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Florian Dold 2016-11-09 14:44:50 +01:00
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doc/paper/taler.tex
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@ -178,6 +178,9 @@ provider~\cite{martens2015practical}. The customer should also not be
expected to withdraw exact change, as doing so reduces anonymity due expected to withdraw exact change, as doing so reduces anonymity due
to the obvious correlation. to the obvious correlation.
% FIXME: explain the logarithmic claim! It's only
% true for a certain denomination structure.
% This denomination structure potentially introduces privacy risks
Taler solves the problem of giving change by introducing a new {\em Taler solves the problem of giving change by introducing a new {\em
refresh protocol} allowing for ``divisible'' transactions with refresh protocol} allowing for ``divisible'' transactions with
amortized costs logarithmic in the amount of value being transacted. amortized costs logarithmic in the amount of value being transacted.
@ -243,6 +246,7 @@ disintermediated transactions.
%\subsection{Chaum-style electronic cash} %\subsection{Chaum-style electronic cash}
% FIXME: what limitations? substantiate!
Chaum~\cite{chaum1983blind} proposed a digital payment system that Chaum~\cite{chaum1983blind} proposed a digital payment system that
would provide some customer anonymity while disclosing the identity of would provide some customer anonymity while disclosing the identity of
the merchants. DigiCash, a commercial implementation of Chaum's the merchants. DigiCash, a commercial implementation of Chaum's
@ -287,6 +291,8 @@ to what degree the implementation is even complete. Only a partial
description of the Opencoin protocol is available to date. description of the Opencoin protocol is available to date.
% FIXME: ask OpenCoin dev's about this! Then make statement firmer! % FIXME: ask OpenCoin dev's about this! Then make statement firmer!
% FIXME: not only by brands. this formulation sounds like
% we're unaware of the huge body of work in the area that is still growing.
Chaum's original digital cash system~\cite{chaum1983blind} was Chaum's original digital cash system~\cite{chaum1983blind} was
extended by Brands~\cite{brands1993efficient} with the ability to {\em extended by Brands~\cite{brands1993efficient} with the ability to {\em
divide} coins and thus spend certain fractions of a coin using divide} coins and thus spend certain fractions of a coin using