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A secure routing protocol with payment mechanism to prevent node selfishness in mobile ad hoc networks. Authors: Chun-Ta Li and Min-Shiang Hwang Reporter: Chun-Ta Li ( 李俊達 ). Outline. Motivation Preliminaries The proposed scheme Performance evaluation. 2. 2. Selfishness. Motivation. - PowerPoint PPT Presentation
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A secure routing protocol with payment mechanism to prevent node selfishness in mobile ad hoc networks
Authors: Chun-Ta Li and Min-Shiang Hwang
Reporter: Chun-Ta Li (李俊達 )
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Outline Motivation Preliminaries The proposed scheme Performance evaluation
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Motivation Ad hoc communications
Communication nodes must act as routers (routing) for themselves
Rely on other nodes to relay communication data Resource-constrained devices The behavior of node selfishness
Refuse to forward packets to others (stop forwarding attack)
Discard route-discovery requests from others
S DI1 ImI2 …
intermediate nodes
Selfishness
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Motivation (cont.) Payment system Nuglets (virtual currency)
Source node pays for the transmission request Intermediate nodes all gained from the request Advantage:
Prevent networks from packet flooding attacks Promote a selfless environment and enforce node cooperation in
MANETs
Requirements Non-repudiation, impersonation/tampering attacks Generate a dynamic session key Detection of malicious intermediate nodes
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Preliminaries Identity-based encryption (IBE) scheme
Setup (KGC, Key Generator Center)
Extract
Publish the public parameters
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Preliminaries (cont.) Identity-based encryption (IBE) scheme
Encrypt (message M)
Decrypt
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The proposed scheme
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The proposed scheme
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The proposed scheme
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The proposed scheme Data transfer phase with payment mechanism
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Performance evaluation
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THa:
TSym:
TSig:
TVer:
TEn:
TDe:
TEC: