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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. Selfishness. Motivation.

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

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  1. 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)

  2. Outline • Motivation • Preliminaries • The proposed scheme • Performance evaluation 2 2

  3. Selfishness Motivation … I2 I1 S D Im intermediate nodes • 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

  4. 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

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

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

  7. The proposed scheme

  8. The proposed scheme

  9. The proposed scheme

  10. The proposed scheme • Data transfer phase with payment mechanism

  11. Performance evaluation

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

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