IEEE CCNC 2011: Kalman Graffi - LifeSocial.KOM: A Secure and P2P-based Solution for Online Social Networks
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Lifesocial.kom is a peer-to-peer (P2P) based platform aimed at providing secure, distributed social networking solutions, addressing the high costs associated with traditional centralized systems. The proposed architecture supports user interaction, data storage, and access management without the necessity of central servers, leveraging the capabilities of users' devices. The platform promises a rich functionality through a plugin architecture and includes monitoring mechanisms for quality assurance and performance evaluation.
![Our Monitoring Solution for P2P Systems Statistic updates Periodically sent to parent peer Aggregated in each node ( same size) Topology Tree based information architecture Uses p2p overlay functionality [µ,σ,σ²,Σ, min,max] [µ,σ,σ²,Σ, min,max] [µ,σ,σ²,Σ, min,max] See: K. Graffi et al., “Monitoring and Management of P2P Systems” In: IEEE Peer-to-Peer Computing '09 (IEEE P2P’09), September 2009. 0 1 1 10 50 20 30 40 45 15 0,09 0,2 0,3 0,4 0,51 0,6 0,75 0,9](https://image.slidesharecdn.com/2011kalman-graffiieee-ccnc-11lifesocial-110216100832-phpapp01/85/IEEE-CCNC-2011-Kalman-Graffi-LifeSocial-KOM-A-Secure-and-P2P-based-Solution-for-Online-Social-Networks-26-320.jpg)
![Our Monitoring Solution for P2P Systems Topology Tree based information architecture Uses p2p overlay functionality Statistic updates Periodically sent to parent peer Aggregated in each node ( same size) [µ,σ,σ²,Σ, min, max] [µ,σ,σ²,Σ, min, max] [µ,σ,σ²,Σ, min, max] 0 1 1 10 50 20 30 40 45 15 0,09 0,2 0,3 0,4 0,51 0,6 0,75 0,9](https://image.slidesharecdn.com/2011kalman-graffiieee-ccnc-11lifesocial-110216100832-phpapp01/85/IEEE-CCNC-2011-Kalman-Graffi-LifeSocial-KOM-A-Secure-and-P2P-based-Solution-for-Online-Social-Networks-27-320.jpg)
IEEE CCNC 2011: Kalman Graffi - LifeSocial.KOM: A Secure and P2P-based Solution for Online Social Networks
- 1. LifeSocial.KOM: A Secure and P2P-based Solution for Online Social Networks Kalman Graffi, Christian Gross, Dominik Stingl, Daniel Hartung, Aleksandra Kovacevic, and Ralf Steinmetz
- 2. Motivation Typical motivation for p2p applications Client / Server is bad P2P is needed My motivation: P2P is dying BitTorrent, edonkey, …, file sharing One click hosting Skype technological issues, although simple functionality Wuala, data storage very centralized Joost (p2p tv), Groove (groupware) Not anymore P2P The Cloud is killing the purpose of P2P on user devices Quality and costs are guaranteed
- 3. What might be the next P2P application?
- 4. Online Social Networks What are ‘Online Communities’ technically? Web-based applications (StudiVZ, Facebook, MySpace, Xing) Provide different services for community members Plugin architecture Events Personal information and photos Friends Social interaction Games
- 5. Goals and Motivations Users want Storing and searching for content Profiles, friend lists, … Pictures, shared “Wall” editing, … User to user interaction Chatting, VoIP, … Games Security Access control on their data Secure, confidential communication Fun! System providers want High profit Many users Personalized advertisements Low operational costs For servers, electricity, cooling … For personnel, legal issues Controlled Quality of Service To attract and keep users Providing reliable, high quality services Money! Our goal: all of the above following the P2P paradigm
- 6. How do they work? What is the architecture beneath?
- 7. Current IT Paradigm: Client / Server Web-based solution Lots of operational costs! Rough estimation: 1$/y per user Facebook: 500M users ! € € € €
- 8. Alternatives? – Peer-to-Peer based Platforms Idea: Use capacities of user devices (Moore’s law!) Interconnect users with p2p-overlay Provide all functionality in a distributed way Shift the load and costs to the users Platforms: LifeSocial.KOM SafeBook, PeerSon € € €
- 9. Our Solution: LifeSocial.KOM Researched since end of 2007 Ca. 10 diploma / bachelor theses on this topic Ca. 20 students programming plugins / GUIs in “Praktika” / project seminars See: www.lifesocial.org
- 10. How does it look like? What can you do?
- 11. Screenshots See: www.lifesocial.org
- 12. See: www.lifesocial.org See: www.lifesocial.org
- 13. Screenshots See: www.lifesocial.org
- 14. Screenshots See: www.lifesocial.org
- 15. How does this work? What is the architecture beneath?
- 16. Architecture Overview on LifeSocial.KOM Extendable framework for user interface components Stand-alone applications, core functionality and optional functionality of the system. Extendable. Caching of data objects and messages Monitoring of the quality of service Low-delay user-to-user communication Storage (store, modify, retrieve, delete) Distributed storage and replication Organization of nodes in an overlay network Standard Internet protocols
- 17. Challenges and Lessons Learned Interconnecting the peers Overlay needed for ID-based, consistent routing Issues: For academia (Chord, CAN) Different purpose (Kademlia, unstructured overlays) Homebrew: design and evaluation takes time FreePastry Data Storage / Replication Reliable + consistent data storage: read, write, update Load balancing? Even more complicated PAST, comes with FreePastry ID-based storage and retrieval
- 18. Example for Distributed Linked Lists
- 19. SECURITY Security is 2nd most important After efficiency! Goals: Authentification of hosts Encrypted messaging Access control lists (on sensible data) Idea: Use PublicKeys as NodeIDs allows instant authentication and encrypted communication Encrypt all stored data with unique symmetric key Encrypt the symmetric key for all privileged reader Attach the ENCRYPTED symmetric key to the encrypted data
- 20. Simple Idea of Distributed Access Control How to provide Access Control in a distributed environment? Goal: Assign read-rights on objects to privileged users Mechanism: Sym. encrypted objects, asym. encrypted sym. keys See: K. Graffi et al., “Practical Security in P2P-based Social Networks” In: IEEE Local Computer Networks '09 (IEEE LCN’09), October 2009. For
- 21. When it is distributed, how do you know that it works? What is the quality?
- 22. Monitoring and Evaluation Integration of a monitoring solution Totally distributed, precise and cheap Global system statistics Statistics on CPU / bandwidth usage Data retrieval delays Messages sent / received Number of peers Objects in Cache Friends and clustering coefficient … Statistical information: avg, min, max, standard dev., sum,... See: K. Graffi et al., “Monitoring and Management of Structured Peer-to-Peer Systems” In: IEEE Peer-to-Peer Computing '09 (IEEE P2P’09), September 2009.
- 26. Our Monitoring Solution for P2P Systems Statistic updates Periodically sent to parent peer Aggregated in each node ( same size) Topology Tree based information architecture Uses p2p overlay functionality [µ,σ,σ²,Σ, min,max] [µ,σ,σ²,Σ, min,max] [µ,σ,σ²,Σ, min,max] See: K. Graffi et al., “Monitoring and Management of P2P Systems” In: IEEE Peer-to-Peer Computing '09 (IEEE P2P’09), September 2009. 0 1 1 10 50 20 30 40 45 15 0,09 0,2 0,3 0,4 0,51 0,6 0,75 0,9
- 27. Our Monitoring Solution for P2P Systems Topology Tree based information architecture Uses p2p overlay functionality Statistic updates Periodically sent to parent peer Aggregated in each node ( same size) [µ,σ,σ²,Σ, min, max] [µ,σ,σ²,Σ, min, max] [µ,σ,σ²,Σ, min, max] 0 1 1 10 50 20 30 40 45 15 0,09 0,2 0,3 0,4 0,51 0,6 0,75 0,9
- 29. See: www.lifesocial.org See: www.lifesocial.org
- 30. Summary IT solutions for social networks Currently centralized and very costly Scales only with high monetary invests Distributed, p2p-based platforms Data storage is totally distributed Costs are shared among the users LifeSocial.KOM Operational prototype Secure, reliable storage and messaging Monitoring mechanism to observe (and control) the quality of service Rich, extendable functionality through Plugin-based architecture See videos on www.lifesocial.org Analysis of needs: Users want Storing and searching for content User to user interaction Security System provider want Low operational costs Controlled quality of service High profit Next steps: Integrate management mechanisms Run Internet-wide beta-test Deploy
- 31. Issues and Challenges in Academia Engineering a prototype is not considered as research Programming effort hard to mount How to test large-scale distributed systems? Successfull standalone P2P application known? Filesharing? Skype? is it working now? ??? How needs P2P – we have the cloud! Guaranteed Quality! Controllable costs! Easier to maintain / operate
- 32. Questions? KOM Have a look at: www.lifesocial.org www.skynet-project.com www.kom.tu-darmstadt.de Does my p2p system work?