clipperz
zero-knowledge web applications
Giulio Cesare Solaroli
6-7-8 February 2008
Geneva, Switzerland

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The internet is
the safest place for
your private and
sensitive data.

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Your data is moving

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Your data is moving
> >

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Web applications
are great!

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Web applications
are great!
but ...

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Would you give your
health records
to Google or Microsoft?

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Would you give your
health records
to Google or Microsoft?
ys Its New Microsoft Google and
G oogle Sa
latform Service Stores Microsoft Look to
H ealth P
Due I n Early Health Records Change Health
Is
2008 Online Care

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How about
playing poker at
AbsolutePoker.com?

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How about
playing poker at
AbsolutePoker.com?
AbsolutePoker The
probed
Absolut
for insider
nightma
e
cheating
re

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Would you write your
business plan with an
online tool?

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Would you write your
business plan with an
online tool?

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It’s your data!

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It’s your data!
You should have
exclusive ownership
and control.

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zero-knowledge
web applications

clipperz
zero-knowledge
web applications
Online services that know
nothing about their users and
the data they handle.

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clipperz online
password manager
www.clipperz.com

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How does it work?

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Browser can do
sexy things

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Browser can do
sexy things

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Browser can do math

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Browser can do math
JavaScritpt transform every
browser into a powerful number
crunching tool

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Server
…#c13$u&94*...

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Server
…#c13$u&94*...

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Server
…#c13$u&94*...

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Server
hello
…#c13$u&94*...

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Server
hello
…#c13$u&94*...
#c13
$u&w94
*

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The Crypto-engine

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The Crypto-engine
RET
S EC
T O P
• AES-256 • SRP authentication
• SHA2-256 • ECC
• Fortuna PRNG • …

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More zero-knowledge
applications to come ...

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More zero-knowledge
applications to come ...
personal finance manager
hosted wiki
off-the-record web chat
social gambling network for poker lovers
medical record management
...

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Conclusions

www. clipperz .com
Marco Barulli
marco@clipperz.com
Clipperz srl
Giulio Cesare Solaroli via Berti 137
giulio.cesare@clipperz.com Bagnacavallo - ITALY