[taler-marketing] branch master updated: update cbt slides

[gnunet]

This is an automated email from the git hooks/post-receive script.

grothoff pushed a commit to branch master
in repository marketing.

The following commit(s) were added to refs/heads/master by this push:
     new 0aa5191  update cbt slides
0aa5191 is described below

commit 0aa5191a8c9d75ad1a6a0ea938acbf56a2c27408
Author: Christian Grothoff <grothoff@gnunet.org>
AuthorDate: Fri Dec 15 12:19:28 2023 +0800

    update cbt slides
---
 presentations/comprehensive/cbt.tex | 374 ++++--------------------------------
 1 file changed, 36 insertions(+), 338 deletions(-)

diff --git a/presentations/comprehensive/cbt.tex 
b/presentations/comprehensive/cbt.tex
index 658edb7..2422f89 100644
--- a/presentations/comprehensive/cbt.tex
+++ b/presentations/comprehensive/cbt.tex
@@ -204,7 +204,24 @@
 \title{GNU Taler}
 %\subtitle{}
 
-\setbeamertemplate{navigation symbols}{  
\includegraphics[width=1cm]{tud-logo.pdf} 
\includegraphics[width=0.4cm]{logo-esen.pdf} 
\includegraphics[width=1cm]{logo-GlsBank.pdf} 
\includegraphics[width=0.6cm]{logo-MagNetBank.pdf} 
\includegraphics[width=0.4cm]{logo-ps.pdf} 
\includegraphics[width=0.4cm]{logo-nlnet.pdf} 
\includegraphics[width=0.4cm]{logo-HomoDigitalis.pdf} 
\includegraphics[width=0.4cm]{logo-codeblau.pdf}  
\includegraphics[width=1.4cm]{logo-tue.pdf}  \includegraphics[width=0.6cm] [...]
+\setbeamertemplate{navigation symbols}{
+  \includegraphics[width=0.4cm]{logo-bfh.pdf}
+  \includegraphics[width=1.6cm]{fub.pdf}
+  \includegraphics[width=1cm]{tud-logo.pdf}
+  \includegraphics[width=1.4cm]{logo-tue.pdf}
+  \includegraphics[width=1cm]{inria.pdf}
+  \includegraphics[width=1cm]{logo-GlsBank.pdf}
+  \includegraphics[width=0.6cm]{logo-MagNetBank.pdf} \
+  \includegraphics[width=0.6cm]{logo-visualvest.pdf}
+  \includegraphics[width=0.4cm]{ashoka.png}
+  \includegraphics[width=0.4cm]{logo-esen.pdf}
+  \includegraphics[width=0.4cm]{gnu.png}
+  \includegraphics[width=0.4cm]{logo-HomoDigitalis.pdf}
+  \includegraphics[width=0.4cm]{logo-nlnet.pdf}
+  \includegraphics[width=0.4cm]{logo-codeblau.pdf}
+  \includegraphics[width=0.4cm]{logo-ps.pdf}
+  \includegraphics[width=1cm]{taler-logo-2021-inkscape.pdf}
+  \hfill}
 %\setbeamercovered{transparent=1}
 
 \author[C. Grothoff]{J. Burdges, F. Dold, {\bf C. Grothoff}, M. Stanisci}
@@ -251,34 +268,6 @@
 
 \section{GNU Taler: Introduction}
 
-\begin{frame}
-  \vfill
-  \begin{center}
-    {\bf GNU Taler: Introduction}
-  \end{center}
-  \vfill
-\end{frame}
-
-
-\begin{frame}{GNU Taler}
-  \vfill
-  \begin{center}
-    {\huge {\bf Digital} cash, made \textbf{socially responsible}.}
-  \end{center}
-  \vfill
-  \begin{center}
-  \includegraphics[scale=0.3]{taler-logo-2021-inkscape.pdf}
-  \end{center}
-  \vfill
-  \begin{center}
-    Privacy-Preserving, Practical, Taxable, Free Software, Efficient
-  \end{center}
- \vfill
- \vfill
-\ %
-\end{frame}
-
-
 \begin{frame}{What is Taler?}
   \framesubtitle{\url{https://taler.net/en/features.html}}  \noindent
 Taler is
@@ -396,6 +385,20 @@ positives in fraud detection
   \vfill
 \end{frame}
 
+
+\begin{frame}{A Bachelor's Thesis Video}
+  \begin{center}
+    \movie[%scale=0.6,
+           autostart,
+           poster]
+           {
+               
\includegraphics[height=0.6\textwidth,width=0.8\textwidth]{white.png}
+           }
+          {cs-movie.mp4}
+  \end{center}
+\end{frame}
+
+
 \begin{frame}{How does it work?}
 We use a few ancient constructions:
   \begin{itemize}
@@ -409,238 +412,7 @@ But of course we use modern instantiations.
 \end{frame}
 
 
-\begin{frame}{Exchange setup: Create a denomination key (RSA)}
-   \begin{minipage}{6cm}
-    \begin{enumerate}
-    \item Pick random primes $p,q$.
-    \item Compute $n := pq$, $\phi(n) = (p-1)(q-1)$
-    \item Pick small $e < \phi(n)$ such that
-          $d := e^{-1} \mod \phi(n)$ exists.
-    \item Publish public key $(e,n)$.
-    \end{enumerate}
-  \end{minipage}
-  \begin{minipage}{6cm}
-  \begin{tikzpicture}
- \tikzstyle{def} = [node distance=1em and 1em, inner sep=0em, outer sep=.3em];
-    \node (origin) at (0,0) {\includegraphics[width=0.2\textwidth]{dice.pdf}};
-    \node (primes) [draw=none, below = of origin] at (0,0) {$(p, q)$};
-    \node (seal) [def, draw=none, below left=of 
primes]{\includegraphics[width=0.15\textwidth]{seal.pdf}};
-    \node (hammer) [def, draw=none, below right=of 
primes]{\includegraphics[width=0.15\textwidth]{hammer.pdf}};
-
-    \tikzstyle{C} = [color=black, line width=1pt]
-
-    \draw [<-, C] (primes) -- (origin) node [midway, above, sloped] (TextNode) 
{};
-    \draw [<-, C] (seal) -- (primes) node [midway, above, sloped] (TextNode) 
{};
-    \draw [<-, C] (hammer) -- (primes) node [midway, above, sloped] (TextNode) 
{};
-  \end{tikzpicture}
-%  \includegraphics[width=0.4\textwidth]{seal.pdf}
-  \end{minipage}
-\end{frame}
-
-
-\begin{frame}{Merchant: Create a signing key (EdDSA)}
-  \begin{minipage}{6cm}
-    \begin{itemize}
-  \item pick random $m \mod o$ as private key
-  \item $M = mG$ public key
-  \end{itemize}
-  \end{minipage}
-  \begin{minipage}{6cm}
-  \begin{tikzpicture}
-   \tikzstyle{def} = [node distance= 1em and 1em, inner sep=0em, outer 
sep=.3em];
-    \node (origin) at (0,0) {\includegraphics[width=0.2\textwidth]{dice.pdf}};
-    \node (m) [draw=none, below = of origin] at (0,0) {$m$};
-    \node (seal) [draw=none, below=of m]{M};
-   \tikzstyle{C} = [color=black, line width=1pt]
-
-    \draw [<-, C] (m) -- (origin) node [midway, above, sloped] (TextNode) {};
-    \draw [<-, C] (seal) -- (primes) node [midway, above, sloped] (TextNode) 
{};
-  \end{tikzpicture}
-  \end{minipage}
-  \parbox[t]{3cm}{{\bf Capability:} $m \Rightarrow$ }
-  
\raisebox{\dimexpr-\height+\baselineskip}{\includegraphics[width=0.1\textwidth]{merchant-sign.pdf}}
-\end{frame}
-
-
-\begin{frame}{Customer: Create a planchet (EdDSA)}
-  \begin{minipage}{8cm}
-  \begin{itemize}
-  \item Pick random $c \mod o$ private key
-  \item $C = cG$ public key
-  \end{itemize}
-  \end{minipage}
-  \begin{minipage}{4cm}
-  \begin{tikzpicture}
-   \tikzstyle{def} = [node distance= 1em and 1em, inner sep=0em, outer 
sep=.3em];
-    \node (origin) at (0,0) {\includegraphics[width=0.2\textwidth]{dice.pdf}};
-    \node (c) [draw=none, below = of origin] at (0,0) {$c$};
-    \node (planchet) [draw=none, below=of 
c]{\includegraphics[width=0.4\textwidth]{planchet.pdf}};
-    \tikzstyle{C} = [color=black, line width=1pt]
-
-    \draw [<-, C] (c) -- (origin) node [midway, above, sloped] (TextNode) {};
-    \draw [<-, C] (planchet) -- (c) node [midway, above, sloped] (TextNode) {};
-  \end{tikzpicture}
-  \end{minipage}
-  \parbox[t]{3cm}{{\bf Capability:} $c \Rightarrow$ }
-  
\raisebox{\dimexpr-\height+\baselineskip}{\includegraphics[width=0.1\textwidth]{planchet-sign.pdf}}
-\end{frame}
-
-
-\begin{frame}{Customer: Blind planchet (RSA)}
-  \begin{minipage}{6cm}
-    \begin{enumerate}
-    \item Obtain public key $(e,n)$
-    \item Compute $f := FDH(C)$, $f < n$.
-    \item Pick blinding factor $b \in \mathbb Z_n$
-    \item Transmit $f' := f b^e \mod n$
-    \end{enumerate}
-  \end{minipage}
-  \begin{minipage}{6cm}
-  \begin{tikzpicture}
-   \tikzstyle{def} = [node distance= 2em and 0.5em, inner sep=0em, outer 
sep=.3em];
-    \node (origin) at (0,0) {\includegraphics[width=0.2\textwidth]{dice.pdf}};
-    \node (b) [def, draw=none, below = of origin] at (0,-0.2) {$b$};
-    \node (blinded) [def, draw=none, below right=of 
b]{\includegraphics[width=0.2\textwidth]{blinded.pdf}};
-    \node (planchet) [def, draw=none, above right=of 
blinded]{\includegraphics[width=0.15\textwidth]{planchet.pdf}};
-    \node (exchange) [node distance=4em and 0.5em, draw, below =of 
blinded]{Exchange};
-    \tikzstyle{C} = [color=black, line width=1pt]
-
-    \draw [<-, C] (b) -- (origin) node [midway, above, sloped] (TextNode) {};
-    \draw [<-, C] (blinded) -- (planchet) node [midway, above, sloped] 
(TextNode) {};
-    \draw [<-, C] (blinded) -- (b) node [midway, above, sloped] (TextNode) {};
-    \draw [<-, C] (exchange) -- (blinded) node [midway, above, sloped] 
(TextNode) {{\small transmit}};
-  \end{tikzpicture}
-  \end{minipage}
-\end{frame}
-
-
-\begin{frame}{Exchange: Blind sign (RSA)}
-   \begin{minipage}{6cm}
-    \begin{enumerate}
-    \item Receive $f'$.
-    \item Compute $s' := f'^d \mod n$.
-    \item Send signature $s'$.
-    \end{enumerate}
-   \end{minipage}
-  \begin{minipage}{6cm}
-  \begin{tikzpicture}
-   \tikzstyle{def} = [node distance= 2em and 0.5em, inner sep=0em, outer 
sep=.3em];
-    \node (hammer) [def, draw=none] at (0,0) 
{\includegraphics[width=0.15\textwidth]{hammer.pdf}};
-    \node (signed) [def, draw=none, below left=of 
hammer]{\includegraphics[width=0.2\textwidth]{sign.pdf}};
-    \node (blinded) [def, draw=none, above left=of 
signed]{\includegraphics[width=0.15\textwidth]{blinded.pdf}};
-    \node (customer) [node distance=4em and 0.5em, draw, below =of 
signed]{Customer};
-    \tikzstyle{C} = [color=black, line width=1pt]
-
-    \draw [<-, C] (signed) -- (hammer) node [midway, above, sloped] (TextNode) 
{};
-    \draw [<-, C] (signed) -- (blinded) node [midway, above, sloped] 
(TextNode) {};
-    \draw [<-, C] (customer) -- (signed) node [midway, above, sloped] 
(TextNode) {{\small transmit}};
-  \end{tikzpicture}
-  \end{minipage}
-\end{frame}
-
-
-\begin{frame}{Customer: Unblind coin (RSA)}
-  \begin{minipage}{6cm}
-   \begin{enumerate}
-    \item Receive $s'$.
-    \item Compute $s := s' b^{-1} \mod n$ % \\
-    % ($(f')^d = (f b^e)^d = f^d b$).
-    \end{enumerate}
-   \end{minipage}
-  \begin{minipage}{6cm}
-  \begin{tikzpicture}
-   \tikzstyle{def} = [node distance= 2em and 0.5em, inner sep=0em, outer 
sep=.3em];
-    \node (b) [def, draw=none] at (0,0) {$b$};
-    \node (coin) [def, draw=none, below left=of 
b]{\includegraphics[width=0.2\textwidth]{coin.pdf}};
-    \node (signed) [def, draw=none, above left=of 
coin]{\includegraphics[width=0.15\textwidth]{sign.pdf}};
-    \tikzstyle{C} = [color=black, line width=1pt]
-
-    \draw [<-, C] (coin) -- (b) node [midway, above, sloped] (TextNode) {};
-    \draw [<-, C] (coin) -- (signed) node [midway, above, sloped] (TextNode) 
{};
-  \end{tikzpicture}
-  \end{minipage}
-\end{frame}
-
-
-\begin{frame}{Customer: Build shopping cart}
-  \begin{center}
-  \begin{tikzpicture}
-   \tikzstyle{def} = [node distance= 1em and 1em, inner sep=0em, outer 
sep=.3em];
-    \node (origin) [draw=none] at (0,0) 
{\includegraphics[width=0.2\textwidth]{cart.pdf}};
-    \node (merchant) [node distance=4em and 0.5em, draw, below =of 
origin]{\includegraphics[width=0.2\textwidth]{shop.pdf}};
-    \tikzstyle{C} = [color=black, line width=1pt];
-    \draw [<-, C] (merchant) -- (origin) node [midway, above, sloped] 
(TextNode) {{\small transmit}};
-  \end{tikzpicture}
-  \end{center}
-\end{frame}
-
-
-\begin{frame}{Merchant: Propose contract (EdDSA)}
-   \begin{minipage}{6cm}
-   \begin{enumerate}
-    \item Complete proposal $D$.
-    \item Send $D$, $EdDSA_m(D)$
-    \end{enumerate}
-   \end{minipage}
-  \begin{minipage}{6cm}
-  \begin{tikzpicture}
-   \tikzstyle{def} = [node distance=2em and 0.5em, inner sep=0em, outer 
sep=.3em];
-    \node (cart) [def, draw=none] at (0,0) 
{\includegraphics[width=0.15\textwidth]{cart.pdf}};
-    \node (proposal) [def, draw=none, below right=of 
cart]{\includegraphics[width=0.5\textwidth]{merchant_propose.pdf}};
-    \node (customer) [node distance=4em and 0.5em, draw, below =of 
proposal]{Customer};
-    \tikzstyle{C} = [color=black, line width=1pt];
-    \node (sign) [def, draw=none, above right=of proposal] {$m$};
-    \tikzstyle{C} = [color=black, line width=1pt]
-
-    \draw [<-, C] (proposal) -- (sign) node [midway, above, sloped] (TextNode) 
{};
-    \draw [<-, C] (proposal) -- (cart) node [midway, above, sloped] (TextNode) 
{};
-    \draw [<-, C] (customer) -- (proposal) node [midway, above, sloped] 
(TextNode) {{\small transmit}};
-  \end{tikzpicture}
-  \end{minipage}
-\end{frame}
-
-
-\begin{frame}{Customer: Spend coin (EdDSA)}
-  \begin{minipage}{6cm}
-   \begin{enumerate}
-    \item Receive proposal $D$, $EdDSA_m(D)$.
-    \item Send $s$, $C$, $EdDSA_c(D)$
-    \end{enumerate}
-   \end{minipage}
-  \begin{minipage}{6cm}
-  \begin{tikzpicture}
-   \tikzstyle{def} = [node distance=2em and 0.4em, inner sep=0em, outer 
sep=.3em];
-    \node (proposal) [def, draw=none] at (0,0) 
{\includegraphics[width=0.15\textwidth]{merchant_propose.pdf}};
-    \node (contract) [def, draw=none, below right=of 
cart]{\includegraphics[width=0.3\textwidth]{contract.pdf}};
-    \node (c) [def, draw=none, above=of contract] {$c$};
-    \node (merchant) [node distance=4em and 0.5em, draw, below=of 
contract]{Merchant};
-    \node (coin) [def, draw=none, right=of 
contract]{\includegraphics[width=0.2\textwidth]{coin.pdf}};
-    \tikzstyle{C} = [color=black, line width=1pt]
-
-    \draw [<-, C] (contract) -- (c) node [midway, above, sloped] (TextNode) {};
-    \draw [<-, C] (contract) -- (proposal) node [midway, above, sloped] 
(TextNode) {};
-    \draw [<-, C] (merchant) -- (contract) node [midway, above, sloped] 
(TextNode) {{\small transmit}};
-    \draw [<-, C] (merchant) -- (coin) node [midway, below, sloped] (TextNode) 
{{\small transmit}};
-  \end{tikzpicture}
-  \end{minipage}
-\end{frame}
-
-
-\begin{frame}{Merchant and Exchange: Verify coin (RSA)}
-   \begin{minipage}{6cm}
- \begin{equation*}
-   s^e \stackrel{?}{\equiv} FDH(C) \mod n
-   \end{equation*}
-   \end{minipage}
-  \begin{minipage}{6cm}
-  \begin{minipage}{0.2\textwidth}
-    \includegraphics[width=\textwidth]{coin.pdf}
-  \end{minipage}
-  $\stackrel{?}{\Leftrightarrow}$
-  \begin{minipage}{0.2\textwidth}
-    \includegraphics[width=\textwidth]{seal.pdf}
-  \end{minipage}
-  \end{minipage}
+\begin{frame}{Double Spending}
   \vfill
   The exchange does not only verify the signature, but also
   checks that the coin was not double-spent.
@@ -655,15 +427,6 @@ But of course we use modern instantiations.
 
 \section{Offline payments}
 
-\begin{frame}
-  \vfill
-  \begin{center}
-    {\bf Offline payments}
-  \end{center}
-  \vfill
-\end{frame}
-
-
 \begin{frame}{Requirements: Online vs. Offline Digital Currencies}
 \framesubtitle{\url{https://taler.net/papers/euro-bearer-online-2021.pdf}}
 \begin{itemize}
@@ -682,22 +445,7 @@ But of course we use modern instantiations.
 \end{frame}
 
 
-\begin{frame}{Fully Offline Payments {\bf (WiP)}}
-\framesubtitle{\url{https://docs.taler.net/design-documents/030-offline-payments.html}}
-Many central banks today demand offline capabilities for digital payment 
solutions.
-\vfill
-\noindent
-Three possible approaches:
-\begin{enumerate}
-  \item Trust-based offline payments (has counterparty and/or privacy risks)
-  \item Full HSM Taler wallet (has hardware costs)
-  \item Light-weight HSM balance register
-\end{enumerate}
-\vfill
-\end{frame}
-
-
-\begin{frame}{Partially Offline Payments with GNU Taler\footnote{Joint work 
with Emmanuel Benoist, Priscilla Huang and Sebastian Marchano}}
+\begin{frame}{Partially Offline Payments with GNU Taler}
 
 \begin{center}
 \resizebox{8cm}{7cm}{
@@ -902,28 +650,6 @@ Designed and implemented an age restriction scheme with 
the following goals:
 \end{frame}
 
 
-\begin{frame}{Joomla! Taler payment plugin}
-\begin{minipage}{6cm}
-  \begin{itemize}
-    \item Joomla! is an e-commerce platform
-    \item Joomla! payment plugin enables payments via GNU Taler
-    \item Features include:
-      \begin{itemize}
-      \item Trivial configuration
-      \item Support for refunds
-      \item Full internationalization
-      \end{itemize}
-    \item Joomla! and its plugins are implemented in PHP
-  \end{itemize}
-\end{minipage}
-% FIXME: add screenshots
-%\begin{minipage}{5cm}
-%  \includegraphics[width=4cm]{screenshots/woocommerce-cart.png}
-%  \includegraphics[width=4cm]{screenshots/woocommerce-settings.png}
-%  \end{minipage}
-\end{frame}
-
-
 \begin{frame}{Point-of-Sale App for Android}
 
 \begin{minipage}{7cm}
@@ -990,29 +716,13 @@ Designed and implemented an age restriction scheme with 
the following goals:
 \end{frame}
 
 
-\begin{frame}{Depolymerization}
-  Depolymerization is a bridge between GNU Taler and blockchains,
-  making Taler a layer 2 system for crypto-currencies (like Lightning).
-
-  \begin{itemize}
-    \item Currently implemented for Bitcoin and Ethereum
-          crypto-currencies, with the DLTs as the ``RTGS''
-    \item Provides same API to Exchange as LibEuFin
-%   \item Transaction rate and speed limited by the underlying blockchain
-    \item Implemented in Rust
-  \end{itemize}
-  \begin{center}
-      \url{https://bitcoin.ice.bfh.ch/}
-  \end{center}
-\end{frame}
-
 
 \section{Performance Experiments}
 
 \begin{frame}
   \vfill
   \begin{center}
-    {\bf Performance}\footnote{Joint work with Marco Boss}
+    {\bf Performance}
   \end{center}
   \vfill
 \end{frame}
@@ -1035,17 +745,6 @@ Designed and implemented an age restriction scheme with 
the following goals:
 \end{frame}
 
 
-\begin{frame}{A Bachelor's Thesis Video}
-  \begin{center}
-    \movie[%scale=0.6,
-           autostart,
-           poster]
-           {
-               
\includegraphics[height=0.6\textwidth,width=0.8\textwidth]{white.png}
-           }
-          {cs-movie.mp4}
-  \end{center}
-\end{frame}
 
 
 \section{Future Work \& Conclusion}
@@ -1096,6 +795,7 @@ Designed and implemented an age restriction scheme with 
the following goals:
   \item {\bf The GNU Project}: \\ Integration into FLOSS software
   \item {\bf Anastasis SARL}: \\ Distributed key escrow for backups
   \item {\bf Fraunhofer Gesellschaft}: \\ Identity management \& SSI \& 
wallet-to-wallet communication
+  \item {\bf Chelpis (Ming Chih)}: Regional support partner for Taiwan ({\bf 
new}, \url{https://www.taiwannews.com.tw/en/news/4958467})
 %  \item {\bf Fiscaltrust GmbH}: \\ Point-of-sale integration ({\bf new})
   \end{description}
 \end{frame}
@@ -1136,8 +836,6 @@ Designed and implemented an age restriction scheme with 
the following goals:
     \item Parallel verification of RSA signatures on GPUs
     \item Tax-deductable receipts for donations to charities 
     \item Unlinkable anonymous subscriptions and discount tokens
-    \item Support for illiterate and innumerate users\footnote{Background: 
\url{https://myoralvillage.org/}}
-          (not yet funded)
   \end{itemize}
 \end{frame}
 

-- 
To stop receiving notification emails like this one, please contact
gnunet@gnunet.org.