esorics paper published

1 files changed, 22 insertions, 6 deletions

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-{% 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 %}