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[donau] branch master updated: Chapter 3: small edits
From: |
gnunet |
Subject: |
[donau] branch master updated: Chapter 3: small edits |
Date: |
Tue, 21 Jan 2025 18:40:28 +0100 |
This is an automated email from the git hooks/post-receive script.
jonathan-levin pushed a commit to branch master
in repository donau.
The following commit(s) were added to refs/heads/master by this push:
new d0e0156 Chapter 3: small edits
d0e0156 is described below
commit d0e01568f6fe2bb475f45b4d5f8e8dbf617f44e0
Author: Jonathan <ondesmartenot@riseup.net>
AuthorDate: Wed Jan 22 01:40:10 2025 +0800
Chapter 3: small edits
---
doc/usenix-security-2025/paper/technicaldesign.tex | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/doc/usenix-security-2025/paper/technicaldesign.tex
b/doc/usenix-security-2025/paper/technicaldesign.tex
index 5d71140..b266a73 100644
--- a/doc/usenix-security-2025/paper/technicaldesign.tex
+++ b/doc/usenix-security-2025/paper/technicaldesign.tex
@@ -226,7 +226,7 @@ The charity sends the array $\vec{\mu}$ of BKPs and their
signature $\sigma_c$ t
\subsection{Donau generates donation
receipt}\label{donau_creates_donation_receipt}
When the Donau receives a signed set of BKPs from a charity, it verifies the
charity's signature.
It then checks that no legal restrictions are being violated.
-If not, the Donau increments its record of the charity's total receipts by the
+If none are, the Donau increments its record of the charity's total receipts
by the
total amount of the donation, i.e., the sum of the denominations used in the
BKPs.
The Donau then blindly signs all BUDIs using the Donation Unit private keys
@@ -266,7 +266,7 @@ These donation receipts are stored on the donor's device.
\subsection{Donor requests an annual donation statement from
Donau}\label{donor_requests_a_donation_statement_from_the_donau}
In order for the donor to claim a tax deduction,
-the donor needs to obtain a final \textbf{Donation Statement} which can be
sent to the tax authority.
+the donor needs to obtain a final donation statement which can be sent to the
tax authority.
The donor sends their saved donation receipts $\{r_1, \ldots, r_k\}$,
accumulated throughout the year, to the Donau.
This can be done multiple times during the year, but the receipts are not
automatically in order to achieve
\emph{unlinkability} between the \emph{issuance} of the receipts (which
happens at the time of donation) and their \emph{submission} for the Donation
Statement.
@@ -288,8 +288,7 @@ identified as $\DI$.
Importantly, the Donau does not see signatures of the charities the donor
donated to, so it does not know where the donor spent money.
They also only see a collection of common denominations, so they are unable to
correlate total donation amounts per charity.
-Finally, the receipts are unblinded, so the Donau has never seen these
signatures before.
-This makes the receipts unlinkable from when they were originally signed by
the Donau.
+Finally, the receipts are unblinded, so they are unlinkable to any signature
the Donau has seen before.
The Donau then generates a signature over the total \texttt{amount} of all
receipts, the current \texttt{year} and the Donor Identifier.
This results in a final signature called the \textbf{Donation Statement},
which the Donau returns to the donor:
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