commit 5b648c48b3a1f37bb8f0449b32add5ca01e78f06 parent 6970a1303734ca4d8a963eaad8f38a1738e3f5f4 Author: Emmanuel Benoist <emmanuel.benoist@bfh.ch> Date: Mon, 21 Oct 2024 17:17:17 +0200 Workshop presented in KryptoTour in Lyon 19th of October 2024 Diffstat:
28 files changed, 1779 insertions(+), 0 deletions(-)
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r8,r8d,r8w,r8b,r9,r9d,r9w,r9b}} % etc. + + +\usepackage{color} +\definecolor{dkgreen}{rgb}{0,0.6,0} +\definecolor{gray}{rgb}{0.5,0.5,0.5} +\definecolor{mauve}{rgb}{0.58,0,0.82} +\lstset{ + basicstyle={\small\ttfamily}, + numberstyle=\tiny\color{gray}, + keywordstyle=\color{blue}, + commentstyle=\color{dkgreen}, + stringstyle=\color{mauve} +} + diff --git a/presentations/2024-lyon-kryptotour/images/Apple-Store-taler-app.png b/presentations/2024-lyon-kryptotour/images/Apple-Store-taler-app.png Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/QR-code-backend.demo.taler.net.png b/presentations/2024-lyon-kryptotour/images/QR-code-backend.demo.taler.net.png Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/QR-code-bank.demo.taler.net.png b/presentations/2024-lyon-kryptotour/images/QR-code-bank.demo.taler.net.png Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/QR-code-benoist.ch.png b/presentations/2024-lyon-kryptotour/images/QR-code-benoist.ch.png Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/QR-code-template-pizza.png b/presentations/2024-lyon-kryptotour/images/QR-code-template-pizza.png Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/bandera.jpg b/presentations/2024-lyon-kryptotour/images/bandera.jpg Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/google_play_GNU_Taler.jpg b/presentations/2024-lyon-kryptotour/images/google_play_GNU_Taler.jpg Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/sbfi.jpg b/presentations/2024-lyon-kryptotour/images/sbfi.jpg Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/taler.png b/presentations/2024-lyon-kryptotour/images/taler.png Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/triangle-taler.pdf b/presentations/2024-lyon-kryptotour/images/triangle-taler.pdf Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/images/triangle-taler.tex b/presentations/2024-lyon-kryptotour/images/triangle-taler.tex @@ -0,0 +1,48 @@ +\documentclass{standalone} +\usepackage{tikz} +\usepackage{ragged2e} +\usetikzlibrary{positioning,fit,patterns} + +\begin{document} +\begin{tikzpicture}[ + rect/.style={circle, draw=black}, + sym/.style={-stealth, shorten >= 2pt, shorten <= 2pt} + ] + % Taler payment system + \node[rect](1) {Exchange}; + \node[rect,below left=1.5cm and 0.7cm of 1](2) + {\small Utilisateur}; + \node[rect,below right=1.5cm and 0.7cm of 1](3) {Marchand}; + + \draw[sym] (1) -- node [midway, above, sloped] {\tiny + Retire des jetons} (2); + \draw[sym] (2) -- node [midway, above, sloped] {\tiny + Dépense des jetons} (3); + \draw[sym] (3) -- node [midway, above, sloped] {\tiny + Dépose des jetons} (1); + + % Settlement layer + \node[left=2cm of 1](E1){}; + \node[right=2cm of 1](E2){}; + \draw[sym] (E1) -- node [midway, above] {\tiny Dépose BTC/ETH} (1); + \draw[sym] (1) -- node [midway, above] {\tiny Retire BTC/ETH} (E2); + + % Auditor + %\node[above= of 1](A){Auditor}; + %\draw[sym] (A) -- node [midway, right] {\tiny Verify} (1); + + % Separator + \node[below=1mm of E1] (S1S) {}; + \node[below=1mm of E2] (S1E) {}; + \node[above=6mm of E1] (S2S) {}; + \node[above=6mm of E2] (S2E) {}; + + \draw[dotted] (S1S) -- (S1E); + \draw[dotted] (S2S) -- (S2E); + + \node[below right=-2mm and -1.5mm of S2S] + {\tiny{\emph{Couche de liaison avec la blockchain}}}; + \node[below right=-2mm and -1.5mm of S1S] + {\tiny{\emph{Système de paiements Taler}}}; + \end{tikzpicture} + \end{document} +\ No newline at end of file diff --git a/presentations/2024-lyon-kryptotour/logo-2021.svg b/presentations/2024-lyon-kryptotour/logo-2021.svg @@ -0,0 +1 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" width="670" height="300" viewBox="0 0 201 90"><g fill="#0042b3" fill-rule="evenodd" 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start here + +%First kill off navigation symbols, unwanted on transparencies +\beamertemplatenavigationsymbolsempty + +%Now set the proportion of greying out of non-current sections +%in toc with [current]; also choose bullet for toc. +\usetemplatetocsection[65!averagebackgroundcolor]{ + \color{beamerstructure}\raisebox{0.2ex}{\scriptsize{$\blacksquare$}}\quad\large\inserttocsection} +\usetemplatetocsubsection[65!averagebackgroundcolor]{\leavevmode\leftskip=2.5em\color{black}\inserttocsubsection\par} + +%Set subitem marker to be bullet + +%\usesubitemizeitemtemplate{\small\hbox{\color{beamerstructure}$\bullet$}} + + +\pgfdeclareimage[width=0.25cm]{mybullet}{./images/bullet-bfh.jpg} +\pgfdeclareimage[width=0.22cm]{mysmallbullet}{./images/bullet-bfh.jpg} + + +\useitemizeitemtemplate{\pgfuseimage{mybullet}} +\usesubitemizeitemtemplate{\pgfuseimage{mysmallbullet}} + + + +% title page + +% \usetitlepagetemplate{ +% \vbox{} +% \vfill +% \begin{centering} +% \insertinstitute\par\vskip3.0em +% {\huge\structure{XXXXX\inserttitle}}\par +% \ifx\insertsubtitle\@empty\else\vskip1em{\LARGE{\structure{\insertsubtitle}}}\par\fi +% \vskip2.5em\par +% \normalsize\insertauthor\vskip1em\par +% \insertdate\par\vskip2.0em +% \inserttitlegraphic\par +% \end{centering} +% \vfill +% } + +\usetitlepagetemplate{ +%\pgfuseimage{backgroundfirstpage} + \vbox{} + \vfill + \inserttitlegraphic\par\vskip4.5em + {\color{White}\huge\bf\inserttitle}\par\vskip1.5em + \par + \ifx\insertsubtitle\@empty\else\vskip1em{\color{White}\LARGE{\structure{\insertsubtitle}}}\par\fi + \vskip0.2em\par + {\color{White} \bf\it\LARGE\insertauthor}\vskip0.3em\par + {\color{White}\Large{\insertdate}}\par\vskip9.0em + \inserttitlegraphic\par + \vfill + } + +% frame title + + \useframetitletemplate{% + \vskip0.25em% + %\begin{centering} + \color{beamerstructure} + \huge\insertframetitle\par% + {\normalsize\structure{\insertframesubtitle}\par}% + %\end{centering} + } + +% new theorem style for definitions etc. + +\usetheoremtemplate{\begin{my@linedtext}} + {\end{my@linedtext}} + +\newsavebox{\my@algobox} +\newlength{\my@algoheight} +\newlength{\my@algodepth} +\newcommand{\my@algorule}[2]% + {\color{beamerstructure}\rule{#1}{#2}} %Balken! + +\RequirePackage{calc} +\newenvironment{my@linedtext}% + {\begin{block}{\inserttheoremname}~\\[-13pt]% + \begin{lrbox}{\my@algobox}% + \begin{minipage}[b]{\linewidth-7pt}\raggedright} + {\end{minipage}\end{lrbox}% + \settoheight{\my@algoheight}{\usebox{\my@algobox}}% + \settodepth{\my@algodepth}{\usebox{\my@algobox}}% + \addtolength{\my@algoheight}{\my@algodepth}% + \hspace*{1pt}\my@algorule{1pt}{\my@algoheight+5pt}% + \hspace*{5pt}\raise\my@algodepth\hbox{\usebox{\my@algobox}}% + \end{block}} + + +%% BIE1 add a frame for changing section +%% + +\AtBeginSection[] % Do nothing for \section* +{% +\setbeamertemplate{background}{\pgfuseimage{backgroundsection}} % +% +\frame<beamer>% +{% +%\frametitle{Outline} + +{\color{White}\huge \insertsection}% +%\tableofcontents[current] +}% +\setbeamertemplate{background}{\pgfuseimage{background}} % +} + +\AtBeginSubsection[] % Do nothing for \section* +{% +\setbeamertemplate{background}{\pgfuseimage{backgroundsubsection}} % +% +\frame<beamer>% +{% +%\frametitle{Outline} + +{\color{White}\huge \insertsubsection}% +%\tableofcontents[current] +}% +\setbeamertemplate{background}{\pgfuseimage{background}} % +} + + +\mode +<all> diff --git a/presentations/2024-lyon-kryptotour/slides-KrypoTour-Lyon.tex b/presentations/2024-lyon-kryptotour/slides-KrypoTour-Lyon.tex @@ -0,0 +1,539 @@ +\documentclass[aspectratio=169,t]{beamer} + +\input texinputs/taler-macros + +\usepackage{tikz} +\usepackage{ragged2e} +\usetikzlibrary{positioning,fit,patterns} + +% +% Presentation to the Kryptotour Lyon 19 Oct. 2024 in Lyon. +% Copyright (C) 2024 Emmanuel Benoist +% +% This program is free software: you can redistribute it and/or modify +% it under the terms of the GNU General Public License as published by +% the Free Software Foundation, either version 3 of the License, or +% (at your option) any later version. +% +% This program is distributed in the hope that it will be useful, +% but WITHOUT ANY WARRANTY; without even the implied warranty of +% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +% GNU General Public License for more details. +% +% You should have received a copy of the GNU General Public License +% along with this program. If not, see <http://www.gnu.org/licenses/>. +% + +% *Especially* edit these... +% \setbeameroption{show notes on second screen=right} % Both + +\newcommand{\SPEAKER}{Emmanuel Benoist} +\newcommand{\DATE}{19 octobre 2024} +\title{} +\date{19 octobre 2024} + + +\newcommand{\TITLE}{Workshop : vendre du pain en Bitcoin} +\newcommand{\SUB}{Kryptotour Lyon } +\newcommand{\AUTHOR}{Emmanuel Benoist} +\newcommand{\INST}{ https://www.benoist.ch/taler} + +% Do not edit this part +\title{\TITLE} +\subtitle{\SUB} +\date{\DATE} +\author[\SPEAKER]{\AUTHOR} +\institute{\INST} + +\usepackage{amsmath} +\usepackage{multimedia} +\usepackage[percent]{overpic} +\usepackage{url} +\usepackage{pifont} +\usepackage[absolute,overlay]{textpos} +\usepackage{listings} + +\usepackage{tikz, xcolor} +\usetikzlibrary{shapes,arrows,positioning} +\tikzset{ + %Define standard arrow tip + >=stealth', + %Define style for boxes + punkt/.style={ + rectangle, + rounded corners, + draw=black, very thick, + minimum width=3.5em, + minimum height=2em, + text centered}, + % Define arrow style + pull/.style={ + <->, + thick,draw=red, + shorten <=2pt, + shorten >=2pt,}, + % Define arrow style + pil/.style={ + ->, + thick, + shorten <=2pt, + shorten >=2pt,} +} + + +%\usepackage{tikz, xcolor} +%\usetikzlibrary{shapes,arrows} + + +\tikzstyle{decision} = [diamond, draw, text width=4.5em, + text badly centered, node distance=2cm, + inner sep=0pt] +\tikzstyle{block} = [rectangle, draw, text width=5em, + text centered, rounded corners, + minimum height=4em, node distance=3cm] +\tikzstyle{line} = [draw, -latex'] +\tikzstyle{lineeee} = [draw] +\tikzstyle{cloud} = [draw, ellipse, node distance=2.5cm, minimum height=2em] +\tikzstyle{walet} = [draw, rectangle, node distance=0.2cm, minimum height=2em] +\tikzstyle{reseau} = [node distance=0.2cm, minimum height=2em] +\tikzstyle{blank} = [node distance=1cm] + +\usetikzlibrary{shapes,arrows} +\usetikzlibrary{positioning} +\usetikzlibrary{calc} + + + + + +\begin{document} + + +\frame{\maketitle +} + +\begin{frame} + \frametitle{Télécharger ce workshop} + + \begin{center} + \includegraphics[width=0.3\textwidth]{./images/QR-code-benoist.ch.png} + + + \url{https://www.benoist.ch/taler} +\end{center} + +\end{frame} + + + + + + + + +\begin{frame} +\frametitle{Workshop : Vendre du pain en Bitcoin} +\tableofcontents + +\end{frame} + +\section{Limites des Cryptomonnaies} + +\begin{frame} + \frametitle{Les Cryptomonnaies (I)} + \begin{block}{Comment fonctionne une cryptomonnaie} + \begin{itemize} + \item Une transaction est ordonnée par un utilisateur + \item La transaction est transmise à tous les noeuds du réseau + \item Les transactions sont vérifiées + \item Les mineurs trouvent un consensus pour ajouter un ensemble + de transactions (un bloc) dans la Blockchain. + \end{itemize} + \end{block} +\end{frame} + +\begin{frame} + \frametitle{Les Cryptomonnaies (II)} +\begin{block}{Differences} + \begin{itemize} + \item Taille du réseau des noeuds (Bitcoin et Ethereum environ + 13~000 noeuds, Monero 2700); + \item Preuve de travail ou preuve d'enjeu; + \item Capitalisation : BTC 458 Mrd de dolars, ETH 216 Mrd de + dolars, Tether USDT 66 Mrd de dolars, USD Coin USDC 54 Mrd de + dolars, ... + \item Nombre de blocs par heure, + \item taille des blocs, + \item nombre maxi de + transaction à la seconde, etc. + \end{itemize} + \end{block} +\end{frame} + +\begin{frame} + \frametitle{Pro/Contra Blockchain} + \begin{block}{Avantages : la thésaurisation} + \begin{itemize} + \item Les blockchains sont prévues pour stocker à long terme + \item Cours stable (par rapport à beaucoup de monnaies) + \item Pas d'inflation (mecanisme anti-inflation implanté dans l'algorithme) + \end{itemize} + \end{block} + \begin{block}{Désavantage : paiements} + \begin{itemize} + \item Visa = 10~000 paiements à la seconde, Bitcoin= 10; + \item Temps d'ancrage dans la blockchain (de + quelques minutes pour ETH à 15mn pour BTC); + \item Temps de validation (de 1h pour quelques euros à 1 jour pour 1 million) + \end{itemize} + \end{block} +\end{frame} + +\begin{frame}{Les jetons} +\begin{block}{Solution : Jetonisation (tokenization)} + \begin{itemize} + \item Des jetons émis par une sorte de \emph{``banque centrale''}, + \item Echanges immédiats (validation par la banque) + \item Coûts de transaction minimes (dépend de la politique de la banque / banque + centrale). + \item Possibilité de micro-paiements. + \item Possible avec toutes les monnaies : CHF, EUR, Bitcoin, etc. + \end{itemize} +\end{block} +\end{frame} + + +% \section{Taler} + +% \begin{frame}{GNU-Taler } + +% \begin{block}{Cash-électronique} +% \begin{itemize} +% \item Le consommateurs retirent de l'argent électronique +% (anonymisé) depuis leur banque, +% \item Ils peuvent s'échanger librement cet argent, +% \item Ils peuvent payer à un commerçant, +% \item Le commerçant dépose l'argent électronique à sa banque et +% son compte est crédité. +% \end{itemize} +% \end{block} +% \begin{block}{Pas une cryptomonnaie} +% \begin{itemize} +% \item Pas de block chain, +% \item La banque est responsable des billets émis. +% \end{itemize} +% \end{block} +% \end{frame} + +% \begin{frame}{Taler : Vue d'ensemble} +% \begin{center} +% \begin{tikzpicture} +% \tikzstyle{def} = [node distance= 4.5em and 6em, inner sep=1em, outer sep=.3em]; +% \node (origin) at (0,0) {}; +% \node (exchange) [def,above=of origin,draw]{Banque}; +% \node (customer) [def, draw, below left=of origin] {Consommateur}; +% \node (merchant) [def, draw, below right=of origin] {Marchand}; +% \node (auditor) [def, draw, above right=of origin]{Auditeur}; + +% \tikzstyle{C} = [color=black, line width=1pt] + +% \draw [<-, C] (customer) -- (exchange) node [midway, above, sloped] +% (TextNode) {retire des jetons}; +% \draw [<-, C] (exchange) -- (merchant) node [midway, above, sloped] +% (TextNode) {depose les jetons}; +% \draw [<-, C] (merchant) -- (customer) node [midway, above, sloped] +% (TextNode) {dépense les jetons}; +% \draw [<-, C] (exchange) -- (auditor) node [midway, above, sloped] (TextNode) {vérifie}; + +% \end{tikzpicture} +% \end{center} +% \end{frame} + +% \begin{frame}{Comment ça marche? (I)} +% \begin{block}{Signature à l'aveugle (lors du retrait des jetons)} +% \begin{itemize} +% \item Le consommateur génère un jeton, +% \item Il anonymize le jeton, +% \item Il envoie le jeton anonymizé à la banque pour signature, +% \item La banque signe le jeton anonymizé, +% \item Le consommateur récupère son jeton dé-anonymizé et signé +% \end{itemize} +% \end{block} + +% \begin{block}{2 versions} +% \begin{itemize} +% \item Pour RSA : David Chaum +% \item Pour les courbes éliptiques : Clause Schnorr +% \end{itemize} +% \end{block} +% \end{frame} + +% \begin{frame}{Comment ça marche? (II)} +% \begin{block}{Protection de la sphère privée} +% \begin{itemize} +% \item La banque sait exactement quel marchand a reçu combien : +% taxable, pas de trafic, pas de blanchiement d'argent. +% \item Personne ne sait comment le client dépense son argent qui est +% intraçable (grâce à la signature à l'aveugle). +% \end{itemize} +% \end{block} +% \end{frame} + + + +\begin{frame}{GNU Taler}{Une sur-couche pour les transactions} + % \begin{tikzpicture}[remember picture,overlay] + % \node (N1)[above right=22mm and 56mm of current page.center] {\includegraphics[width=18mm]{./images/google_play_GNU_Taler.jpg}}; + % \node [below=-2mm of N1]{wallet.taler.net}; + % \end{tikzpicture} + \begin{center} + \begin{tikzpicture}[ + rect/.style={rectangle, draw=black, minimum width=30mm}, + sym/.style={stealth-stealth, shorten >= 2pt, shorten <= 2pt}, + block/.style={rectangle,draw=black,fill=black!10,minimum size=7mm}, + ] + + %% Architecture + \node(Tt){Taler}; + \node[rect,below=0cm of Tt](Tc){Exchange}; + \node[rect,fit={(Tt) (Tc)}](T){}; + + \node[rect,below=7mm of Tc](D) {\textbf{Depolymerizer}}; + + \node[rect,below=7mm of D](Bc){Node}; + \node[below=0cm of Bc](Bt){Blockchain}; + \node[rect,fit={(Bt) (Bc)}](B){}; + + \draw[sym] (T) -- (D); + \draw[sym] (D) -- (B); + + %% Blockchain + \node[block,right=8mm of B] (1){}; + \node[block,right=4mm of 1] (2){}; + \node[block,right=4mm of 2] (3){}; + \node[block,right=4mm of 3] (4){}; + \node[block,right=4mm of 4] (5){}; + \node[block,right=4mm of 5] (6){}; + \draw[-stealth] (1) -- (2); + \draw[-stealth] (2) -- (3); + \draw[-stealth] (3) -- (4); + \draw[-stealth] (4) -- (5); + \draw[-stealth] (5) -- (6); + + \node[left=4mm of 1] (S){}; + \node[right=4mm of 6] (E){}; + \draw[-stealth] (S) -- (1); + \draw[-stealth] (6) -- (E); + + %% Taler + \node[block, below right=-7.5mm and 20.5mm of T] (off){Off-chain transactions}; + \node[above=-0.5mm of off] {\includegraphics[height=7mm]{./images/taler.png}}; + + %% Depolymerization + \node[right=12mm of D] {\small{Credit}}; + \node[right=55mm of D] {\small{Debit}}; + \draw[dashed,-stealth] (1.north) |- (off.west); + \draw[dashed,-stealth] (off.east) -| (6.north); + + %% Separation + \draw[dotted] (-2.1,-1.3) -- (9,-1.3); + \draw[dotted] (-2.1,-2.5) -- (9,-2.5); + \end{tikzpicture} + \end{center} +\end{frame} + +\begin{frame}{GNU Taler}{Overview} + \begin{columns} + \begin{column}{0.45\textwidth} +\begin{center} + \includegraphics[width=\textwidth]{./images/triangle-taler} +\end{center} +\end{column} + \begin{column}{0.45\textwidth} + + \begin{block}{Système de paiement Taler} + \begin{itemize} + \item Tokenization + \item Signatures à l'aveugle : anonymat du payeur, + connaissance du marchand + \end{itemize} + \end{block} + \begin{block}{Implémentations} + \begin{itemize} + \item Monnaies scriptures (CHF, EUR, HUF), + \item BTC et ETH + \end{itemize} + \end{block} + + \end{column} + \end{columns} + \end{frame} + +\begin{frame}{Taler : plan de déploiement} + + \begin{block}{En Suisse} + \begin{itemize} + \item \textit{Netzbon} : Monnaie locale à Bâle, en cours de + déploiement + \item \textit{Interne à la BFH} : Automate à snacks (bientôt + aussi automate à café). + \item \textit{CHF dans toute le Suisse} : en cours de déploiement + \end{itemize} + \end{block} + \begin{block}{Reste du monde} + \begin{itemize} + \item \textit{Projet NGI-Taler} avec une banque allemande (pour un + déploiement en 2025 dans la zone euro), et une banque hongroise. + \item \textit{Depolymerizer} Paiements en Bitcoins à travers + Taler (serveur beta, novembre 2024). + \end{itemize} + \end{block} +\end{frame} + +\section{Installer l'application client} +\begin{frame} + \frametitle{Installer l'application client} + \begin{columns} + \begin{column}{0.45\textwidth} + \begin{block}{Google Play Store} + \end{block} + \begin{center} +\includegraphics[width=0.7\textwidth]{./images/google_play_GNU_Taler.jpg} +\end{center} +\end{column} +\begin{column}{0.45\textwidth} + \begin{block}{Apple Store} + \end{block} + \begin{center} + \includegraphics[width=0.7\textwidth]{./images/Apple-Store-taler-app.png} + \end{center} + \end{column} +\end{columns} +\end{frame} + +\section{Retirer des pieces} +\begin{frame} + \frametitle{Retirer des pièces} + \begin{columns} + \begin{column}{0.45\textwidth} + \begin{block}{Creez un compte dans notre banque} + \end{block} + \begin{center} + \includegraphics[width=0.5\textwidth]{./images/QR-code-bank.demo.taler.net.png} + \url{https://bank.demo.taler.net/} + +\end{center} +\end{column} +\begin{column}{0.45\textwidth} + \begin{block}{Transférez de l'argent vers le portefeuille} + + \begin{itemize} + \item Générez un retrait \texttt{``to a Taler wallet''} + \item Scannez le QRCode dans votre application. + \end{itemize} + \end{block} + \end{column} +\end{columns} +\end{frame} + + +\section{Transfert de pair à pair} +\begin{frame} + \frametitle{Transfert de pair à pair} + \begin{block}{Dans l'application : Envoyer de l'argent} + \begin{itemize} + \item Cliquez sur le solde de votre portemonnaie, + \item Ensuite \texttt{``Envoyer des fonds''}, + \item Tapez un montant puis \texttt{``Vers un autre + portefeuille''}, + \item Demandez à votre voisin de scanner ce QR-code. + \end{itemize} + \end{block} + \begin{block}{Dans l'application : Demandez de l'argent} + \begin{itemize} + \item Cliquez sur le solde de votre portemonnaie, + \item Ensuite \texttt{``Recevoir des fonds''}, + \item Tapez un montant puis \texttt{``Facture d'un autre + portefeuille''}, + \item Demandez à votre voisin de scanner ce QR-code. + \end{itemize} + \end{block} +\end{frame} + +\section{Créer un compte vendeur} +\begin{frame} + \frametitle{Créer un compte vendeur} + + \begin{columns} + \begin{column}{0.45\textwidth} + \begin{block}{Sur le site Merchant backend} + \end{block} + \begin{center} + \includegraphics[width=0.5\textwidth]{./images/QR-code-backend.demo.taler.net.png} + \url{https://backend.demo.taler.net/instances/sandbox/} + + Access Token : \texttt{sandbox} +\end{center} +\end{column} +\begin{column}{0.45\textwidth} + \begin{block}{Initialisez votre magasin / faire une première livraison} + + \begin{itemize} + \item Créez un produit dans l'inventaire + \item Créez une nouvelle ``\emph{Order}'' (Commande) + \item Faites payer votre voisin (il scanne le QRCode) + \item Attendez la confirmation + \end{itemize} + \end{block} + \begin{block}{Faire de la vente à emporter} + + \begin{itemize} + \item Créez une nouvelle ``\emph{template}'' + \item Imprimez cette template sur une feuille. + \item Scannez le QRCode dans votre application. + \end{itemize} + \end{block} + + \end{column} +\end{columns} + +\end{frame} + + + +\begin{frame} +\frametitle{Questions?} +\begin{block}{Contact: emmanuel.benoist@bfh.ch} +\end{block} +\begin{block}{Web : https://www.benoist.ch} +\end{block} +\end{frame} + +\begin{frame}{Acknowledgements} + + \begin{minipage}{0.45\textwidth} \ \\ + {\tiny Funded by the European Union (Project 101135475).} + + \begin{center} + \includegraphics[width=0.5\textwidth]{./images/bandera.jpg} + \end{center} + \end{minipage} + \hfill + \begin{minipage}{0.45\textwidth} + {\tiny Funded by SERI (HEU-Projekt 101135475-TALER).} + + \begin{center} + \includegraphics[width=0.65\textwidth]{./images/sbfi.jpg} + \end{center} + \end{minipage} + + \vfill + + {\tiny Views and opinions expressed are however those of the author(s) only + and do not necessarily reflect those of the European Union. Neither the + European Union nor the granting authority can be held responsible for + them.} +\end{frame} + + +\end{document} diff --git a/presentations/2024-lyon-kryptotour/texinputs/header-drawings.tex b/presentations/2024-lyon-kryptotour/texinputs/header-drawings.tex @@ -0,0 +1,44 @@ +\documentclass[varwidth, border = 5 mm]{standalone} +% \usepackage{tikz-cd} +% \usetikzlibrary{shapes.geometric} +\usepackage{amsmath} + +\usepackage{tikz, xcolor} +\usetikzlibrary{shapes,arrows,positioning} +\tikzset{ + %Define standard arrow tip + >=stealth', + %Define style for boxes + punkt/.style={ + rectangle, + rounded corners, + draw=black, very thick, + minimum width=3.5em, + minimum height=2em, + text centered}, + % Define arrow style + pull/.style={ + <->, + thick,draw=red, + shorten <=2pt, + shorten >=2pt,}, + % Define arrow style + pil/.style={ + ->, + thick, + shorten <=2pt, + shorten >=2pt,} +} +\tikzstyle{decision} = [diamond, draw, text width=4.5em, + text badly centered, node distance=2cm, + inner sep=0pt] +\tikzstyle{block} = [rectangle, draw, text width=5em, + text centered, rounded corners, + minimum height=4em, node distance=3cm] +\tikzstyle{line} = [draw, -latex'] +\tikzstyle{lineeee} = [draw] +\tikzstyle{cloud} = [draw, ellipse, node distance=2.5cm, minimum height=2em] +\tikzstyle{walet} = [draw, rectangle, node distance=0.2cm, minimum height=2em] +\tikzstyle{reseau} = [node distance=0.2cm, minimum height=2em] +\tikzstyle{blank} = [node distance=1cm] + diff --git a/presentations/2024-lyon-kryptotour/texinputs/header-exercises.tex b/presentations/2024-lyon-kryptotour/texinputs/header-exercises.tex diff --git a/presentations/2024-lyon-kryptotour/texinputs/header-slides.tex b/presentations/2024-lyon-kryptotour/texinputs/header-slides.tex @@ -0,0 +1,34 @@ +\documentclass[ + authorontitle=true, + aspectratio=169 + ]{beamer} + + +%\usepackage[main=ngerman]{babel} + +% The following is only necessary for compatibility with versions of pdftex older than April 2018 +\usepackage{iftex} +\ifPDFTeX +\usepackage[utf8]{inputenc} +\fi + + +%Makros für Formatierungen der Doku +%Im Allgemeinen nicht notwendig! +\let\code\texttt + +\usepackage{graphicx} + +\usepackage{listings} + +%\subtitle{Version 0.4} +\author[E. Benoist]{Emmanuel Benoist} +\institute{GNU-Taler} + +%Activate the output of a frame number: +\setbeamertemplate{page number in head/foot}[framenumber] + + +%\AtBeginSection{\sectionpage} +\author{Emmanuel Benoist} +\date{Fall Term 2023/2024} diff --git a/presentations/2024-lyon-kryptotour/texinputs/images/bandera.jpg b/presentations/2024-lyon-kryptotour/texinputs/images/bandera.jpg Binary files differ. diff --git a/presentations/2024-lyon-kryptotour/texinputs/images/logo-NGI_TALER.ai b/presentations/2024-lyon-kryptotour/texinputs/images/logo-NGI_TALER.ai @@ -0,0 +1,168 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!-- Created with Inkscape (http://www.inkscape.org/) --> + +<svg + version="1.1" + id="svg2137" + width="553.96533" + height="170.64532" + viewBox="0 0 553.96533 170.64532" + sodipodi:docname="logo_NGI_TALER.ai" + inkscape:version="1.2.2 (b0a8486541, 2022-12-01)" + xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" + 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+\vskip 1cm +{\Large\textsf{\@title~\@nr}\par}% +\vskip 1cm +\end{center}% +\null} +\fancypagestyle{plain}{ +\lhead{\small\textsf{\@title~\@nr}} +\rhead{\small\textsf{Page \thepage}} +\lfoot{\raisebox{2pt}{\small\textsf{\@course}}} +\cfoot{\raisebox{2pt}{\small\textsf{\@semester}}} +\rfoot{\raisebox{2pt}{\small\textsf{\@author}}} +\renewcommand\headrulewidth{0.5pt} +\renewcommand\footrulewidth{0.5pt}} +\makeatother +% +\setlength\textheight{23cm} +\setlength\textwidth{16cm} +\setlength\oddsidemargin{0mm} +\setlength\topmargin{-10mm} +\setlength\headsep{12mm} +\setlength\footskip{18mm} +% +% +\pagestyle{plain} +\hypersetup{colorlinks=true,urlcolor= blue,linkcolor=blue} +% +\newcounter{assign} +\newenvironment{assignment}[1]{\subsubsection*{\textsf{\stepcounter{assign}\theassign.~#1}}}{} +\newenvironment{assignment*}[1]{\subsubsection*{\textsf{#1}}}{} + diff --git a/presentations/2024-lyon-kryptotour/texinputs/taler-macros.tex b/presentations/2024-lyon-kryptotour/texinputs/taler-macros.tex @@ -0,0 +1,103 @@ +\usepackage[utf8]{inputenc} + +% fonts and colors +\usepackage[defaultfam,tabular,lining]{montserrat} + +\setbeamercolor{normal text}{fg=black,bg=white} +\setbeamercolor{alerted text}{fg=red!50!black} +\setbeamercolor{example text}{fg=green!50!black} + +\setbeamercolor{title}{fg=white} +\setbeamerfont{title}{size=\Huge} +\setbeamerfont{title}{series=\bfseries} + +\setbeamercolor{subtitle}{fg=white} +\setbeamerfont{subtitle}{size=\Large} + +\setbeamercolor{author}{fg=white} +\setbeamerfont{author}{size=\Large} + +\setbeamercolor{institute}{fg=white} +\setbeamerfont{institute}{size=\large} + +\setbeamercolor{date}{fg=black} +\setbeamerfont{date}{size=\large} + +\setbeamercolor{frametitle}{fg=white} +\setbeamerfont{frametitle}{size=\LARGE} +\setbeamerfont{framesubtitle}{size=\large} + +\makeatletter +\setbeamertemplate{frametitle}{% + \vbox{}\vskip-0.5em% + \begin{beamercolorbox}[wd=.7\paperwidth]{frametitle} + \usebeamerfont{frametitle}% + \strut\insertframetitle\strut\par% + \end{beamercolorbox} + \ifx\insertframesubtitle\@empty% + \vskip.9em + \else% + \vskip-0.3em + \begin{beamercolorbox}[wd=.68\paperwidth]{frametitle} + \usebeamerfont{framesubtitle}% + \strut\insertframesubtitle\strut\par% + \end{beamercolorbox} + \fi +} +\makeatother + +\usepackage{tikz} +\usetikzlibrary{calc,intersections,positioning,fadings,through} + +% footline +\setbeamertemplate{navigation symbols}{} +\setbeamertemplate{footline}{% + \leavevmode% + \includegraphics[height=0.7cm]{texinputs/images/logo-NGI_TALER_Bold.png} + \hfill + \SPEAKER + \hfill + \TITLE + \hfill + \insertframenumber + \vskip0pt% +} + +% background + +\usepackage{xcolor} +\definecolor{left}{RGB}{0,66,179} + +\setbeamertemplate{title page} +{%\leavemode% + \begin{beamercolorbox}[wd=\the\paperwidth, ht=\the\paperheight,ignorebg,center]{} + \begin{tikzpicture}[overlay, remember picture] + \fill [left color=left, right color=left!50!black] (current page.north west) -- (current page.north east) -- ($(current page.north east)+(0,-6.5)$) -- ($(current page.north west)+(5,-6.5)$) -- ($(current page.north west)+(4.5,-6.8)$) -- ($(current page.north west)+(4,-6.5)$) -- ($(current page.north west)+(0,-6.5)$); + \end{tikzpicture} + \end{beamercolorbox}% + \vspace*{-8cm} + + \begin{beamercolorbox}[sep=8pt,left]{title} + {\usebeamerfont{title}\inserttitle\par}% + {\usebeamerfont{subtitle}\insertsubtitle\par}% + \end{beamercolorbox}% + \vskip1em\par + \begin{beamercolorbox}[sep=8pt,left]{author} + \usebeamerfont{author}\insertauthor + \end{beamercolorbox} + \begin{beamercolorbox}[sep=8pt,left]{institute} + \usebeamerfont{inst}\insertinstitute\\ + \end{beamercolorbox}% + + \begin{beamercolorbox}[sep=5pt,left]{date} + \usebeamerfont{date}\insertdate + \end{beamercolorbox} + \vspace*{2.5cm} +} + +\setbeamertemplate{background canvas} +{%\leavemode% + \begin{tikzpicture}[overlay, remember picture] + \fill [left color=left, right color=left!50!black] (current page.north west) -- (current page.north east) -- ($(current page.north east)+(0,-2)$) -- ($(current page.north west)+(5,-2)$) -- ($(current page.north west)+(4.5,-2.3)$) -- ($(current page.north west)+(4,-2)$) -- ($(current page.north west)+(0,-2)$); + \end{tikzpicture} +}
