[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

[freehaven-cvs] slides for the WiP talk at the mit reputation sympos...

Update of /home/freehaven/cvsroot/doc/econp2p03
In directory moria.mit.edu:/home/arma/work/freehaven/doc/econp2p03

Added Files:
	slides-repsym.pdf slides-repsym.tex 
Log Message:
slides for the WiP talk at the mit reputation symposium, apr 28


--- NEW FILE: slides-repsym.pdf ---
%PDF-1.3
3 0 obj <<
/Length 294       
/Filter /FlateDecode
>>
stream
xڅN0EY:?%

T!U
H{&heɺ7(xI/!
A,pDzX0m6{uE;z(myC$wQ҇*~Yȁ!$ZH-\sMʥ!/i5Ԥl.FP$M+5&'yaS\)
jY;8\[iuiܹm~ew2r4zW^c	>˟u:endstream
endobj
2 0 obj <<
/Type /Page
/Contents 3 0 R
/Resources 1 0 R
/MediaBox [0 0 792 612]
/Parent 7 0 R
>> endobj
1 0 obj <<
/Font << /F16 6 0 R >>
/ProcSet [ /PDF /Text ]
>> endobj
10 0 obj <<
/Length 632       
/Filter /FlateDecode
>>
stream
xUM0W -.6<UԭԞ"aU}즛Haxޛ1?(A:? LBkaj	bJTTޟ-os`sILbj0UFߋRŇ"#PɫqsFD1cX/}neUg<WDR\ca׌6dv
6m9?(!"ńk4Qg'ihUJN1J|[P,.H</$e@0gUG:cRRX,vJgU`_Ό}Q&Suq6f0wu
3:,.6}ϽX`:ڶ8/-@hjǼ[?ߛ[ob]Ϧ;6PnY;3\SGˠ+7nڦX{(Iqd9β-YH߃_ɨ.,}!^}ǚ;'w5f	3	ڲ'QNSp,ӭ&P8N84#u]gUc/)Lͦp-ЛӅh=^";doW
`9
hSd95a))
'Xd
endobj
9 0 obj <<
/Type /Page
/Contents 10 0 R
/Resources 8 0 R
/MediaBox [0 0 792 612]
/Parent 7 0 R
>> endobj
8 0 obj <<
/Font << /F16 6 0 R /F23 13 0 R >>
/ProcSet [ /PDF /Text ]
>> endobj
16 0 obj <<
/Length 542       
/Filter /FlateDecode
>>
stream
xՔ=s0w
n186wi{Ԝ:hy$R$Dc{y0
A~3j Fc0#Ρ>CfQ$3-Yַl%4}%1WSpAJ_aUHPBBULW?1Ux2O}Sl{6Rxqw.6e{Dʥ$Xqf\Bj<n9©:` (.ԛ_
hv&oR,Wp~'̖xRa{b) #uÐnZ߻
}{Zc',N8erjF#rU9햿(~a8i#endstream
endobj
15 0 obj <<
/Type /Page
/Contents 16 0 R
/Resources 14 0 R
/MediaBox [0 0 792 612]
/Parent 7 0 R
>> endobj
14 0 obj <<
/Font << /F16 6 0 R /F23 13 0 R >>
/ProcSet [ /PDF /Text ]
>> endobj
19 0 obj <<
/Length 543       
/Filter /FlateDecode
>>
stream
xUMs0WVa}[\ah)p7`l`+
׳49gye#hoQB9Rk$jFiAf8U"ч[r_ .̰LOrS./nD`B%*@)/$e$In
/ӥ2IHFtɉJn{ӧߊo$> X}/*@(C<#E}͈zP,v}o2B:6[C6]Lw7 8왈НC2Meه8ۙ?4qí#e6juV
E/lwW~Ohg9ܥRoƸ	={.6
ilg^ΰ3mP1W9%Iof+E=\ME&cP+]
VfN۠U6Nn]ThZՙ:93uZz°qaW4{endstream
endobj
18 0 obj <<
/Type /Page
/Contents 19 0 R
/Resources 17 0 R
/MediaBox [0 0 792 612]
/Parent 7 0 R
>> endobj
17 0 obj <<
/Font << /F16 6 0 R /F23 13 0 R >>
/ProcSet [ /PDF /Text ]
>> endobj
22 0 obj <<
/Length 692       
/Filter /FlateDecode
>>
stream
xVK0WF"?
p56%޴K;p:w#u\q.7oDjsktIN"32uD%Tɗl0(id#9X¿|endstream
endobj
21 0 obj <<
/Type /Page
/Contents 22 0 R
/Resources 20 0 R
/MediaBox [0 0 792 612]
/Parent 7 0 R
>> endobj
20 0 obj <<
/Font << /F16 6 0 R /F23 13 0 R >>
/ProcSet [ /PDF /Text ]
>> endobj
25 0 obj <<
/Length 565       
/Filter /FlateDecode
>>
stream
xTKo0
G"&~'<%Pdyd[_ό.[gJٙ<oz>#]mXa +&
Mƚ
_=`+E2In=#ɝme
8f$,3oO([nCಭ>ӫ>u*nh?$)uiK~|ݾ߼ng`X!Y|ɸ}Xf>#Ӟa2UKCs/2Kevʼws{kH)z-%-
kU5ȧlA)JYǻ<ӫ ks@,ЬPB%&yXFS(xygXendstream
endobj
24 0 obj <<
/Type /Page
/Contents 25 0 R
/Resources 23 0 R
/MediaBox [0 0 792 612]
/Parent 7 0 R
>> endobj
23 0 obj <<
/Font << /F16 6 0 R /F23 13 0 R >>
/ProcSet [ /PDF /Text ]
>> endobj
12 0 obj <<
/Length1 769
/Length2 589
/Length3 532
/Length 1139      
/Filter /FlateDecode
>>
stream
xSUuLOJu+53Rp
P03RUu.JM,sI,IR04Tp,MW04U00222*Rp/,L(Qp)2WpM-LNSM,HZRQZZTeh\ǥrg^Z9D8
@'T*qJB7ܭ4'/1d<(0s3s*
sJKR|SRЕB曚Y.Y옗khg`l
,vˬHM	,IPHK)N楠;z`{9:zhCb,WRY`P"0*ʬP6300*B+.׼̼t#S3ĢJ.QF
Ն
y)
@
bw_#</:nؾx>ZLΊdS4u@}Ywo^RZԬ/F03b۱!HWD=*zwId
&U߷霺Ͼ;J֪\}zG96[;؜Q:8#%
S\;㙘oKBp?5vkF]iMæxҞ=JgOOϛljؑ{INqE9W~W3K{^s'~)ջ3u~k'xξ&cojgJoPmewtyz>_ђ1:ZE}<RϤ'Jwet{>*蕢~_4]t$w/DyKibԔs{'|#1߻J$<gy萛ѣ;.tqcC(\sRJs
endobj
13 0 obj <<
/Type /Font
/Subtype /Type1
/Encoding 26 0 R
/FirstChar 15
/LastChar 15
/Widths 27 0 R
/BaseFont /JVAAKP+CMSY8
/FontDescriptor 11 0 R
>> endobj
11 0 obj <<
/Ascent 750
/CapHeight 683
/Descent -194
/FontName /JVAAKP+CMSY8
/ItalicAngle -14
/StemV 89
/XHeight 431
/FontBBox [-30 -955 1185 779]
/Flags 4
/CharSet (/bullet)
/FontFile 12 0 R
>> endobj
27 0 obj
[531 ]
endobj
26 0 obj <<
/Type /Encoding
/Differences [ 0 /.notdef 15/bullet 16/.notdef]
>> endobj
5 0 obj <<
/Length1 1665
/Length2 9081
/Length3 532
/Length 10039     
/Filter /FlateDecode
>>
stream
xUX\`,8t ww	.74и;@pw ݃'t;&sqi~鵫jת]UCZUY(
:-U/;%+[ 6bV@
?A=6!wB_UAKgBB_Av_rVB5\B/jP
jxP
ϿB5 A".)f9|ܼkG-葔^~6N
}H-m4 h0h.bTV'7Q
_qxm8r#ҙc+]rvܓ4$Ʊq8Z=.$r}aGӽ]{fK#
vɰFlbtP!jGB(hy|ZjXp:;v1EƀQfЫF,9
DzbÕ!+QOK&
ENy+__sGMbh-1ס'~nkPbfSv+5["qNir{a'=Dx#<+:W;RCU[0i8y qpsA6eu(=Qj<ݏl4lډzu.g4[&LU!m鬫'!g>
jIE<셯l4!תO/x[0r-B>ǚsP92Ӑ\*IUBԞRfn9ω4O?>iʅ+dX{6(&(wߒό
X&%7l;a
A$$:/dMCg2 e#K-8d9YKpgS{O7̍tpE۾~M(PY;΁K
vI42tʻᢁ\cƁ:T5*t"H4s3H3cA&!Q+h't=ZR)'WE/~Nj
Oܙ)%%hi >eCw|`6C}sz|Qc#
:46f)e/1Rv&ϸod{YrpTckK
KB#θcNg2fB@s~uâhV#7jt$Ҟ4j=x(";T%_}QwT05^aPPr"m]gԖTQgm]~\%!OH1He8[+em-*0Bl}/'Rwk}OӍ/=>+)xDVe?G㹢6gn.7'ĦoXIB>Gֳ'jj]D#">,1{q0%$T<rUFVzf'[ųo%|w_[a8ey0u[tg|CiF\QoqLxZ+)W«So<ϸ!gptb	ik4z.S͘M*Dic)Euí\WL뛃ɋ_4Hnѯ`bs_ZZwNA9ycSҟdiF5gmN!qսZA`z@eIa{gwr@-]M)@`>20=sv]|lXWȃe4(PpXWd@gh݀O;2=ZsB_`	,5B)]/d=NpS^'v12mR=Gr6~weT2O1\saL~tKmiq1¾Qa>
M#L$ŕR[}N/}󲢐^7P?k
Kzε嫦0!>e\]b(K
u\ޘB$:
7Eo2URB`_qg]{^Jpj7-:[:|[6[eI(#:i|Y}>3hq<Tot_zL@Ν`[LuCvݥXh	`WZ%Ɛ7$/u6^5`^$LߓGu5N%%th~D`qSs*xM#nXrhG==({{Jh4Q"P}}BӾQc?AAZn17[XHk>[l²QNwM xG g-~bpxKݪD,Y*8_ѱvw)fw\=$ڲ1y5_ќQ6=QF˄q.M#YgZrr"0##笡=D+y$OVYIR''̡PBS0
!mFh>/BSFG|շɂmަb4Y,&>\|h(u/]a38z 9o
'JlBI
gmJݍ&j[ogjeߴPؿaX%rRsZ+0pʯw5cQʕfbz!R^4Kr[yƹxy׼ltʰo
dkrHd+{E¡
x]V^L($ӥ>uҨ	h:umSWU{7}[/Nh?R(
7KIi
lo$柍mS<j"05wc^ISgɵu.i@\x^
2:j$RG<Hf
7 4v3{xp`3iǾ5x}{0UgLCÌt~N&!<8+aQKjUK1c"o>a Ô`v @R\$e!=u]>EgE	[,̟{4VjϹEr77y<4#
TR ّBvGO837*r*#6}(+-w&iRҮi+hAN*v0z	 	]
Wʕ&`Q&Ie8/%
;wl[XRǮa7e<O.%$0m~njFB.88?Gi)RW Ҍ<UKF>%{) #35x}~GgqJS~%МWvIHE7._Nxmnۚ&o^
XYHbf%mӧzv*dtJ'Ao6Ir;J;
':˂^]m~}ޘKk[B5
zH=9dG\bͻXx)lpjfL0/3}b'mt2
ydX
f2T̖z}~cd\m)͸\9!e/o-5{-\ٷ1svxH)=<n!T<Oo;C4^f
F_qaˠD3s~"	Kn0:\Sycxho<+:
1ƕK+	xo5
Ќiq	;S|?z"ΰu-i<.B[ŲQ4XeS6mZE43ાE
TBFDMQv(BvCq7d$anhϴzID:"d[!D膥.ArL{9QXڨތ^<Kʱ"4ߺf$H;c9!V]_8ik?džkӛ›O.vv#"	.S_Z%g۫	˦-,f]xJywc7h@~no!9V0R1R٪>+лs*
NDeQpiWXAނByv˜zb>|/EOQZ?t$?˶csp_~#@r.TFJnUM3mD(ѿI1 qv~{eT5JXhDw%ɪrFcݹGUQD6qDHyu@Ւ^G|0s@T5
_iR5<y2C
_B C=GB#TxG>
GO"h@>&8%2΍Ӿ̏NAiC
f]nhhq`5(1VF	-~18y)!z={B1AYN
[phA
řDo_L[?gG%Oieøij$>!\ MPFm :|cm3-$WU?{MNj\h.6ղE9Gn=F4/xB냋W(7Ʉ<p4@?Sڭ#jrՖ*NVR?GFX4)dudwxɲHXn{RϞozl][O,Ny{[.맭
ME'S
Ox~>g)%tcuEM$MzO_;\(4ʋ!qiI2/-~b/*u?FCɐlwƇ,+Ha+Nui=MCMFl"%SO^x=Tl$U9-E!
epI&)¤4
_m ajjP[$@ʨ
szPX;iف2`|I#u!mXg;HLW6gqk}_gNBF9-9DX?GjԱn1uie: i=$̢GIR
:ԏJ4	eXTegm&KZ5E>Q{4ٽ=Yz "u4qNZtg
s>h5]R\I'0[{4ٷzMA	W	lBHffP񧀏0}hp
Nzž$Q1%-bOEĊ* ~{kv*S\Sk?Ԥ#s}AzPxE5wghǤؕyOL>_:}*	
gID=^7%^i#0ً͙Dw?2b~nxp{Ec=NjH`nC[4eb6%J* u*2Y1(#$Г?,0;^&eL`)kC܉.29eD6";5ce:;jO(HU"C]x_\wѐɚFfn4CΖ[YGq1`-_A=0V>XZ-D(i?)w;u}7fJݙuaxb򓔨eBߔ`ǵX1>'_Yv\^%&E^NWN."DRp#O |&N۫L=lu+)S,?אO,{%3OK+ՐBhdj*kf0EdXKqzMAODs{3dl?
endobj
6 0 obj <<
/Type /Font
/Subtype /Type1
/Encoding 28 0 R
/FirstChar 11
/LastChar 124
/Widths 29 0 R
/BaseFont /QRXYOP+LCMSS8
/FontDescriptor 4 0 R
>> endobj
4 0 obj <<
/Ascent 694
/CapHeight 684
/Descent -139
/FontName /QRXYOP+LCMSS8
/ItalicAngle 0
/StemV 80
/XHeight 521
/FontBBox [-87 -208 1285 857]
/Flags 4
/CharSet (/ff/fi/ffi/quoteright/parenleft/parenright/comma/hyphen/period/slash/one/two/three/four/five/six/colon/question/A/B/C/D/E/F/H/I/M/P/R/S/T/W/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/r/s/t/u/v/w/x/y/z/emdash)
/FontFile 5 0 R
>> endobj
29 0 obj
[729 660 0 1007 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 347 486 486 0 0 347 417 347 625 0 625 625 625 625 625 625 0 0 0 347 0 0 0 0 590 0 806 819 799 889 778 743 0 812 319 0 0 0 1021 0 0 785 0 816 694 896 0 0 1153 0 0 0 0 0 0 0 0 0 590 625 556 625 556 382 625 625 278 313 590 278 972 625 625 625 0 417 479 451 625 556 833 556 556 538 0 1250 ]
endobj
28 0 obj <<
/Type /Encoding
/Differences [ 0 /.notdef 11/ff/fi 13/.notdef 14/ffi 15/.notdef 39/quoteright/parenleft/parenright 42/.notdef 44/comma/hyphen/period/slash 48/.notdef 49/one/two/three/four/five/six 55/.notdef 58/colon 59/.notdef 63/question 64/.notdef 65/A/B/C/D/E/F 71/.notdef 72/H/I 74/.notdef 77/M 78/.notdef 80/P 81/.notdef 82/R/S/T 85/.notdef 87/W 88/.notdef 97/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p 113/.notdef 114/r/s/t/u/v/w/x/y/z 123/.notdef 124/emdash 125/.notdef]
>> endobj
7 0 obj <<
/Type /Pages
/Count 6
/Kids [2 0 R 9 0 R 15 0 R 18 0 R 21 0 R 24 0 R]
>> endobj
30 0 obj <<
/Type /Catalog
/Pages 7 0 R
>> endobj
31 0 obj <<
/Producer (pdfTeX-0.14h)
/Creator (TeX)
/CreationDate (D:20030426163200)
>> endobj
xref
0 32
0000000000 65535 f 
0000000485 00000 n 
0000000381 00000 n 
0000000009 00000 n 
0000016897 00000 n 
0000006583 00000 n 
0000016741 00000 n 
0000018142 00000 n 
0000001369 00000 n 
0000001264 00000 n 
0000000553 00000 n 
0000006272 00000 n 
0000004859 00000 n 
0000006116 00000 n 
0000002177 00000 n 
0000002070 00000 n 
0000001449 00000 n 
0000002987 00000 n 
0000002880 00000 n 
0000002258 00000 n 
0000003946 00000 n 
0000003839 00000 n 
0000003068 00000 n 
0000004778 00000 n 
0000004671 00000 n 
0000004027 00000 n 
0000006497 00000 n 
0000006474 00000 n 
0000017652 00000 n 
0000017285 00000 n 
0000018233 00000 n 
0000018283 00000 n 
trailer
<<
/Size 32
/Root 30 0 R
/Info 31 0 R
>>
startxref
18378
%%EOF

--- NEW FILE: slides-repsym.tex ---

\documentclass[landscape]{slides}

\usepackage{color}
\pagecolor{blue}
\color{yellow}

\newif\ifpdf
\ifx\pdfoutput\undefined
   \pdffalse
\else
   \pdfoutput=1
   \pdftrue
\fi

\newenvironment{tightlist}{\begin{list}{$\bullet$}{
  \setlength{\itemsep}{0mm}
    \setlength{\parsep}{0mm}
    %  \setlength{\labelsep}{0mm}
    %  \setlength{\labelwidth}{0mm}
    %  \setlength{\topsep}{0mm}
    }}{\end{list}}

\begin{document}
\ifpdf
  \pdfcompresslevel=9
  \pdfpagewidth=\the\paperwidth
  \pdfpageheight=\the\paperheight
\fi

\newcommand\slidetitle[1]{\begin{center} \huge #1 \end{center}}

\begin{slide}
\begin{center}
\Huge
Reputation and Anonymity\\
\vspace{1in}
Roger Dingledine\\
\vspace{.5in}
The Free Haven Project\\
\end{center}
\end{slide}

\begin{slide}
\slidetitle{Why reputation is critical for anonymity systems}
\large
\begin{tightlist}
\item Traditional accountability (eg contract) doesn't work
\item Since we don't know full network state, \\transactions tend to
be unreliable
\item With many nodes, each node won't interact with everybody often.
Free riding?
\item Shared reputation can maybe help reliability?
\end{tightlist}
\end{slide}

\begin{slide}
\slidetitle{Why reputation is problematic for anonymity systems}
\Large
\begin{tightlist}
\item Attacker or freeloader can cheaply throw away bad-reputation nyms
\item Hard to detect/verify a node's behavior while maintaining anonymity
\item Reputation information can be exploited to subvert anonymity
\end{tightlist}
\end{slide}

\begin{slide}
\slidetitle{Example: Free Haven}
\large
\begin{tightlist}
\item Decentralized anonymous publishing system
\item Publishers decide lifetime of their file\\
Tit for tat: I'll store your file if you'll store mine.
\item Hard: need reputation system to determine who will cheat
\item Harder: how do you verify a claim?
\end{tightlist}
\end{slide}

\begin{slide}
\slidetitle{Reputation can be exploited}
\large
\begin{tightlist}
\item A node can't measure all nodes. If he measures only
some, he gives away who he might use.
\item But central reputation server can give different info to different
people
\item Adversary has incentive to get good reputation --- and discredit
other nodes --- to see traffic
\item Tension between giving users accurate timely \\information, and
preventing adversary from \\manipulating user behavior
\end{tightlist}
\end{slide}

\begin{slide}
\slidetitle{More open topics}
\large
\begin{tightlist}
\item Are dynamic p2p systems that don't allow claim verifiability
doomed? Altruism, yhprum?
\item Can we model reputation as currency? May allow easier
decentralization.
%\item Incentives: If anonymity for all requires each user doing similar
%things, how do we deal with users who don't want as much anonymity?
\item Do we have to abandon statistical rigor in the face of this
uncertainty?
\end{tightlist}
\end{slide}

\end{document}


***********************************************************************
To unsubscribe, send an e-mail to majordomo@seul.org with
unsubscribe freehaven-cvs       in the body. http://freehaven.net/