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Time-Storage Trade-Offs for Cryptographically-Enforced Access Control Jason Crampton Information Security Group Royal Holloway, University of London ESORICS 2011 Traditional Access Control ? SECRET Time-Storage


  1. Time-Storage Trade-Offs for Cryptographically-Enforced Access Control Jason Crampton Information Security Group Royal Holloway, University of London ESORICS 2011

  2. “Traditional” Access Control ? SECRET Time-Storage Trade-Offs/Crampton/ESORICS 2011 2/20

  3. “Traditional” Access Control ? SECRET Allow SECRET Time-Storage Trade-Offs/Crampton/ESORICS 2011 2/20

  4. “Traditional” Access Control ? SECRET Deny SECRET Time-Storage Trade-Offs/Crampton/ESORICS 2011 2/20

  5. “Traditional” Access Control ? SECRET Policy SECRET Enforcement Policy Time-Storage Trade-Offs/Crampton/ESORICS 2011 2/20

  6. Cryptographically-Enforced Access Control xxxxxxxxxxxxxxx Allow xxxxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxx Time-Storage Trade-Offs/Crampton/ESORICS 2011 3/20

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