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Efficient Schemes for Anonymous Yet Authorized and Bounded Use of Cloud Resources

  • Daniel Slamanig
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7118)

Abstract

In this paper we introduce anonymous yet authorized and bounded cloud resource schemes. Contrary to many other approaches to security and privacy in the cloud, we aim at hiding behavioral information, i.e. consumption patterns, of users consuming their cloud resources, e.g. CPU time or storage space, from a cloud provider. More precisely, users should be able to purchase a contingent of resources from a cloud provider and be able to anonymously and unlinkably consume their resources till their limit (bound) is reached. Furthermore, they can also reclaim these resources back anonymously, e.g. if they delete some stored data. We present a definition of such schemes along with a security model and present an instantiation based on Camenisch-Lysyanskaya signatures. Then, we extend the scheme to another scheme providing even more privacy for users, i.e. by even hiding the issued resource limit (bound) during interactions and thus providing full anonymity to users, and present some useful extensions for both schemes. We also support our theoretical claims with experimental results obtained from an implementation that show the practicality of our schemes.

Keywords

Signature Scheme Cloud Provider Blind Signature Cloud Resource Valid Signature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Daniel Slamanig
    • 1
  1. 1.Carinthia University of Applied SciencesKlagenfurtAustria

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