</em> Send a test encrypted email</h3>
655
656<h4>Get Edward's key</h4>
657
658<p>To encrypt an email to Edward, you need its public key, so now you'll have
659to download it from a keyserver. You can do this in two different ways:</p>
660<p><strong>Option 1.</strong> In the email answer you received from Edward as a response to your first email, Edward's public key was included. On the right of the email, just above the writing area, you will find an "OpenPGP" button that has a lock and a little wheel next to it. Click that, and select <i>Discover</i> next to the text: "This message was signed with a key that you don't yet have." A popup with Edward's key details will follow.</p>
661
662<p><strong>Option 2.</strong> Open your OpenPGP Key manager, and under "Keyserver" choose <i>Discover Keys Online</i>. Here, fill in Edward's email address, and import Edward's key.</p>
663
664<p>The option <i>Accepted (unverified)</i> will add this key to your key manager, and now it can be used to send encrypted emails and to verify digital signatures from Edward.</p>
665
666<p class="notes">In the popup window confirming if you want to import Edward's key, you'll see many different emails that are all associated with its key. This is correct; you can safely import the key.</p>
667
668<p class="notes">Since you encrypted this email with Edward's public key,
669Edward's private key is required to decrypt it. Edward is the only one with
670its private key, so no one except Edward can decrypt it.</p>
671
672<h4>Send Edward an encrypted email</h4>
673
674<p> Write a new email in your email program, addressed to <a
675href="mailto:edward-en@fsf.org">edward-en@fsf.org</a>. Make the subject
676"Encryption test" or something similar and write something in the body.</p>
677
678<p>This time, make sure encryption is turned on by using the dropdown menu "Security" and select <i>Require Encryption</i>. Once encryption is on, hit Send.</p>
679
680
681<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
682<div class="troubleshooting">
683
684<h4>Troubleshooting</h4>
685
686<dl>
687<dt>"Recipients not valid, not trusted or not found"</dt>
688<dd>You could get the above error message, or something along these lines: "Unable to send this message with end-to-end encryption, because there are problems with the keys of the following recipients: ..." In these cases, you may be trying to send an encrypted email to someone when you do not have their public key yet. Make sure you follow the steps above to import the key to your key manager. Open the OpenPGP Key Manager to make sure the recipient is listed there.</dd>
689
690<dt>Unable to send message</dt>
691<dd>You could get the following message when trying to send your encrypted email: "Unable to send this message with end-to-end encryption, because there are problems with the keys of the following recipients: edward-en@fsf.org." This usually means you imported the key with the "unaccepted (unverified) option." Go to the "key properties" of this key by right clicking on the key in the OpenPGP Key Manager, and select the option <i>Yes, but I have not verified that this is the correct key</i> in the "Acceptance" option at the bottom of this window. Resend the email.</dd>
692
693<dt>I can't find Edward's key</dt>
694<dd>Close the pop-ups that have appeared since you clicked Send. Make sure
695you are connected to the Internet and try again. If that doesn't work, you can download the key manually from <a href="https://keys.openpgp.org/search?q=edward-en%40fsf.org">the keyserver</a>, and import it by using the <i>Import Public Key(s) from File</i> option in the OpenPGP Key Manager.</dd>
696
697<dt>Unscrambled messages in the Sent folder</dt>
698<dd>Even though you can't decrypt messages encrypted to someone else's key,
699your email program will automatically save a copy encrypted to your public key,
700which you'll be able to view from the Sent folder like a normal email. This
701is normal, and it doesn't mean that your email was not sent encrypted.</dd>
702
703<dt class="feedback">Don't see a solution to your problem?</dt>
704<dd class="feedback">Please let us know on the <a
705href="https://libreplanet.org/wiki/GPG_guide/Public_Review">feedback
706page</a>.</dd>
707</dl>
708
709</div><!-- /.troubleshooting -->
710
711<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
712<div class="troubleshooting">
713
714<h4>Advanced</h4>
715
716<dl>
717<dt>Encrypt messages from the command line</dt>
718<dd>You can also encrypt and decrypt messages and files from the <a
719href="https://www.gnupg.org/gph/en/manual/x110.html">command line</a>,
720if that's your preference. The option --armor makes the encrypted output
721appear in the regular character set.</dd>
722</dl>
723
724</div><!-- /.troubleshooting -->
725</div><!-- End .main -->
726</div><!-- End #step-4b .step -->
727
728<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
729<div id="step-headers_unencrypted" class="step">
730<div class="main">
731
732<h3><em>Important:</em> Security tips</h3>
733
734<p>Even if you encrypt your email, the subject line is not encrypted, so
735don't put private information there. The sending and receiving addresses
736aren't encrypted either, so a surveillance system can still figure out who
737you're communicating with. Also, surveillance agents will know that you're
738using GnuPG, even if they can't figure out what you're saying. When you
739send attachments, you can choose to encrypt them or not,
740independent of the actual email.</p>
741
742<p>For greater security against potential attacks, you can turn off
743HTML. Instead, you can render the message body as plain text. In order
744to do this in Icedove or Thunderbird, go to "View" &rarr; "Message Body As" &rarr; <i>Plain
745Text</i>.</p>
746
747</div><!-- End .main -->
748</div><!-- End #step-headers_unencrypted .step-->
749
750<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
751<div id="step-4c" class="step">
752<div class="sidebar">
753
754<p class="large"><img
755src="../static/img/en/screenshots/step4c-Edward-response.png"
756alt="Step 4.C Edward's response" /></p>
757
758</div><!-- /.sidebar -->
759
760<div class="main">
761
762<h3><em>Step 4.c</em> Receive a response</h3>
763
764<p>When Edward receives your email, it will use its private key to decrypt
765it, then reply to you. </p>
766
767<p class="notes">It may take two or three minutes for Edward to
768respond. In the meantime, you might want to skip ahead and check out the <a
769href="#section6">Use it Well</a> section of this guide.</p>
770
771<p>Edward will send you an encrypted email back saying your email was received and decrypted. Your email client will automatically decrypt Edward's message.</p>
772
773<p class="notes">The OpenPGP button in the email will show a little green checkmark over the lock symbol to show the message is encrypted, and a little orange warning sign which means that you have accepted the key, but not verified it. When you have not yet accepted the key, you will see a little question mark there. Clicking the prompts in this button will lead you to key properties as well.</p>
774
775</div><!-- End .main -->
776</div><!-- End #step-4c .step -->
777
778<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
779<div id="step-4d" class="step">
780<div class="main">
781
782<h3><em>Step 4.d</em> Send a signed test email</h3>
783
784<p>GnuPG includes a way for you to sign messages and files, verifying that
785they came from you and that they weren't tampered with along the way. These
786signatures are stronger than their pen-and-paper cousins -- they're impossible
787to forge, because they're impossible to create without your private key
788(another reason to keep your private key safe).</p>
789
790<p>You can sign messages to anyone, so it's a great way to make people
791aware that you use GnuPG and that they can communicate with you securely. If
792they don't have GnuPG, they will be able to read your message and see your
793signature. If they do have GnuPG, they'll also be able to verify that your
794signature is authentic.</p>
795
796<p>To sign an email to Edward, compose any message to the email address and click the
797pencil icon next to the lock icon so that it turns gold. If you sign a
798message, GnuPG may ask you for your password before it sends the message,
799because it needs to unlock your private key for signing.</p>
800
801<p>In "Account Settings" &rarr; "End-To-End-Encryption" you can opt to <i>add digital signature by default</i>.</p>
802
803</div><!-- End .main -->
804</div><!-- End #step-4d .step -->
805
806<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
807<div id="step-4e" class="step">
808<div class="main">
809
810<h3><em>Step 4.e</em> Receive a response</h3>
811
812<p>When Edward receives your email, he will use your public key (which
813you sent him in <a href="#step-3a">Step 3.A</a>) to verify the message
814you sent has not been tampered with and to encrypt a reply to you.</p>
815
816<p class="notes">It may take two or three minutes for Edward to
817respond. In the meantime, you might want to skip ahead and check out the <a
818href="#section6">Use it Well</a> section of this guide.</p>
819
820<p>Edward's reply will arrive encrypted, because he prefers to use encryption
821whenever possible. If everything goes according to plan, it should say
822"Your signature was verified." If your test signed email was also encrypted,
823he will mention that first.</p>
824
825<p>When you receive Edward's email and open it, your email client will
826automatically detect that it is encrypted with your public key, and
827then it will use your private key to decrypt it.</p>
828
829</div><!-- End .main -->
830</div><!-- End #step-4e .step -->
831</div></section>
832
833<!-- ~~~~~~~~~ Section 5: Learn About the Web of Trust ~~~~~~~~~ -->
834<section class="row" id="section5"><div>
835
836<!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
837<div class="section-intro">
838
839<h2><em>#5</em> Learn about the Web of Trust</h2>
840<p class="float small"><img src="../static/img/en/screenshots/section5-web-of-trust.png" alt="Illustration of keys all interconnected with a web of lines"/></p>
841
842<p>Email encryption is a powerful technology, but it has a weakness:
843it requires a way to verify that a person's public key is actually
844theirs. Otherwise, there would be no way to stop an attacker from making
845an email address with your friend's name, creating keys to go with it, and
846impersonating your friend. That's why the free software programmers that
847developed email encryption created keysigning and the Web of Trust.</p>
848
849<p>When you sign someone's key, you are publicly saying that you've verified
850that it belongs to them and not someone else.</p>
851
852<p>Signing keys and signing messages use the same type of mathematical
853operation, but they carry very different implications. It's a good practice
854to generally sign your email, but if you casually sign people's keys, you
855may accidentally end up vouching for the identity of an imposter.</p>
856
857<p>People who use your public key can see who has signed it. Once you've
858used GnuPG for a long time, your key may have hundreds of signatures. You
859can consider a key to be more trustworthy if it has many signatures from
860people that you trust. The Web of Trust is a constellation of GnuPG users,
861connected to each other by chains of trust expressed through signatures.</p>
862
863</div><!-- End .section-intro -->
864
865<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
866<div id="step-5a" class="step">
867<div class="sidebar">
868
869<p class="large"><img
870src="../static/img/en/screenshots/step5a-key-properties.png"
871alt="Section 5: trusting a key" /></p>
872
873</div><!-- /.sidebar -->
874<div class="main">
875
876<h3><em>Step 5.a</em> Sign a key</h3>
877
878<p>In your email program's menu, go to OpenPGP Key Manager and select <i>Key properties</i> by right clicking on Edward's key.</p>
879
880<p>Under "Your Acceptance," you can select <i>Yes, I've verified in person this key has the correct fingerprint"</i>.</p>
881
882<p class="notes">You've just effectively said "I trust that Edward's public
883key actually belongs to Edward." This doesn't mean much because Edward isn't
884a real person, but it's good practice, and for real people it is important. You can read more about signing a person's key in the <a href="#check-ids-before-signing">check IDs before signing</a> section.</p>
885
886<!--<div id="pgp-pathfinder">
887
888<form enctype="application/x-www-form-urlencoded" action="/mk_path.cgi"
889method="get">
890
891<p><strong>From:</strong><input type="text" value="xD41A008"
892name="FROM"></p>
893
894<p><strong>To:</strong><input type="text" value="50BD01x4" name="TO"></p>
895
896<p class="buttons"><input type="submit" value="trust paths" name="PATHS"><input
897type="reset" value="reset" name=".reset"></p>
898
899</form>
900
901</div>End #pgp-pathfinder -->
902</div><!-- End .main -->
903</div><!-- End #step-5a .step -->
904
905<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
906<div id="step-identify_keys" class="step">
907<div class="main">
908
909<h3>Identifying keys: Fingerprints and IDs</h3>
910
911<p>People's public keys are usually identified by their key fingerprint,
912which is a string of digits like F357AA1A5B1FA42CFD9FE52A9FF2194CC09A61E8
913(for Edward's key). You can see the fingerprint for your public key, and
914other public keys saved on your computer, by going to OpenPGP Key
915Management in your email program's menu, then right clicking on the key
916and choosing Key Properties. It's good practice to share your fingerprint
917wherever you share your email address, so that people can double-check that
918they have the correct public key when they download yours from a keyserver.</p>
919
920<p class="notes">You may also see public keys referred to by a shorter
921keyID. This keyID is visible directly from the Key Management
922window. These eight character keyIDs were previously used for
923identification, which used to be safe, but is no longer reliable. You
924need to check the full fingerprint as part of verifying you have the
925correct key for the person you are trying to contact. Spoofing, in
926which someone intentionally generates a key with a fingerprint whose
927final eight characters are the same as another, is unfortunately
928common.</p>
929
930</div><!-- End .main -->
931</div><!-- End #step-identify_keys .step-->
932
933<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
934<div id="check-ids-before-signing" class="step">
935<div class="main">
936
937<h3><em>Important:</em> What to consider when signing keys</h3>
938
939<p>Before signing a person's key, you need to be confident that it actually
940belongs to them, and that they are who they say they are. Ideally, this
941confidence comes from having interactions and conversations with them over
942time, and witnessing interactions between them and others. Whenever signing
943a key, ask to see the full public key fingerprint, and not just the shorter
944keyID. If you feel it's important to sign the key of someone you've just
945met, also ask them to show you their government identification, and make
946sure the name on the ID matches the name on the public key.</p>
947
948<!-- ~~~~~~~~~ Troubleshooting ~~~~~~~~~ -->
949<div class="troubleshooting">
950
951<h4>Advanced</h4>
952
953<dl>
954<dt>Master the Web of Trust</dt>
955<dd>Unfortunately, trust does not spread between users the way <a
956href="https://fennetic.net/irc/finney.org/~hal/web_of_trust.html">many people
957think</a>. One of the best ways to strengthen the GnuPG community is to deeply <a
958href="https://www.gnupg.org/gph/en/manual/x334.html">understand</a> the Web of
959Trust and to carefully sign as many people's keys as circumstances permit.</dd>
960</dl>
961
962</div><!-- /.troubleshooting -->
963</div><!-- End .main -->
964</div><!-- End #check-ids-before-signing .step-->
965</div></section><!-- End #section5 -->
966
967<!-- ~~~~~~~~~ Section 6: Use it well ~~~~~~~~~ -->
968<section id="section6" class="row"><div>
969
970<!-- ~~~~~~~~~ section introduction: interspersed text ~~~~~~~~~ -->
971<div class="section-intro">
972
973<h2><em>#6</em> Use it well</h2>
974
975<p>Everyone uses GnuPG a little differently, but it's important to follow
976some basic practices to keep your email secure. Not following them, you
977risk the privacy of the people you communicate with, as well as your own,
978and damage the Web of Trust.</p>
979
980</div><!-- End .section-intro -->
981
982<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
983<div id="step-6a" class="step">
984<div class="sidebar">
985
986<p class="medium"><img
987src="../static/img/en/screenshots/section6-01-use-it-well.png"
988alt="Section 6: Use it Well (1)" /></p>
989
990</div><!-- /.sidebar -->
991<div class="main">
992
993<h3>When should I encrypt? When should I sign?</h3>
994
995<p>The more you can encrypt your messages, the better. If you only encrypt
996emails occasionally, each encrypted message could raise a red flag for
997surveillance systems. If all or most of your email is encrypted, people
998doing surveillance won't know where to start. That's not to say that only
999encrypting some of your email isn't helpful -- it's a great start and it
1000makes bulk surveillance more difficult.</p>
1001
1002<p>Unless you don't want to reveal your own identity (which requires other
1003protective measures), there's no reason not to sign every message, whether or
1004not you are encrypting. In addition to allowing those with GnuPG to verify
1005that the message came from you, signing is a non-intrusive way to remind
1006everyone that you use GnuPG and show support for secure communication. If you
1007often send signed messages to people that aren't familiar with GnuPG, it's
1008nice to also include a link to this guide in your standard email signature
1009(the text kind, not the cryptographic kind).</p>
1010
1011</div><!-- End .main -->
1012</div><!-- End #step-6a .step -->
1013
1014<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
1015<div id="step-6b" class="step">
1016<div class="sidebar">
1017
1018<p class="medium"><img
1019src="../static/img/en/screenshots/section6-02-use-it-well.png"
1020alt="Section 6: Use it Well (2)" /></p>
1021
1022</div><!-- /.sidebar -->
1023<div class="main">
1024
1025<h3>Be wary of invalid keys</h3>
1026
1027<p>GnuPG makes email safer, but it's still important to watch out for invalid
1028keys, which might have fallen into the wrong hands. Email encrypted with
1029invalid keys might be readable by surveillance programs.</p>
1030
1031<p>In your email program, go back to the first encrypted email that Edward
1032sent you. Because Edward encrypted it with your public key, it will have a
1033green checkmark a at the top "OpenPGP" button.</p>
1034
1035<p><strong>When using GnuPG, make a habit of glancing at that button. The program
1036will warn you there if you get an email signed with a key that can't
1037be trusted.</strong></p>
1038
1039</div><!-- End .main -->
1040</div><!-- End #step-6b .step -->
1041
1042<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
1043<div id="step-6c" class="step">
1044<div class="main">
1045
1046<h3>Copy your revocation certificate to somewhere safe</h3>
1047
1048<p>Remember when you created your keys and saved the revocation certificate
1049that GnuPG made? It's time to copy that certificate onto the safest storage that you have -- a flash drive, disk, or hard drive stored in a safe place in your home could work, not on a device you carry with you regularly. The safest way we know is actually to print the revocation certificate and store it in a safe place.</p>
1050
1051<p>If your private key ever gets lost or stolen, you'll need this certificate
1052file to let people know that you are no longer using that keypair.</p>
1053
1054</div><!-- End .main -->
1055</div><!-- End #step-6c .step -->
1056
1057<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
1058<div id="step-lost_key" class="step">
1059<div class="main">
1060
1061<h3><em>IMPORTANT:</em> ACT SWIFTLY if someone gets your private key</h3>
1062
1063<p>If you lose your private key or someone else gets a hold
1064of it (say, by stealing or cracking your computer), it's
1065important to revoke it immediately before someone else uses
1066it to read your encrypted email or forge your signature. This
1067guide doesn't cover how to revoke a key, but you can follow these <a
1068href="https://www.hackdiary.com/2004/01/18/revoking-a-gpg-key/">instructions</a>.
1069After you're done revoking, make a new key and send an email to everyone
1070with whom you usually use your key to make sure they know, including a copy
1071of your new key.</p>
1072
1073</div><!-- End .main -->
1074</div><!-- End #step-lost_key .step-->
1075
1076<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
1077<div id="webmail-and-GnuPG" class="step">
1078<div class="main">
1079
1080<h3>Webmail and GnuPG</h3>
1081
1082<p>When you use a web browser to access your email, you're using webmail,
1083an email program stored on a distant website. Unlike webmail, your desktop
1084email program runs on your own computer. Although webmail can't decrypt
1085encrypted email, it will still display it in its encrypted form. If you
1086primarily use webmail, you'll know to open your email client when you receive
1087a scrambled email.</p>
1088
1089</div><!-- End .main -->
1090</div><!-- End #webmail-and-GnuPG .step-->
1091
1092<!-- ~~~~~~~~~ a div for each step ~~~~~~~~~ -->
1093<div id="step-6d" class="step">
1094<div class="main">
1095
1096<h3>Make your public key part of your online identity</h3>
1097
1098<p> First add your public key fingerprint to your email signature, then
1099compose an email to at least five of your friends, telling them you just
1100set up GnuPG and mentioning your public key fingerprint. Link to this guide
1101and ask them to join you. Don't forget that there's also an awesome <a
1102href="infographic.html">infographic to share.</a></p>
1103
1104<p class="notes">Start writing your public key fingerprint anywhere someone
1105would see your email address: your social media profiles, blog, Website,
1106or business card. (At the Free Software Foundation, we put ours on our
1107<a href="https://fsf.org/about/staff">staff page</a>.) We need to get our
1108culture to the point that we feel like something is missing when we see an
1109email address without a public key fingerprint.</p>
1110
1111</div><!-- End .main-->
1112</div><!-- End #step-6d .step-->
1113</div></section><!-- End #section6 -->
1114
1115<!-- ~~~~~~~~~ Section 7: Next steps ~~~~~~~~~ -->
1116<section class="row" id="section7">
1117<div id="step-click_here" class="step">
1118<div class="main">
1119
1120<h2><a href="next_steps.html">Great job! Check out the next steps.</a></h2>
1121
1122</div><!-- End .main -->
1123</div><!-- End #step-click_here .step-->
1124</section><!-- End #section7 -->
1125
1126<!-- ~~~~~~~~~ FAQ ~~~~~~~~~ -->
1127<!-- When un-commenting this section go to main.css and search
1128for /* Guide Sections Background */ then add #faq to the desired color
1129<section class="row" id="faq"><div>
1130<div class="sidebar">
1131
1132<h2>FAQ</h2>
1133
1134</div>
1135<div class="main">
1136
1137<dl>
1138<dt>My key expired</dt>
1139<dd>Answer coming soon.</dd>
1140
1141<dt>Who can read encrypted messages? Who can read signed ones?</dt>
1142<dd>Answer coming soon.</dd>
1143
1144<dt>My email program is opening at times I don't want it to open/is now my
1145default program and I don't want it to be.</dt>
1146<dd>Answer coming soon.</dd>
1147</dl>
1148
1149</div>
1150</div>
1151</section> --><!-- End #faq -->
1152
1153<!-- ~~~~~~~~~ Footer ~~~~~~~~~ -->
1154<footer class="row" id="footer"><div>
1155<div id="copyright">
1156
1157<h4><a href="https://u.fsf.org/ys"><img
1158alt="Free Software Foundation"
1159src="../static/img/fsf-logo.png" /></a></h4>
1160
1161<p>Copyright &copy; 2014-2021 <a
1162href="https://u.fsf.org/ys">Free Software Foundation</a>, Inc. <a
1163href="https://my.fsf.org/donate/privacypolicy.html">Privacy Policy</a>. Please
1164support our work by <a href="https://u.fsf.org/yr">joining us as an associate
1165member.</a></p>
1166
1167<p>The images on this page are under a <a
1168href="https://creativecommons.org/licenses/by/4.0/">Creative Commons
1169Attribution 4.0 license (or later version)</a>, and the rest of it is under
1170a <a href="https://creativecommons.org/licenses/by-sa/4.0">Creative Commons
1171Attribution-ShareAlike 4.0 license (or later version)</a>. Download the <a
1172href="https://agpl.fsf.org/emailselfdefense.fsf.org/edward/CURRENT/edward.tar.gz">
1173source code of Edward reply bot</a> by Andrew Engelbrecht
1174&lt;andrew@engelbrecht.io&gt; and Josh Drake &lt;zamnedix@gnu.org&gt;,
1175available under the GNU Affero General Public License. <a
1176href="https://www.gnu.org/licenses/license-list.html#OtherLicenses">Why these
1177licenses?</a></p>
1178
1179<p>Fonts used in the guide &amp; infographic: <a
1180href="https://www.google.com/fonts/specimen/Dosis">Dosis</a> by Pablo
1181Impallari, <a href="https://www.google.com/fonts/specimen/Signika">Signika</a>
1182by Anna Giedry&#347;, <a
1183href="https://www.google.com/fonts/specimen/Archivo+Narrow">Archivo
1184Narrow</a> by Omnibus-Type, <a
1185href="https://libreplanet.org/wiki/GPG_guide/Graphics_Howto#Pitfalls">PXL-2000</a>
1186by Florian Cramer.</p>
1187
1188<p>Download the <a href="emailselfdefense_source.zip">source package</a>
1189for this guide, including fonts, image source files and the text of Edward's
1190messages.</p>
1191
1192<p>This site uses the Weblabels standard for labeling <a
1193href="https://www.fsf.org/campaigns/freejs">free JavaScript</a>. View
1194the JavaScript <a href="https://weblabels.fsf.org/emailselfdefense.fsf.org/"
1195rel="jslicense">source code and license information</a>.</p>
1196
1197</div><!-- /#copyright -->
1198
1199<p class="credits">Infographic and guide design by <a rel="external"
1200href="https://jplusplus.org"><strong>Journalism++</strong><img
1201src="static/img/jplusplus.png"
1202alt="Journalism++" /></a></p><!-- /.credits -->
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