commit d4b024ee868daac56eef669a1e2e9bd667aedfdf
parent 32b0e9314fd72490f21fae6cc0b2366314476fd4
Author: Matyja Lukas Adam <lukas.matyja@students.bfh.ch>
Date: Tue, 3 Oct 2023 00:28:33 +0200
[doc] some corrections
Diffstat:
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/doc/flows/main.tex b/doc/flows/main.tex
@@ -38,7 +38,7 @@
The NONCE is used to uniquely distinguish DU of the same value ("create a fresh DU"). Otherwise the DONAU would refuse DUs containing donations of equal amount to the same charity, since this would be seen as "double spending". To simplify the thought process, the NONCE can be thought of as a "DU ID".
\begin{align}
- m := \langle H(TAXID, SALT), NONCE \rangle
+ DU := \langle H(TAXID, SALT), NONCE \rangle
\end{align}
% TODO example
@@ -94,27 +94,27 @@ The NONCE is used to uniquely distinguish DU of the same value ("create a fresh
\item increments the current year amount of the charity by the total amount of the BDR, if the increment does not exceed the annual limit.
\item blind signs (using RSA/Schnorr) all the DUs
\begin{align}
- s_1' = m_1'^{(d_{E1})} \emph{mod ?} \\
- s_2' = m_2'^{(d_{E2})} \emph{mod ?}
+ BS1_{sk/k1} = BDU1^{(d_{E1})} \emph{mod ?} \\
+ BS2_{sk/k4} = BDU2^{(d_{E4})} \emph{mod ?}
\end{align}
\item sends back the blind signed DUs to the charity
\end{enumerate}
\item The charity transmits the blind signed DUs to the donor.
\item The donor unblinds the signatures.
\begin{align}
- s_1 = s_1' \cdot b^{-1} \mod n_1 \\
- s_2 = s_2' \cdot b^{-1} \mod n_2
+ S1_{sk/k1} = BS1_{sk/k1} \cdot b^{-1} \mod n_1 \\
+ S2_{sk/k4} = BS2_{sk/k4} \cdot b^{-1} \mod n_2
\end{align}
\end{enumerate}
\subsection{Step 4: Donor sends DR to DONAU, DONAU sends back donation statement (DS)}
\begin{enumerate}
- \item The donor sends the collection of all $(mi, si, kj)$ to the DONAU. The DR is always sent to the DONAU right after the donor has unblinded the DUs. The corresponding year is sent with.
- \item For each $(mi, si, kj)$ The DONAU...
+ \item The donor sends the collection of all $(DUi, Si, kj)$ to the DONAU. The DR is always sent to the DONAU right after the donor has unblinded the DUs. The corresponding year is sent with.
+ \item For each $(DUi, Si, kj)$ The DONAU...
\begin{itemize}
\item verifies that $kj$ is one of the valid public keys corresponding to the year indicated.
- \item verifies if $si$ is a correct signature with the corresponding secret key.
+ \item verifies if $Si$ is a correct signature with the corresponding secret key.
\item verifies that the hash of the TAXID and the salt is the same as in other DUs (how to solve the problem with multiple wallets?)
\item verifies that the nonce is different from each ever used nonce of this donor for the corresponding year.
\item if all of this is the case, it adds the amount corresponding to the public key to the total donation amount for the year.
