commit 28a808c373f7230fec28ace916bd5cc6560832b7
parent 6a42e60cfa2c27c25675e10d448c5abc57062efc
Author: Tanja Lange <tanja@hyperelliptic.org>
Date: Wed, 22 Jan 2025 00:16:48 +0100
much more technical abstract covering all topics
Diffstat:
1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/doc/usenix-security-2025/paper/donau-paper.tex b/doc/usenix-security-2025/paper/donau-paper.tex
@@ -51,8 +51,27 @@
\maketitle
\begin{abstract}
- This paper provides an overview of functional requirements for
- privacy-preserving donations, keeping in mind the need for tax authorities to verify the proper source of donations prior to granting tax benefits. As a second contribution it provides a technical design to realize privacy-preserving and yet tax-deductable donations in GNU Taler, for which it presents the protocol specification and implementation details for the Donation Authority (Donau).
+GNU Taler is a privacy-friendly payment protocol that offers full anonymity to
+the customer, making their purchases anonymous and unlinkable not only to
+third parties but even to merchants and banks involved. While this payment
+mechanism obviously can be used to make donations,, the anonymity guarantees
+seem at odds with the desire of donors to receive tax benefits fro their
+charitable donations.
+
+The main contribution of this paper is the technical design and implementation
+of a system that achieves privacy for the donor while providing them with a
+proof that they donated to a charity. The charity does not learn the identity
+of the donor and the tax authority does not learn which charities received the
+donations. Our design introduces anew entity, the Donation Authority, which we
+call Donau. This entity may be operated by the tax authority, and even then
+they do not learn the identities of the charities and only get a summary
+statement of all donations made by the tax payer in a certain timeframe.
+
+The paper is based on our analysis of functional requirements for
+privacy-preserving donations and of further desirable properties which
+amount to requirements for some countries. We show how to realize some
+of them within our design while showing how others could be
+instantiated with significant changes or additions to the design.
\end{abstract}
%\reportkeywords{GNU Taler, Tax-deductible Donations. Donau, Donation Authority,
@@ -69,7 +88,7 @@
\ifodd0
-\section*{Acknowledgements}
+\section*{Acknowledgments}
This work was funded by ANONYMIZED.
%in part by the European Commision through the
