taler-www

commit 76b7d04932a0b69c853e64bbb0385d3e4c1e1e3c
parent 7d31e2eddbc1a847e8a1b724a21d9e2f46e24244
Author: Christian Grothoff <christian@grothoff.org>
Date:   Tue,  9 Aug 2022 11:14:08 +0200

esorics paper published

Diffstat:
A
static/papers/esorics2022-age-restriction.pdf
 | 
0

M
template/news/2022-09.html.j2
 | 
28
++++++++++++++++++++++------
M
www.yml
 | 
15
+++++++++++++--

3 files changed, 35 insertions(+), 8 deletions(-)
diff --git a/static/papers/esorics2022-age-restriction.pdf b/static/papers/esorics2022-age-restriction.pdf
Binary files differ.
diff --git a/template/news/2022-09.html.j2 b/template/news/2022-09.html.j2
@@ -1,9 +1,25 @@
-{% extends "common/news.j2" %}
-{% block body_content %}
-<h1>2022-07: GNU Taler presentations and demonstration at the CBDC Forum in Frankfurt</h1>
+{% extends "common/news.j2" %} {% block body_content %}
+
+<h1>2022-9: &quot;Zero-Knowledge Age Restriction for GNU Taler&quot;</h1>
+
+<h2>Abstract</h2>
 <p>
-  We will be presenting and demonstrating GNU Taler at the
-  <a href="https://cbdc-forum.tech/">CBDC Forum</a> in Frankfurt
-  on August 26th.
+  We propose a design for a privacy-friendly method of age restriction in
+  e-commerce that is aligned with the principle of subsidiarity.  The design
+  is presented as an extension of a privacy-friendly payment protocol with a
+  zero-knowledge scheme that cryprographically augments coins for this purpose.
+  Our scheme enables buyers to prove to be of sufficient age for a particular
+  transaction without disclosing it.  Our modification preserves the privacy and
+  security properties of the payment system such as the anonymity of minors as
+  buyers as well as unlinkability of transactions.  We show how our scheme can be
+  instantiated with ECDSA as well with a variant of EdDSA, respectively, and how
+  it can be integrated with the GNU Taler payment system.  We provide formal
+  proofs and implementation of our proposal.  Key performance measurements for
+  various CPU architectures and implementations are presented.
 </p>
+<h2>Download links</h2>
+<ul>
+ <li><a href="/papers/esorics2022-age-restriction.pdf">PDF (English)</a></li>
+</ul>
+
 {% endblock body_content %}
diff --git a/www.yml b/www.yml
@@ -29,8 +29,8 @@ langs_full:
 meetingnotes:
 newsposts:
   - page: 2022-09.html
-    date: 2022-07-01
-    title: "GNU Taler presentations and demonstration at the CBDC Forum in Frankfurt"
+    date: 2022-08-09
+    title: "Zero-Knowledge Age Restriction for GNU Taler"
   - page: 2022-08.html
     date: 2022-06-26
     title: "Datenschutzfreundliches digitales Bezahlen"
@@ -152,6 +152,17 @@ videoslist:
 paperslist:
   - year: 2022
     authors:
+      - Özgür Kesim
+      - Christian Grothoff
+      - Florian Dold
+      - Martin Schanzenbach
+    name: "Zero-Knowledge Age Restriction for GNU Taler"
+    kind: article
+    url:
+    url_html:
+    url_pdf: "papers/esorics2022-age-restriction.pdf"
+  - year: 2022
+    authors:
       - Martin Summer
       - Hannes Hermanky
     name: "A digital euro and the future of cash"