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authorChristian Grothoff <christian@grothoff.org>2022-08-09 11:14:08 +0200
committerChristian Grothoff <christian@grothoff.org>2022-08-09 11:14:08 +0200
commit76b7d04932a0b69c853e64bbb0385d3e4c1e1e3c (patch)
treeb4e158662a76f2dfb571615cc3cd825ad7b64cbc
parent7d31e2eddbc1a847e8a1b724a21d9e2f46e24244 (diff)
downloadwww-76b7d04932a0b69c853e64bbb0385d3e4c1e1e3c.tar.gz
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esorics paper published
-rw-r--r--static/papers/esorics2022-age-restriction.pdfbin0 -> 415798 bytes
-rw-r--r--template/news/2022-09.html.j228
-rw-r--r--www.yml15
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diff --git a/static/papers/esorics2022-age-restriction.pdf b/static/papers/esorics2022-age-restriction.pdf
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diff --git a/template/news/2022-09.html.j2 b/template/news/2022-09.html.j2
index eb7046e3..27148b0a 100644
--- 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
index 2bde4f9b..7ee0895d 100644
--- 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"