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diff --git a/doc/paper/taler.tex b/doc/paper/taler.tex index fa6b34754..c1c6ce57b 100644 --- a/doc/paper/taler.tex +++ b/doc/paper/taler.tex @@ -178,6 +178,9 @@ provider~\cite{martens2015practical}. The customer should also not be expected to withdraw exact change, as doing so reduces anonymity due 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 refresh protocol} allowing for ``divisible'' transactions with amortized costs logarithmic in the amount of value being transacted. @@ -243,6 +246,7 @@ disintermediated transactions. %\subsection{Chaum-style electronic cash} +% FIXME: what limitations? substantiate! Chaum~\cite{chaum1983blind} proposed a digital payment system that would provide some customer anonymity while disclosing the identity of 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. % 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 extended by Brands~\cite{brands1993efficient} with the ability to {\em divide} coins and thus spend certain fractions of a coin using |