[freehaven-cvs] Minor edits all over

[aas23@xxxxxxxx]

Update of /home/freehaven/cvsroot/doc/alpha-mixing
In directory moria:/home/aas23/doc/alpha-mixing

Modified Files:
	alpha-mixing.tex 
Log Message:
Minor edits all over


Index: alpha-mixing.tex
===================================================================
RCS file: /home/freehaven/cvsroot/doc/alpha-mixing/alpha-mixing.tex,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -d -r1.14 -r1.15
--- alpha-mixing.tex	10 Mar 2006 23:27:27 -0000	1.14
+++ alpha-mixing.tex	10 Mar 2006 23:51:32 -0000	1.15
@@ -33,12 +33,13 @@
 \title{Blending different latency traffic with $\alpha$-mixing}
 %\title{Alpha-mixing or Getting Personal with the Adversary}
 
-\author{Roger Dingledine\inst{1} \and Andrei Serjantov\inst{2} \and Paul Syverson\inst{3}}
-
-\institute{The Free Haven Project \email{(arma@xxxxxxxxxxxxx)} \and
-The Free Haven Project \email{(aas23@xxxxxxxxxxxxx)} \and
-Naval Research Lab \email{(syverson@xxxxxxxxxxxxxxxx)}}
+%\author{Roger Dingledine\inst{1} \and Andrei Serjantov\inst{2} \and Paul Syverson\inst{3}}
+\author{Anonymous}
 
+%\institute{The Free Haven Project \email{(arma@xxxxxxxxxxxxx)} \and
+%The Free Haven Project \email{(aas23@xxxxxxxxxxxxx)} \and
+%Naval Research Lab \email{(syverson@xxxxxxxxxxxxxxxx)}}
+\institute{Potential PET author}
 
 \maketitle
 \pagestyle{empty}
@@ -47,18 +48,20 @@
 
 \begin{abstract}
 
-Currently fielded anonymous communication systems either introduce
-too much delay and thus have few users and little security, or have
-many users but too little delay to provide protection against large
-attackers. By combining the user bases into the same network, we can
-make it possible to have enough users that anonymous high-latency
-traffic becomes feasible.
+Currently fielded anonymous communication systems either introduce too
+much delay and thus have few users and little security, or have many
+users but too little delay to provide protection against large
+attackers. By combining the user bases into the same network, and
+ensring that all traffic is mixed together, we hope to lower delay and
+improve anonymity for both sets of users.
 
 $\alpha$-mixing is an approach that can be added to traditional
-batching strategies to let senders specify for each message whether they
-prefer security or speed. Here we describe how to add $\alpha$-mixing
-to various mix designs, and show that mix networks with this feature
-can provide increased anonymity for all senders in the network.
+batching strategies to let senders specify for each message whether
+they prefer security or speed. Here we describe how to add
+$\alpha$-mixing to various mix designs, and show that mix networks
+with this feature can provide increased anonymity for all senders in
+the network. Along the way we encounter subtle issues to do with the
+attacker's knowledge of the security paramaters of the users.
 
 \end{abstract}
 
@@ -76,20 +79,19 @@
 decreases the security that the network can provide, discouraging even
 the users who need high security~\cite{econymics}.
 
-Here we design a hybrid batching strategy for mixes that combines users
-with different anonymity and performance goals into the same network.
+Here we design a hybrid mix batching strategy that combines users with
+different anonymity and performance goals into the same network.
 
-In our scheme, each sender communicates
-an $\alpha$ -- a security parameter -- to each mix along the route of her
-message. The time the message spends inside each mix (and hence the
-anonymity it accumulates) then depends on the size of the security
-parameter. The message's $\alpha$ value at each mix decrements based
-on certain events, and when it reaches zero it is reintegrated back into
-the mix network.
-Our scheme can be combined with any of the standard mix types
-such as timed mixes, pool mixes, etc.~\cite{trickle02} to
-give each sender more control over the anonymity/performance tradeoff
-of her message.
+In our scheme each sender communicates an $\alpha$ -- a security
+parameter -- to each mix along the route of her message. The time the
+message spends inside each mix (and hence the anonymity it
+accumulates) then depends on the size of this security parameter. The
+message's $\alpha$ value at each mix decrements based on certain
+events, and when it reaches zero it is reintegrated back into the mix
+network.  Our scheme can be combined with any of the standard mix
+types such as timed mixes, pool mixes, etc.~\cite{trickle02} to give
+each sender more control over the anonymity/performance tradeoff of
+her message.
 % (Depending on the type of mix used, it can also depend on
 %other variables such as the traffic level in the network, the number of
 %messages inside the mix, or a random number chosen by the mix.)
@@ -114,17 +116,16 @@
 %knowledge of the alphas in the messages, and this is what we are
 %relying on, see the analysis section.
 
-In this paper we start by outlining some simple
-$\alpha$-mix designs and analyse what anonymity properties they can
-provide to users with different security preferences. Next we
-look at what strategies users should follow when picking the
-security parameter for each mix in the message's path.
-Thirdly, we look at the incentives users have
-for choosing a high security parameter themselves rather than
-expecting others to take the latency penalty
-(and thus provide more anonymity to everyone). Lastly we consider more
-sophisticated $\alpha$-mixing strategies which should provide better
-properties but are hard to analyse.
+In this paper we start by outlining some simple $\alpha$-mix designs
+and analysing the anonymity properties they can provide to users with
+different security preferences. Next we look at the strategies users
+should follow when picking the security parameter for each mix in the
+message's path.  Thirdly, we look at the incentives users have for
+choosing a high security parameter themselves rather than expecting
+others to take the latency penalty (and thus provide more anonymity to
+everyone). Lastly we consider more sophisticated $\alpha$-mixing
+strategies which should provide better properties but are hard to
+analyse.
 
 %AAS: this should all hopefully be in the paragraph above.
 %\subsection{Outline}
@@ -578,7 +579,7 @@
 We now turn to how to combine these features.
 
 \section{Dynamic-Alpha Mixing and Other Variations}
-
+\label{sec:dynamic-alpha}
 The prior work that is probably most similar to alpha mixing is
 stop-and-go mixing~\cite{stop-and-go}. In stop-and-go mixing, the sender
 gives to each mix in the path a time interval. If the message arrives

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