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<!doctype html>
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Bitmask: encryption for mere mortals
</title>
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<div class="reveal">
<div class="slides">
<section>
<section data-markdown data-background-size="35%" data-background="images/kid-jumping.svg">
# BitmasK: encryption for mere mortals
### FOSDEM 2018
### kali - meskio - kwadronaut
<h3><a href="https://leap.se">https://leap.se</a></h3>
</section>
</section>
<section>
<section data-markdown>
## Problem: encrypted email is ...complicated
</section>
<section>
<video autoplay="false" width="800" controls="controls" loop src="video/gpgforjournalists.mp4"></video>
</section>
<section>
<img src="images/pgp.png">
</section>
<section>
<img src="images/pizarra.jpg">
</section>
</section>
<section>
<section data-markdown data-background-size="65%" data-background="images/silos.jpg">
# Problem: providers
</section>
<section>
<img src="images/lavabit.png">
</section>
<section >
<h2> Peer to peer?</h2><br/>
<img class="fragment" src="images/peer2peer.jpg" />
</section>
</section>
<section>
<h1>Better federation!</h1>
<h3>
<ul>
<li class="fragment">Protect providers from their users</li>
<li class="fragment">Protect users from the provider</li>
</ul>
</h3>
<aside class="notes">
sysadmins deserve a life too!
</aside>
</section>
<section>
<h2>What does<br>LEAP do?</h2>
<ul>
<li class="fragment">
<b>LEAP Platform:</b><br>toolkit to make it easier to run a service provider</li>
<li class="fragment">
<b>New protocols:</b><br>so no need to trust your connection provider</li>
<li class="fragment">
<b>Bitmask client:</b><br>smooth working client with compatible providers</li>
</ul>
</section>
<section>
<section data-markdown>
# leap mail service
* End-to-end encryption
* Backwards compatible with email and current OpenPGP usage
* Service provider has no access to user data
* Automatic key discovery and validation
* Cloud synchronized for high availability on multiple devices
</section>
<section>
<img src="./images/schema.jpg" />
<aside class="notes">
smtp imap
</aside>
</section>
<section>
<h2>email service</h2>
<img src="./images/mail_service.jpg" />
<aside class="notes">
smtp imap
</aside>
</section>
<section>
<h2>soledad</h2>
<img src="./images/soledad.jpg" />
</section>
<section>
<h2>mx</h2>
<img src="./images/mx.jpg" />
</section>
<section>
<img src="./images/schema.jpg" />
</section>
</section>
<section>
<section>
<h2> transitional key validation</h2>
generic rules for automatic key management, <br />transition from TOFU to more advanced ruleset.<br/>
<ul>
<li> bind key <-> email address </li>
<li> key directory</li>
<li> endorser (provider)</li>
<li> binding info: evidence for "educated guess"</li>
<li> verified key transition (automatic)</li>
</ul>
<a href="https://leap.se/en/docs/design/transitional-key-validation">[leap.se/en/docs/design/transitional-key-validation]</a>
</section>
<section>
<h2>TOFU</h2>
With a bunch of exceptions
<aside class="notes">
current situation
</aside>
</section>
<section data-markdown>
## 1. First Contact
When one or more keys are first discovered for a particular email address, the key with the highest validation level is registered.
</section>
<section>
<h2>2. Regular Refresh</h2>
<p>All keys are regularly refreshed to check for modified expirations, or new subkeys, or new keys signed by old keys.</p>
<p><small>This refresh SHOULD happen via some anonymizing mechanism.</small></p>
</section>
<section>
<h2>3. Key Replacement</h2>
<p>A registered key MUST be replaced by a new key in one of the following situations, and ONLY these situations:</p>
<ul>
<li class="fragment">Verified key transitions.</li>
<li class="fragment">If the user manually verifies the fingerprint of the new key.</li>
<li class="fragment">If the registered key is expired or revoked and the new key is of equal or higher validation level.</li>
<li class="fragment">If the registered key has never been successfully used and the new key has a higher validation level.</li>
<li class="fragment">If the registered key has no expiration date.</li>
</ul>
<aside class="notes">
verified key transtion == signed by the previous
</aside>
</section>
</section>
<section data-markdown>
## VPN
* Prevent eavesdropping.
* Circunvent internet censorship.
* Prevent leaks (DNS, IPv6, ...).
</section>
<section>
<h2>LEAP platform</h2>
<pre class="fragment"><code class="hljs" data-trim contenteditable>
sudo gem install leap_cli
leap new example --domain example.org
cd example
leap add-user --self
leap cert ca
leap cert dh
leap cert csr
leap node add blueberry services:openvpn \
ip_address:1.1.1.1 openvpn.gateway_address:1.1.1.2
leap node add raspberry services:couchdb,webapp \
ip_address:1.1.1.3
leap init node
leap deploy
</code></pre>
<aside class="notes">
Usability for sysadmins
</aside>
</section>
<section>
<section data-markdown>
## sysadmins are human
### and deserve usability too
</section>
<section data-markdown>
## "leap deploy"
</section>
<section>
<img src="images/leap-webapp2.png">
</section>
</section>
<section>
<section>
<img src="images/jump.png">
</section>
<section data-markdown>
## show me the code!
<a href="https://0xacab.org/leap/">https://0xacab.org/leap/</a>
* ~10 important repos
* GPL code
</section>
</section>
<section>
<section data-markdown>
# current state
</section>
<section data-markdown>
## Email Beta (0.10…)
### works on Linux
## Bitmask VPN
### works on Linux && Android
</section>
<section data-markdown>
## next steps
* OSX and windows
</section>
</section>
<section>
<img src="images/mycelia.jpg">
<h2>let a thousand providers bloom</h2>
</section>
<section>
<h2>🐧 thanks! questions?</h2>
<img src="images/contact-QR.png" alt="QR with info contact for leap" height="35%" width="35%">
<h3><a href="https://bitmask.net">https://bitmask.net</a></h3>
<h3><a href="https://leap.se">https://leap.se</a></h3>
<h3><a href="https://katzenpost.mixnetworks.org/#">katzenpost.mixnetworks.org </a>😼</h3>
</section>
</section>
<section>
</section>
<section>
<section>
<img src="images/downloadme.png">
</section>
<section>
<img src="images/thunderbird.png">
</section>
<section>
<img src="images/tb1.png">
</section>
<section>
<img src="images/tb1.png">
</section>
<section>
<img src="images/box.png">
</section>
</section>
<section>
<section data-markdown>
## 2. ability to use multiple devices
</section>
<section data-markdown>
# 🔑 🔄
### Synchronization Of
### Locally Encrypted Data Among Devices
</section>
<section data-markdown>
# data = 🖂 + 🔑
</section>
</section>
<section>
<section data-markdown>
## bitmask keymanager
## requires no user interaction
</section>
<section data-markdown>
## interoperability is a must
### many projects converging
#### (Watch AUTOCRYPT: Enigmail, K9, Mailpile, Bitmask)
</section>
</section>
<section>
<section data-markdown>
## SOLEDAD
* Synchronization of Locally Encrypted Data Among Devices
* auth: srp
* kdf: scrypt
* AES-256-GCM
* built on top of canonical's u1db
* vector clocks
* clientside: sqlcipher backend
* serverside: couchdb cluster
</section>
<section data-markdown>
## Problem: Attachments
* Syncing blobs in a convoluted store
* Pluggable BlobsIO backend for server (in dev)
* FS as MVP, others welcome!
</section>
</section>
<section>
<section data-markdown>
# Validation levels
low == less trust on the source
</section>
<section data-markdown>
## 1. Weak Chain
<sub>sks key servers, email attached key, OpenPGP header, ...</sub>
</section>
<section data-markdown>
## 2. Provider Trust
<sub>webfinger, provider mailvelope</sub>
Note:
* Certified by the provider
* Not auditable
</section>
<section data-markdown>
## 3. Provider Endorsement
<sub>NickNym</sub>
Note:
* auditable
</section>
<section data-markdown>
## 4. Historical Auditing
<sub>CONIKS, google's transparent keyserver</sub>
</section>
<section data-markdown>
## 5. Known Key
<sub>client pinned keys</sub>
</section>
<section data-markdown>
## 6. Fingerprint
<sub>manual verification</sub>
</section>
</section>
<!-- END OF THE TALK -->
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