Authors: Chun-Ta Li and Min-Shiang Hwang Reporter: Chun-Ta Li (李俊達)

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Presentation transcript:

Authors: Chun-Ta Li and Min-Shiang Hwang Reporter: Chun-Ta Li (李俊達) 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

Motivation Ad hoc communications Resource-constrained devices Selfishness Motivation S I1 I2 … Im D 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 intermediate nodes

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

Preliminaries Identity-based encryption (IBE) scheme Setup (KGC, Key Generator Center) Extract Publish the public parameters

Preliminaries (cont.) Identity-based encryption (IBE) scheme Encrypt (message M) Decrypt

The proposed scheme

The proposed scheme

The proposed scheme

The proposed scheme Data transfer phase with payment mechanism

Performance evaluation

THa: TSym: TSig: TVer: TEn: TDe: TEC:

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