From f0dd542b4b7d934731bf864c3721afab832e46a3 Mon Sep 17 00:00:00 2001 From: Jeff Burdges Date: Thu, 10 Nov 2016 17:19:00 +0100 Subject: [PATCH] Offline patmenr first paragraph Requested by Christian, not sire if I heit what he wanted. --- doc/paper/taler.tex | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/doc/paper/taler.tex b/doc/paper/taler.tex index 89c7e7e82..088ca25ef 100644 --- a/doc/paper/taler.tex +++ b/doc/paper/taler.tex @@ -1174,14 +1174,15 @@ deanonymize citizens. \subsection{Offline Payments} \label{sec:offline} -Chaum's original proposals for anonymous digital cash avoided the need -for online interactions with the exchange to detect double spending by -providing a means to deanonymize customers involved in -double-spending. This is problematic as the exchange or the merchant -still need out-of-band means to recover funds from the customer, which -may be infeasible in practice. Furthermore, a customer may -accidentally deanonymize himself, for example by double-spending a -coin after restoring from backup. +Anonymous digital cash schemes since Chaum were frequently designed +to allow the merchant to be offline during the transaction, +by providing a means to deanonymize customers involved in +double-spending. We consider this problematic as either the +exchange or the merchant still requires an out-of-band +means to recover funds from the customer, an expensive and +unreliable proposition. Worse, there are unacceptable risks that +a customer may accidentally deanonymize herself, for example by +double-spending a coin after restoring from backup. \subsection{Merchant Tax Audits}