Hybrid Attribute-Based Encryption and Re-Encryption for Scalable Mobile Applications in Clouds

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Provided by: University of Waterloo
Topic: Data Management
Format: PDF
Outsourcing data to the cloud is beneficial for reasons of economy, scalability, and accessibility, but significant technical challenges remain. Sensitive data stored in the cloud must be protected from being read in the clear by a cloud provider that is honest-but-curious. Additionally, cloud-based data is increasingly being accessed by resource-constrained mobile devices for which the processing and communication cost must be minimized. Novel modifications to attribute-based encryption are proposed to allow authorized users access to cloud data based on the satisfaction of required attributes such that the higher computational load from cryptographic operations is assigned to the cloud provider.
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