Eternity Servis

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Eternity Service
http//www.kolej.mff.cuni.cz/eternity
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Content

• What is Eternity Service
• Project goals
• Implementation
• Example

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Motivation
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Motivation
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System requirements

• search
• download
• upload
• delete
• modify

• anonymity
• security

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History

• Ross Anderson
• Adam Back
• Tonda Benes
• we, MFF UK

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Project goals

• search for data
• store data
• anonymous communication
• protocols for electronic payments
• time synchronization
• administrator interface
• extendability

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Implementation
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Implementation
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Implementation
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Implementation
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Implementation
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Mix

• onion routing
• traffic padding
• header padding
• data padding
• certificates for Six

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Onion routing
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Six
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Six
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Six
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Eso

• search data
• store data
• payments for storage
• time synchronization

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Acs
Management of certificates of

• Esos
• Mixes
• Banks

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Bank

• Accepts money from clients
• management of anonymous accounts
• payments to Esos (payments validity checks)

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Client
operations

• upload file
• search for file
• download file

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Technology used

• objects
• threads
• FreeBSD
• STL
• RSAEuro

C
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Example
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Upload file
Request for Eso certificates Request for
storage File to store
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Upload file
Request for Eso certificates Request for
storage File to store
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Upload file
Request for Eso certificates Request for
storage File to store
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Search for file
Request for Eso certificates Request to search
for file
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Search for file
Request for Eso certificates Request to search
for file
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Download file
Request for Eso certificates Request for file
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Download file
Request for Eso certificates Request for file
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Summary

• search for data
• store data
• anonymous communication
• protocols for e-payments
• time synchronization
• administrator interface
• extendability

• Eso - TCB, Client
• Eso - TCB, encryption
• Mix, onion routing
• Bank, Bankers
• Scheduler, Synchronizer
• config log files
• Six, GMessage

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Eternity Service
http//www.kolej.mff.cuni.cz/eternity