From 7d31e2eddbc1a847e8a1b724a21d9e2f46e24244 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 26 Jun 2022 17:04:10 +0200
Subject: draft CBDC news

---
 template/news/2022-09.html.j2 | 9 +++++++++
 www.yml                       | 7 +++++--
 2 files changed, 14 insertions(+), 2 deletions(-)
 create mode 100644 template/news/2022-09.html.j2

diff --git a/template/news/2022-09.html.j2 b/template/news/2022-09.html.j2
new file mode 100644
index 00000000..eb7046e3
--- /dev/null
+++ b/template/news/2022-09.html.j2
@@ -0,0 +1,9 @@
+{% extends "common/news.j2" %}
+{% block body_content %}
+<h1>2022-07: GNU Taler presentations and demonstration at the CBDC Forum in Frankfurt</h1>
+<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.
+</p>
+{% endblock body_content %}
diff --git a/www.yml b/www.yml
index b7f78aa1..2bde4f9b 100644
--- a/www.yml
+++ b/www.yml
@@ -28,6 +28,9 @@ langs_full:
   tr: Türkçe
 meetingnotes:
 newsposts:
+  - page: 2022-09.html
+    date: 2022-07-01
+    title: "GNU Taler presentations and demonstration at the CBDC Forum in Frankfurt"
   - page: 2022-08.html
     date: 2022-06-26
     title: "Datenschutzfreundliches digitales Bezahlen"
@@ -39,13 +42,13 @@ newsposts:
     title: "GNU Taler Scalability"
   - page: 2022-05.html
     date: 2022-05-25
-    title: "Who comes after us? The correct mindset for designing a Central Bank Digital Currency"
+    title: "Paper: Who comes after us? The correct mindset for designing a Central Bank Digital Currency"
   - page: 2022-03.html
     date: 2022-03-11
     title: "Central Bank Accounts are Dangerous and Unnecessary: A critique of two papers"
   - page: 2022-02.html
     date: 2022-02-21
-    title: Adding Schnorr's Blind Signatures to Taler
+    title: "Adding Schnorr's Blind Signatures to Taler"
   - page: 2022-01.html
     date: 2022-02-05
     title: Come una banca centrale dovrebbe emettere una moneta digitale
-- 
cgit v1.2.3


From 76b7d04932a0b69c853e64bbb0385d3e4c1e1e3c Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Tue, 9 Aug 2022 11:14:08 +0200
Subject: esorics paper published

---
 static/papers/esorics2022-age-restriction.pdf | Bin 0 -> 415798 bytes
 template/news/2022-09.html.j2                 |  28 ++++++++++++++++++++------
 www.yml                                       |  15 ++++++++++++--
 3 files changed, 35 insertions(+), 8 deletions(-)
 create mode 100644 static/papers/esorics2022-age-restriction.pdf

diff --git a/static/papers/esorics2022-age-restriction.pdf b/static/papers/esorics2022-age-restriction.pdf
new file mode 100644
index 00000000..03dc4553
Binary files /dev/null and b/static/papers/esorics2022-age-restriction.pdf differ
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"
@@ -150,6 +150,17 @@ newsposts:
     title: Launching taler.net
 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
-- 
cgit v1.2.3