1. Eternity Service http://www.kolej.mff.cuni.cz/~eternity

2. Content zWhat is Eternity Service zProject goals zImplementation zExample

3. Motivation

5. System requirements zsearch zdownload zupload zdelete zmodify z anonymity z security

6. History zRoss Anderson zAdam Back zTonda Benes zwe, MFF UK

7. Project goals zsearch for data zstore data zanonymous communication zprotocols for electronic payments ztime synchronization zadministrator interface zextendability

8. Implementation

13. Mix z onion routing z traffic padding z header padding z data padding z certificates for Six

14. Onion routing

15. Six

18. Eso z search data z store data z payments for storage z time synchronization

19. Acs z Esos z Mixes z Banks Management of certificates of:

20. Bank z Accepts money from clients z management of anonymous accounts z payments to Esos (payment‘s validity checks)

21. Client z upload file z search for file z download file operations:

22. Technology used zobjects zthreads zFreeBSD zSTL zRSAEuro

23. Example

24. Upload file Request for Eso certificates Request for storage File to store

25. Upload file Request for Eso certificates Request for storage File to store

26. Upload file Request for Eso certificates Request for storage File to store

27. Search for file Request for Eso certificates Request to search for file

28. Search for file Request for Eso certificates Request to search for file

29. Download file Request for Eso certificates Request for file

30. Download file Request for Eso certificates Request for file

31. Summary zsearch for data zstore data zanonymous communication zprotocols for e-payments ztime synchronization zadministrator interface zextendability z Eso - TCB, Client z Eso - TCB, encryption z Mix, onion routing z Bank, Bankers z Scheduler, Synchronizer z config & log files z Six, GMessage

32. Eternity Service http://www.kolej.mff.cuni.cz/~eternity