ETD

Archivio digitale delle tesi discusse presso l'Università di Pisa

Tesi etd-11272012-094920


Tipo di tesi
Tesi di laurea specialistica
Autore
MANNARI, FILIPPO
URN
etd-11272012-094920
Titolo
Implementation and evaluation of a key management algorithm for confidential contents distribution
Dipartimento
INGEGNERIA
Corso di studi
INGEGNERIA INFORMATICA PER LA GESTIONE D'AZIENDA
Relatori
relatore Dini, Gianluca
relatore Bernardeschi, Cinzia
Parole chiave
  • algoritmo rinnovo chiavi
  • rekeying algorithm
  • servizi broadcast
  • broadcast services
  • comunicazione di gruppo
  • group communication
  • crittografia
  • cryptography
  • MG-LKH
Data inizio appello
13/12/2012
Consultabilità
Non consultabile
Data di rilascio
13/12/2052
Riassunto
This work deals with the issues regarding the distribution of confidential contents in a broadcast service. In particular the interest is focused on the problem of rekeying, that is the process by means of which the broadcast service renews the keys that are used to encrypt the contents. This operation is needed each time that some event, like the leaving of a user from the service, make the renewal of the keys necessary to ensure the secrecy of the contents. In the first part it is possible to find a description of the existing protocols of rekeying, with an eye to their strengths and weaknesses. In the second part instead the work shows an alternative protocol, with a theoretical study about its performance. Finally in the third part there is a description of the implementation of the rekeying algorithm, the performance evaluation made by a campaign of simulations and the comparison with the previous solutions.
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