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[GNUnet-SVN] [taler-twister] branch master updated: presentation minimal
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From: |
gnunet |
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Subject: |
[GNUnet-SVN] [taler-twister] branch master updated: presentation minimal skeleton |
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Date: |
Mon, 10 Sep 2018 11:51:18 +0200 |
This is an automated email from the git hooks/post-receive script.
marcello pushed a commit to branch master
in repository twister.
The following commit(s) were added to refs/heads/master by this push:
new c07d001 presentation minimal skeleton
c07d001 is described below
commit c07d001fd1fddee600ca94b27ed50916f00898ab
Author: Marcello Stanisci <address@hidden>
AuthorDate: Mon Sep 10 11:50:52 2018 +0200
presentation minimal skeleton
---
presentation/twister.tex | 553 +----------------------------------------------
1 file changed, 4 insertions(+), 549 deletions(-)
diff --git a/presentation/twister.tex b/presentation/twister.tex
index 7e82884..05ecf8e 100644
--- a/presentation/twister.tex
+++ b/presentation/twister.tex
@@ -29,10 +29,10 @@
% Adapt title information
% =======================
-\title{GNU Taler \\ Payments for the Common Good}
+\title{Twister \\ Easy C instrumentation and programmable proxy}
\institute{Taler Systems SA}
-\author{Dr. Christian Grothoff \& Leon Schumacher}
-\date{22.2.2018}
+\author{Dr. Christian Grothoff \& Marcello Stanisci}
+\date{10.9.2018}
% Some common packages
% ====================
@@ -53,558 +53,13 @@
\begin{document}
\begin{frame}
- \begin{center}
- GNU Taler: Payments for the Common Good
-
-% \includegraphics[width=0.66\textwidth]{logo-2017-fr.pdf}
- \includegraphics[width=0.66\textwidth]{taler-logo-2017.pdf}
- \end{center}
+ \frametitle{GNU Twister: C-friendly programmable proxy}
\begin{textblock*}{4cm}(.5cm,7.5cm) % {block width} (coords)
{\Large {\bf \url{taler.net}} \\
-% IRC{\bf \#taler} \\
-% {\small (on freenode)} \\
address@hidden \\
address@hidden }
\end{textblock*}
- \begin{textblock*}{4cm}(10cm,7.5cm) % {block width} (coords)
- \includegraphics[width=2cm]{ashoka.png}
-\end{textblock*}
-\end{frame}
-
-
-% Organization / Supplier
-
-\begin{frame}
-\frametitle{Organization}
-\begin{center}
-\begin{tikzpicture}
- \tikzstyle{def} = [node distance= 1.8em and 1.3em, inner sep=1em, outer
sep=.3em];
- \node (origin) at (0,0) {};
- \node (cg) [def,orange,above=of origin,draw]{CG};
- \node (gnu) [def, draw, above=of cg]{GNU};
- \node (pep) [def, draw, above right=of cg]{PEP SA};
- \node (ashoka) [def, draw, above left =of cg]{Ashoka};
- \node (ls) [def,orange,above right=of origin,draw]{LS};
- \node (mw) [def,orange,above left=of origin,draw]{MW};
- \node (fd) [def,orange, draw, below left=of origin] {FD};
- \node (jb) [def,orange, draw, below =of origin] {JB};
- \node (ue) [def,orange, draw, below right=of origin] {UE};
- \node (ms) [def,orange, draw, right=of ue] {MS};
- \node (bl) [def,orange, draw, right=of ms] {BL};
- \node (pepf) [def, draw, below=of bl]{PEP Foundation};
- \node (inria) [def, draw, below =of fd]{Inria};
- \node (bfh) [def, draw, below =of ue]{BFH};
-
-
- % grouping invividuals
- \node[def,draw,orange,fit=(ls)(mw)(fd)(jb)(ue)(ms)(bl)](group){};
-
- % comment right
-% \draw[line width=1pt,orange,decorate,decoration={amplitude=7pt,brace}]
-% (group.north east) -- (group.south east);
-% \node[right=of group,anchor=center,rotate=90]{Implementation partners};
-
-
- \tikzstyle{C} = [color=black, line width=1pt]
-
- %\draw [->, C] (cg) -- (fd) node [midway, above, sloped] (TextNode) {};
- %\draw [->, C] (cg) -- (jb) node [midway, above, sloped] (TextNode) {};
- %\draw [->, C] (cg) -- (ms) node [midway, above, sloped] (TextNode) {};
- %\draw [->, C] (cg) -- (ue) node [midway, above, sloped] (TextNode) {};
- %\draw [->, C] (ls) -- (bl) node [midway, above, sloped] (TextNode) {};
- \draw [<-, C] (cg) -- (gnu) node [midway, above, sloped] (TextNode) {};
- \draw [<-, C] (cg) -- (ashoka) node [midway, above, sloped] (TextNode) {};
- \draw [<-, C] (jb) -- (inria) node [midway, above, sloped] (TextNode) {};
- \draw [<-, C] (fd) -- (inria) node [midway, above, sloped] (TextNode) {};
- \draw [<-, C] (ls) -- (pep) node [midway, above, sloped] (TextNode) {};
- \draw [<-, C] (ue) -- (bfh) node [midway, above, sloped] (TextNode) {};
- \draw [<-, C] (bl) -- (pepf) node [midway, above, sloped] (TextNode) {};
-\end{tikzpicture}
-\end{center}
-\end{frame}
-
-
-\begin{frame}
-\frametitle{Dr. Christian Grothoff}
-\begin{itemize}
-\item Co-founder of Taler Systems SA
-\item 16+ years of experience in network security and privacy
-\item Software deployed in millions of computers and devices
-\item PhD in Computer Science, from UCLA, degrees in Mathematics and Chemistry
-\item GNU maintainer, GNU advisory board member
-\item Ashoka fellow, former Emmy-Noether scholar
-\item Lived and worked in USA, Germany, France and Switzerland
-\item Professor for network security at University of Applied Sciences, Bern
-\end{itemize}
-\end{frame}
-
-
-\begin{frame}
-\frametitle{Leon Schumacher}
-\begin{itemize}
-\item Co-founder of Taler Systems SA
-\item Co-founder of p$\equiv$p Security / pretty Easy privacy
-\item Founder of DigitalEklo
-\item Former Group CIO of Novartis
-\item Former Group CIO ArcelorMittal
-\end{itemize}
-\end{frame}
-
-
-\begin{frame}
- \frametitle{Senior Team \hfill \& \hfill advisory board \hfill}
- \begin{minipage}{5cm}
- \setlist[description]{leftmargin=1cm,labelindent=0cm}
- \begin{description}
- \item[Leon Schumacher]\ \\ co-founder, executive
- \item[Dr. Christian Grothoff]\ \\ co-founder, executive
- \item[Michael Widmer]\ \\ Lawyer, executive
- \item[Dr. Jeff Burdges]\ \\ PostDoc
- \item[Florian Dold]\ \\ PhD Student
- \end{description}
-
-\end{minipage}
- \begin{minipage}{5.5cm}
- {\tiny
-\begin{description}
- \item[Prof. Mikhail Atallah] \ \\
- Cryptographer, co-founder
- Arxan Technologies Inc.
- \item[Prof. Roberto Di Cosmo] \ \\
- Director IRILL
- \item[Greg Framke] \ \\
- CIO Manulife, \\
- former COO Etrade
- \item[Ante Gulam] \ \\
- Global Head of Information Security --- CISO \\
- MetaPack Group
- \item[Dr. Richard Stallman]\ \\
- Founder of the \\ \mbox{Free Software movement}
- \item[Chris Pagett] \ \\
- former Group Head Security/ \ \\
- Fraud/Geo Risk HSBC
- \item[Prof. Alex Pentland] \ \\
- MIT Media Lab
-\end{description}
-}
-\end{minipage}
-\vfill
-\includegraphics[height=0.1\textwidth]{team-images/leon-schumacher.jpg}
\hfill
-\includegraphics[height=0.1\textwidth]{team-images/christian-grothoff.jpg}\hfill
-\includegraphics[height=0.1\textwidth]{team-images/michael-widmer.jpg}\hfill
-\includegraphics[height=0.1\textwidth]{team-images/jeff-burdges.jpg}\hfill
-\includegraphics[height=0.1\textwidth]{team-images/florian-dold.jpg}\hfill
-\includegraphics[height=0.1\textwidth]{board-images/mja.jpg} \hfill
-\includegraphics[height=0.1\textwidth]{board-images/roberto-di-cosmo.jpg}
\hfill
-\includegraphics[height=0.1\textwidth]{board-images/greg-framke.jpg} \hfill
-\includegraphics[height=0.1\textwidth]{board-images/ante-gulam.jpg} \hfill
-\includegraphics[height=0.1\textwidth]{board-images/alex-pentland.jpg}
-%\note{Advisory board still under construction.}
-\end{frame}
-
-
-\begin{frame}
-\frametitle{History of Taler Systems SA}
-\begin{itemize}
-\item Software development started at TU Munich (2013)
-\item Grant from Renewable Freedom Foudation to develop core system (2014-2017)
-\item Inria decision to create startup in (2015)
-\item Company founded 2016 by Dr. Christian Grothoff and Leon Schumacher
-\item Copyright agreement with Inria, GNUnet e.V. and other stakeholders (2017)
-%\item Swedish community member informs us about e-Krona project (9'2017)
-%\item First hire from former Inria team (2018)
-\item Core team assisted by many volunteers ($\Rightarrow$ easy to grow)
-\end{itemize}
-\end{frame}
-
-
-% ``References and experience within the field''
-\begin{frame}
-\frametitle{Strategic partners}
-\begin{itemize}
-\item GNU Taler: We are a GNU package within the GNU project
-\item Hacker community: supported by CCC, Tor project, Enigmail, GnuPG,
Nitrokey, etc.
-\item Ashoka: Prof. Grothoff is part of a global network of social
entrepreneurs
-\item p$\equiv$p: Taler partners with pEp for e-mail integration
-\item Roots in academia: partners at TUM (I8), Inria (TAMIS team), ETH Zurich
(Helbing) and MIT (Media Lab)
-\item Roots in industry: Leon Schumacher, Group CIO of ArcelorMittal \&
Novartis
-\item Roots in banking: Michael Widmer, Chief of Staff of Adecco Group; Bank
Gutenberg, AIG, EUREX, Chicago Board of Trade/Eurex Alliance
-\end{itemize}
-\end{frame}
-
-
-\section{What is GNU Taler?}
-\begin{frame}{What is GNU Taler?}
- \vfill
- \begin{center}
-GNU Taler is an electronic instant payment system.
- \end{center}
- \begin{itemize}
- \item Uses electronic coins stored in {\bf wallets} on customer's device
- \item Think electronic {\bf cash}, with a few twists
- \item Pay in {\bf existing currencies} (i.e. EUR, USD, BTC)
-% or use it to create new regional currencies
- \end{itemize}
- \vfill
- \begin{center}
- Taler is {\bf not} a cryptocurrency.
- \end{center}
-\end{frame}
-
-
-\begin{frame}
-\frametitle{GNU Taler Overview}
-\begin{center}
-\begin{tikzpicture}
- \tikzstyle{def} = [node distance= 5em and 6.5em, inner sep=1em, outer
sep=.3em];
- \node (origin) at (0,0) {};
- \node (exchange) [def,above=of origin,draw]{Exchange};
- \node (customer) [def, draw, below left=of origin] {Customer};
- \node (merchant) [def, draw, below right=of origin] {Merchant};
- \node (auditor) [def, draw, above right=of origin]{Auditor};
-
- \tikzstyle{C} = [color=black, line width=1pt]
-
- \draw [<-, C] (customer) -- (exchange) node [midway, above, sloped]
(TextNode) {withdraw coins};
- \draw [<-, C] (exchange) -- (merchant) node [midway, above, sloped]
(TextNode) {deposit coins};
- \draw [<-, C] (merchant) -- (customer) node [midway, above, sloped]
(TextNode) {spend coins};
- \draw [<-, C] (exchange) -- (auditor) node [midway, above, sloped] (TextNode)
{verify};
-
-\end{tikzpicture}
-\end{center}
-\end{frame}
-% Demo here
-
-
-\begin{frame}
-\frametitle{Components in Depth}
-\begin{itemize}
-\item Exchange: payment service provider
- \begin{itemize}
- \item Wire plugins: integration with register based system
- \item Database plugins: persist cryptographic proofs
- \item Auditor: verifies correct operation
- \end{itemize}
-\item Wallet: customer user interface
- \begin{itemize}
- \item Browser extension
- \item E-mail client integration (future work)
- \item NFC payments (future work)
- \end{itemize}
-\item Merchant: shop
- \begin{itemize}
- \item Front end (custom)
- \item Backend (RESTful service, performs cryptography)
- \item Backend database: persists cryptographic proofs
- \item Back office Web service: access to business data
- \end{itemize}
-\item Protocol specification (generally JSON-based)
-\end{itemize}
-\end{frame}
-
-
-
-% ``References and experience within the field''
-\begin{frame}{Hardware requirements}
-\begin{itemize}
address@hidden Exchange:
- \begin{itemize}
- \item high-availablility data center (with replicated database),
- \item expected amortized average transaction costs $\approx$ \EUR{0.000001}
- \item transaction latency $\approx$ network RTT
- \end{itemize}
address@hidden Merchant:
- \begin{itemize}
- \item database to store contracts and cryptographic proofs
- \item minimal CPU, hardware and bandwidth requirements
- \item integration cost small due to reusable backend and backoffice
components
- \end{itemize}
address@hidden Customer:
- \begin{itemize}
- \item database (IndexedDB) to store coins, contracts and cryptographic proofs
- \item minimal CPU, hardware and bandwidth requirements
- \item DesignShift estimated \EUR{300,000} cost for design of
- mass production ready \EUR{10} NFC hardware wallet in CC format
- \end{itemize}
-\end{itemize}
-\end{frame}
-
-
-% ``References and experience within the field''
-\begin{frame}{Availability / Reliability / Off-line transactions}
-
- {\bf CAP theorem:}
-\begin{center}
- Consistency, Availability, Partition-Tolerance: pick two!
-\end{center}
-\vfill
-\begin{itemize}
-\item By default, Taler focuses on consistency and detects double-spending
online \\
- $\Rightarrow$ Network partitions impact availability
-\item Sharing coins via NFC while offline in principle possible \\
- $\Rightarrow$ Double spending detected late, receiver may be defrauded
-\end{itemize}
-\vfill
-\end{frame}
-
-
-\begin{frame}{Security}
-\begin{itemize}
-\item Each party must keep their private keys secure
-%\item Private keys are never disclosed by the protocol (not even during
payments)
-\item Losses are by design with party where keys were compromised
-\item Losses are bounded to:
-\begin{itemize}
-\item amount of coins carried in wallet (for consumer)
-\item volume of transactions during compromise (for merchant)
-\item amount of coins in circulation (for exchange)
-\end{itemize}
-\item Denomination key expiration used to limit risk
-\item Exchange operator typically has escrow account matching issued coins
-\end{itemize}
-\end{frame}
-
-
-\begin{frame}{Scalability}
- \begin{block}{By design}
- For exchange operator:
- \begin{itemize}
- \item linear scalability (via sharding) of database
- \item linear scalability of cryptographic operations
- \end{itemize}
- System also supports having multiple exchange operators.
- \end{block}
- \begin{block}{Implementation limitations}
- \begin{itemize}
- \item Auditor implementation is currently sequential
- \end{itemize}
- \end{block}
- All components are {\em free software} with {\em public specifications}.
-\end{frame}
-
-
-\begin{frame}{Interoperability}
- \begin{itemize}
- \item Database layer abstracted via interface
- \item Wire transfer layer abstracted via interface
- \item Open protocol specification
- \item RESTful JSON-based APIs
- \item Designed to operate well with HTTP(S)
- \item Recent changes to better support Apps and non-WebExtension compatible
browsers
- \item Core logic implemented in portable C code (exchange, merchant backend)
- \item Wallet-specific logic implemented in TypeScript \\
- ($\Rightarrow$ WebExtensions, React)
- \end{itemize}
-\end{frame}
-
-
-\begin{frame}{Reliability}
- \begin{itemize}
- \item Cryptographic constructions are well-understood
- \item Cryptographic primitives are state-of-the art
- \item Protocols have been peer-reviewed by various cryptographers
- \item State-of-the-art secure software development process
- \item Implementation has been (partially) subjected to security audits, more
planned
- \item World-class information security team
- \end{itemize}
-\end{frame}
-
-
-\begin{frame}{Anonymous transactions}
-\begin{itemize}
-\item Customer must identify when withdrawing via register system (KYC)
-\item Merchant must identify to receive via register system (AML)
-\item Merchant can be compelled to disclose terms of contract
-\item Customer can be {\em anonymous} when paying
-\item Multiple transactions of same customer are {\em unlinkable}
-\item Customer has proof of purchase
-\item Customer can voluntarily disclose identity, but not be compelled
-\item Exchange operator must be well-known and certified by auditor
-\item Auditor keys usually hard-coded in customer and merchant software
-\end{itemize}
-\end{frame}
-
-
-\begin{frame}{Identity Management}
- \begin{itemize}
- \item Taler provides electronic cash on top of register-based system
- \item Typically, customer and merchants have accounts in register-based
system \\
- $\Rightarrow$ Identification piggy-backs on register-based system
- \item Customer's wallets have a key to identify them
- \item Possible to send electronic coins to customer based on wallet key \\
- $\Rightarrow$ Possible to provide {\em welfare} to unbanked individuals
- \item Receiving Taler payments requires account in register (for taxability)
- \end{itemize}
-\end{frame}
-
-
-\begin{frame}{Accessibility}
- \begin{itemize}
- \item Anyone can customize wallet, as {\em protocols} enforce security!
- \item Wallets (HW, SW) will be customized to
- match accessibility requirements (children, disabled, elderly)
- \item Prototype was publicly demonstrated and explained by 10 year
- old kid at hacker conferences (videos available)
- \item Transaction speed is one click plus network RTT
- \item Avoiding customer authentication improves privacy and usability!
- \item Advisory board voiced ethical concerns with payments becoming
- too easy and need to integrate financial education with wallet.
- \end{itemize}
-\end{frame}
-
-
-\begin{frame}{Social Impact of Taler}
- \begin{center}
- \includegraphics[height=0.8\textheight]{social-impact.pdf}
- \end{center}
-\end{frame}
-
-
-\begin{frame}
- \frametitle{Possible outcomes (optimistic)}
- \begin{itemize}
- \item{Replace Mastercard/Visa/Paypal online} \\
- $\Rightarrow$ Cheaper transactions $\equiv$ 3\% reduction in VAT
- \item{Replace cash and credit cards} \\
- $\Rightarrow$ Faster business transactions in stores
- \item{Income via Taler is easily tracked by the government} \\
- $\Rightarrow$ Less corruption, less tax evasion possible
- \item{Nobody can track how you spend your money} \\
- $\Rightarrow$ Privacy for citizens! \\
- $\Rightarrow$ Industrial espionage defense for business!
- \end{itemize}
-\end{frame}
-
-
-\begin{frame}{}
- \vfill
- \begin{center}
- {Why should {\em Riksbank} be interested?}
- \end{center}
- \vfill
- \begin{center}
- \includegraphics[height=3cm]{illustrations/usmint.jpeg}
- \end{center}
- \vfill
- \begin{center}
- {Why not do {\em online} what they do {\em offline}?\footnote{Just better:
you can anonymously receive cash, but not Taler coins.}}
- \end{center}
-\end{frame}
-
-
-\begin{frame}{Greatest challenges for Taler Systems SA}
-\begin{itemize}
- \item Onboarding of customers \& merchants
- \item Banking license \& integration with register-based system
-% \item Funding for non-proprietary (FLOSS) software to establish a
-% payment systems commons without patents
- \end{itemize}
-\end{frame}
-
-
-\begin{frame}{PoC project}
- \begin{itemize}
- \item Taler Systems SA as technological solution provider (expertise)
- \item Riksbank as operator (escrow account, data center, RIX link)
- \item Key steps:
- \begin{itemize}
- \item Agreement on costs and responsibilities for PoC (1 M)
- \item Define specifications for small PoC / demonstrator (1 M)
- \item Setup PoC (1 M)
- \item Satisfy Riksbank technical security and performance requirements
(6-12 M)
- \item Identification of niche market and partners for public PoC launch
(4-6 M)
- \end{itemize}
- \end{itemize}
-\end{frame}
-
-
-
-\begin{frame}
- \begin{center}
-% \includegraphics[width=0.66\textwidth]{logo-2017-fr.pdf}
- \includegraphics[width=0.66\textwidth]{taler-logo-2018.pdf}
- \end{center}
- \vfill
- \hfill A GNU package
\end{frame}
\end{document}
-
-
-\section{Comparison}
-\begin{frame}{Comparison}
- \begin{center} \small
- \begin{tabular}{l||c|c|c|c|c}
- & Cash & Bitcoin & ZCash & Creditcard & GNU Taler \\ \hline
\hline
- Online &$-$$-$$-$ & ++ & ++ & + & +++ \\
\hline
- Offline & +++ & $-$$-$ & $-$$-$ & + & $-$$-$
\\ \hline
- Trans. cost & + & $-$$-$$-$ & $-$$-$$-$ & $-$ & ++ \\
\hline
- Speed & + & $-$$-$$-$ & $-$$-$$-$ & o & ++ \\
\hline
- Taxation & $-$ & $-$$-$ & $-$$-$$-$ & +++ & +++ \\
\hline
- Payer-anon & ++ & o & ++ & $-$$-$$-$ & +++ \\ \hline
- Payee-anon & ++ & o & ++ & $-$$-$$-$ & $-$$-$$-$ {\bf
(*)} \\ \hline
- Security & $-$ & o & o & $-$$-$ & ++ \\
\hline
- Conversion & +++ & $-$$-$$-$ & $-$$-$$-$ & +++ & +++ \\
\hline
- Libre & $-$ & +++ & +++ & $-$ $-$ $-$ & +++ \\
- \end{tabular}
- \end{center}
- {{\bf (*)} Not having payee-anonymity is a good thing as otherwise money
laundering
- becomes a real problem.}
-\end{frame}
-
-
-
-
-\section{The Problem}
-\begin{frame}{The Problem}
-
- 3D secure (``verified by visa'') is a nightmare:
- \begin{minipage}{5cm}
- \begin{itemize}
- \item Complicated process
- \item Shifts liability to consumer
- \item Significant latency
- \item Can refuse valid requests
- \item Legal vendors excluded
- \item No privacy for buyers
- \end{itemize}
- \end{minipage}
- \begin{minipage}{5cm}
- \includegraphics[width=\textwidth]{illustrations/cc3ds.pdf}
- \end{minipage}
- \vfill
- Online credit card payments will be replaced, but with what?
-\end{frame}
-
-
-\begin{frame}{The Problem}
-\vfill
- \begin{textblock*}{12cm}(0.5cm,1cm) % {block width} (coords)
- \begin{itemize}
- \item Global tech companies push oligopolies
- \item Privacy and federated finance are at risk
-% \item 30\% fees are conceivable
- \item Economic sovereingity is in danger
- \end{itemize}
-\end{textblock*}
-\begin{textblock*}{4cm}(3.5cm,5.2cm) % {block width} (coords)
- {\includegraphics[width=\textwidth]{competitor-logos/amazon.png}}
-\end{textblock*}
-\begin{textblock*}{2cm}(7cm,3cm) % {block width} (coords)
- {\includegraphics[width=\textwidth]{competitor-logos/alipay.jpeg}}
-\end{textblock*}
-\begin{textblock*}{2cm}(3cm,3.5cm) % {block width} (coords)
- {\includegraphics[width=\textwidth]{competitor-logos/paypal.jpeg}}
-\end{textblock*}
-\begin{textblock*}{2cm}(9cm,5cm) % {block width} (coords)
- {\includegraphics[width=\textwidth]{competitor-logos/applepay.jpeg}}
-\end{textblock*}
-\begin{textblock*}{2cm}(7.5cm,5.9cm) % {block width} (coords)
- {\includegraphics[width=\textwidth]{competitor-logos/samsungpay.jpeg}}
-\end{textblock*}
-\begin{textblock*}{1cm}(9.5cm,6.3cm) % {block width} (coords)
- {\includegraphics[width=\textwidth]{competitor-logos/android_pay.png}}
-\end{textblock*}
-\vfill
-\end{frame}
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