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                        <h1><a class="header" href="#gpg1" id="gpg1">gpg(1)</a></h1>
<pre><code>gpg
  -o|--output                 Specify output file
  -a|--armor                  Create ascii output
  -u|--local-user &lt;name&gt;      Specify key for signing
  -r|--recipient              Encrypt for user
</code></pre>
<h2><a class="header" href="#generate-new-keypair" id="generate-new-keypair">Generate new keypair</a></h2>
<pre><code class="language-bash">gpg --full-generate-key
</code></pre>
<h2><a class="header" href="#list-keys" id="list-keys">List keys</a></h2>
<pre><code>gpg -k / --list-key               # public keys
gpg -K / --list-secret-keys       # secret keys
</code></pre>
<h2><a class="header" href="#edit-keys" id="edit-keys">Edit keys</a></h2>
<pre><code class="language-bash">gpg --edit-key &lt;KEY ID&gt;
</code></pre>
<p>Gives prompt to modify <code>KEY ID</code>, common commands:</p>
<pre><code class="language-bash">help         show help
save         save &amp; quit

list         list keys and user IDs
key &lt;N&gt;      select subkey &lt;N&gt;
uid &lt;N&gt;      select user ID &lt;N&gt;

expire       change expiration of selected key

adduid       add user ID
deluid       delete selected user ID

addkey       add subkey
delkey       delete selected subkey
</code></pre>
<h2><a class="header" href="#export--import-keys" id="export--import-keys">Export &amp; Import Keys</a></h2>
<pre><code class="language-bash">gpg --export --armor --output &lt;KEY.PUB&gt; &lt;KEY ID&gt;
gpg --import &lt;FILE&gt;
</code></pre>
<h2><a class="header" href="#search--send-keys" id="search--send-keys">Search &amp; Send keys</a></h2>
<pre><code class="language-bash">gpg --keyserver &lt;SERVER&gt; --send-keys &lt;KEY ID&gt;
gpg --keyserver &lt;SERVER&gt; --search-keys &lt;KEY ID&gt;
</code></pre>
<h2><a class="header" href="#encrypt-passphrase" id="encrypt-passphrase">Encrypt (passphrase)</a></h2>
<p>Encrypt file using <code>passphrase</code> and write encrypted data to <code>&lt;file&gt;.gpg</code>.</p>
<pre><code class="language-bash">gpg --symmetric &lt;file&gt;

# Decrypt using passphrase
gpg -o &lt;file&gt; --decrypt &lt;file&gt;.gpg
</code></pre>
<h2><a class="header" href="#encrypt-public-key" id="encrypt-public-key">Encrypt (public key)</a></h2>
<p>Encrypt file with <code>public key</code> of specified <code>recipient</code> and write encrypted
data to <code>&lt;file&gt;.gpg</code>.</p>
<pre><code class="language-bash">gpg --encrypt -r foo@bar.de &lt;file&gt;

# Decrypt at foos side (private key required)
gpg -o &lt;file&gt; --decrypt &lt;file&gt;.gpg
</code></pre>
<h2><a class="header" href="#signing" id="signing">Signing</a></h2>
<p>Generate a signed file and write to <code>&lt;file&gt;.gpg</code>.</p>
<pre><code class="language-bash"># Sign with private key of foo@bar.de
gpg --sign -u foor@bar.de &lt;file&gt;

# Verify with public key of foo@bar.de
gpg --verify &lt;file&gt;

# Extract content from signed file
gpg -o &lt;file&gt; --decrypt &lt;file&gt;.gpg
</code></pre>
<blockquote>
<p>Without <code>-u</code> use first private key in list <code>gpg -K</code> for signing.</p>
</blockquote>
<p>Files can also be <code>signed</code> and <code>encrypted</code> at once, gpg will first sign the
file and then encrypt it.</p>
<pre><code class="language-bash">gpg --sign --encrypt -r &lt;recipient&gt; &lt;file&gt;
</code></pre>
<h2><a class="header" href="#signing-detached" id="signing-detached">Signing (detached)</a></h2>
<p>Generate a <code>detached</code> signature and write to <code>&lt;file&gt;.asc</code>.
Send <code>&lt;file&gt;.asc</code> along with <code>&lt;file&gt;</code> when distributing.</p>
<pre><code class="language-bash">gpg --detach-sign --armor -u foor@bar.de &lt;file&gt;

# Verify
gpg --verify &lt;file&gt;.asc &lt;file&gt;
</code></pre>
<blockquote>
<p>Without <code>-u</code> use first private key in list <code>gpg -K</code> for signing.</p>
</blockquote>
<h2><a class="header" href="#abbreviations" id="abbreviations">Abbreviations</a></h2>
<ul>
<li><code>sec</code> secret key</li>
<li><code>ssb</code> secret subkey</li>
<li><code>pub</code> public key</li>
<li><code>sub</code> public subkey</li>
</ul>
<h2><a class="header" href="#keyservers" id="keyservers">Keyservers</a></h2>
<ul>
<li>http://pgp.mit.edu</li>
<li>http://keyserver.ubuntu.com</li>
<li>hkps://pgp.mailbox.org</li>
</ul>

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