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Sökning: WFRF:(Leonardo C) > (2000-2004)

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1.
  • Martucci, Leonardo, et al. (författare)
  • A Lightweight Distributed Group Authentication Mechanism
  • 2004
  • Konferensbidrag (refereegranskat)abstract
    • Identifying trustable devices and establishing secure tunnels between them in ad hoc network environments is a difficult task because it has to be quick, inexpensive and secure. Certificate-based authentication mechanisms are too expensive for small devices. The use of such mechanisms must be controlled and reserved for special situations, (e.g. banking applications) but not for everyday transactions. In addition, indiscriminate use of asymmetric ciphering and certificate-based authentication is a shortcut to battery exhaustion attacks. This paper describes a lightweight distributed group authentication mechanism suitable for ad hoc network devices requirements. We introduce the concept of group authentication, which target is not the individual identification of devices, but to verify if a device belongs or does not belong to a trusted group. The proposed mechanism verifies if devices have a pre-shared secret and sets new cipher keys each time it runs. This mechanism requires loose synchronization among the devices real time clocks to thwart replay attacks. It also mitigates the effects of battery exhaustion attacks due to its lightness
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2.
  • Martucci, Leonardo, et al. (författare)
  • A Trust-Based Security Architecture for Small and Medium-Sized Mobile Ad Hoc Networks
  • 2004
  • Konferensbidrag (refereegranskat)abstract
    • This paper describes a trust based security architecture for small/medium-sized mobile ad hoc networks. We designed and implemented a security architecture that extends the traditional PKI model, assigning variable trust values to digital certificates and issuing credentials to grant access to network services. Trust values are not static; they vary during regular network operation as network users provoke security incidents. Depending on the seriousness of the incidents the trust value associated to the offenders certificate will vary. Eventually, a series of security incidents may end up with the certificate revocation. We also developed a security framework for designing secure applications and built prototypes to test and validate our architecture. We considered service-oriented ad hoc networks, where every mobile device is classified as service providers or service users
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  • Resultat 1-2 av 2
Typ av publikation
konferensbidrag (2)
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refereegranskat (2)
Författare/redaktör
Martucci, Leonardo (2)
Carvalho, Tereza C.M ... (2)
Ruggiero, Wilson V. (2)
Schweitzer, Christia ... (1)
Venturini, Yeda R. (1)
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Karlstads universitet (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)
År
2004 (2)

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