intro (1346B)
1 * Introduction 2 3 The Internet is getting more and more centralized with users' personal data 4 hosted on servers of large service providers, which involves serious privacy 5 concerns. As in most cases these systems do not provide end-to-end 6 confidentiality, server operators have full access to user data and users are 7 often unaware of how much data is stored about them or with whom their data is 8 shared with. Such systems include email and instant messaging services like 9 GMail and GTalk, social network services like Facebook, Google+ and Twitter, or 10 file storage and sharing services like Dropbox. 11 12 It is possible to implement social sharing and messaging in a privacy protecting 13 way. Chapter 2 describes previous attempts at this by federated social networks, 14 problems with that approach and our requirements for secure communication. 15 16 We suggest a peer-to-peer architecture as a better basis for a social network 17 system in Chapter 3. We show how social interactions would work in such 18 a network while maintaining privacy of users. 19 20 In Chapter 4 we introduce core concepts of PSYC and show how we integrated it 21 with P2P technology provided by the GNUnet framework, and tell more about 22 implementation details of the prototype of Secure Share. 23 24 Chapter 5 describes the clients we have implemented and shows extension 25 possibilities of Secure Share.