Christian's suggestions

1 files changed, 20 insertions, 17 deletions

diff --git a/comparison/comparison.tex b/comparison/comparison.tex
index 0b8fbcf..a7e79b4 100644
--- a/comparison/comparison.tex
+++ b/comparison/comparison.tex
@@ -34,9 +34,9 @@
 
 \begin{tabular}{r|ccccccccccccc}
 &
-\rot{Offline spending} &
+\rot{Instant enforcement} &
 \rot{Robust anonymity} &
-\rot{Key Expiration} &
+\rot{Key expiration} &
 %
 \rot{Traceability} &
 \rot{Transferability} &
@@ -46,48 +46,51 @@
 \rot{Deposit cost} &
 \rot{Change} &
 %
-\rot{Robustness} &
+\rot{Robust anonymity} &
 \rot{Receipts} &
 \rot{Endorsed} &
 \rot{Refunds}
 \\ \hline
 Taler
-&  \N & \Y & \Y
+&  \Y & \Y & \Y
 &  \N &  S & \Y
 &  $\log n$ & $\log n$ & ON
-&  \Y & \Y & \Y & \Y 
+&  \Y & \Y & \Y & Anon
 \\
 % TODO: Just omit this straw-man online Chaum in favor on HINDE
 Chaum Online
-&  \N &  ? & \Y?
+&  \Y &  ? & \Y?
 &  \N &  S & \N
 &  $\log n$ & $\log n$ & ON
-&  \Y? & \N & \N & \N
+&  \Y? & \N & \N & ?
 \\ 
 HINDE
-&  \N & \Y & \Y?
-&  \N &  S & \N?
+&  \Y? & \Y & \Y?
+&  \N &  S & \N
 &  $\log n$ & $\log n$ & ON
-&  \Y? & \N? & \N? & \N 
+&  \Y? & \N? & \N? & ? 
 \\
 Chaum Offline
-&  \Y &  ? & \Y?
+&  \N &  ? & \Y?
 &  \N &  S & \N?
 &  $\log n$ & $\log n$ & ON 
-&  \Y? & \N? & \N? & \N?
+&  \Y? & \N? & \N? & ?
 \\ \hline
 \end{tabular}
 
 \section{Criteria}
 
 \begin{itemize}
-  \item \textbf{Key Expiration.}
+  \item \textbf{Key expiration.}
     How/when do keys expire.  
     How do users exchange old coins for new coins?
-  \item \textbf{Offline spending.}  
-    Important historical property from when transactions were commonly
-    processed offline, possibly still useful in some situations.
-    Inherently makes anonymity brittle, so no longer a wise goal.
+  \item \textbf{Instant enforcement.}
+    In the past, payment schemes needed to function even when neither
+    party had connectivity, which makes double spending unavoidable.  
+    To address this, anonymous payment schemes were designed to
+    deanonymize the customer who double spent, but this approach makes
+    anonymity extremely brittle and requires expensive debt collection
+    operations.
   \item \textbf{Robust anonymity.}
     Anonymity is not trivially compromised by wallet spending errors,
     including restoring from backups and certain targeted attacks.