1 Partition and multi-path transmission-An encryption- free reputation sharing protocol in Gnutella-like peer-to-peer network Author: X. X. Ma, and Z. G. Q in Source: Computer Communicatio ns, In press Speaker: Shu-Fen Chiou ( 邱邱邱 )
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Partition and multi-path transmission-An encryption-free reputation sharing protocol in Gnutella-like peer-to-peer network
Author: X. X. Ma, and Z. G. QinSource: Computer Communications, In pressSpeaker: Shu-Fen Chiou ( 邱淑芬 )
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Outline Introduction Motivation Polling protocol Splitting and recomposing of the node’s r
eputation value Shamir-based multi-path transmission Conclusion Comments
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Introduction
Gnutella network Decentralized network
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Introduction
Gnutella-like network
A
B
Query
1.mp3 Reply
CAsk B’s reputation value s
Reply APk(s) Problems:A’s public key created by inself without validation
Initial node
polling node
Responding node
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Motivation
When polling nodes transmit the responding node’s reputation nodes: Encryption free protocol Integrity Man-in-the-middle attack
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Polling protocol
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Splitting and recomposing of the node’s reputation value
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Shamir-based multi-path transmission
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Conclusion
Proposed an encryption-free reputation sharing protocol for Gnutella-like P2P network.
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Comments
Polling nodes: Nodes can sent the wrong msg. Nodes can not be trusted. Malicious nodes can be polling nodes.
Transmission overhead.