@InProceedings{	  ronald-6,
  title		= {{Proxy Re-Encryption in a Privacy-Preserving Cloud
		  Computing DRM Scheme}},
  author	= {Ronald Petrlic},
  booktitle	= {{Cyberspace Safety and Security}},
  year		= {2012},
  pages		= {194--211},
  publisher	= {Springer-Verlag Berlin Heidelberg},
  abstract	= {In a cloud-computing scenario where users buy software
		  from software providers and execute it at computing
		  centers, a digital rights management (DRM) system has to be
		  in place to check the software licenses during each
		  software execution. However, the exposure of users to
		  privacy invasion in the presence of DRM systems is
		  problematic.We come up with a concept that unites software
		  providers' and users' demands for a secure and
		  privacy-preserving DRM system for cloud computing. The
		  employment of proxy re-encryption allows for a prevention
		  of pro file building (under pseudonym) of users by any
		  party.}
}