Cloud-Assisted Mobile-Access Of Privacy Preserving Audited Health Data
Motivated by the privacy issues, curbing the adoption of electronic healthcare systems and the wild success of
cloud service models, we propose to build privacy into mobile healthcare systems with the help of the private cloud. Our
system offers salient features including efficient key management, privacy-preserving data storage, and retrieval, especially
for retrieval at emergencies, and auditability for misusing health data. Specifically, we propose to integrate key management
from pseudorandom number generator for unlinkability, a secure indexing method for privacy preserving keyword search
which hides both search and access patterns based on redundancy, and integrate the concept of attribute based encryption
with threshold signing for providing role-based access control with auditability to prevent potential misbehavior, in both
normal and emergency cases.
Keywords—Access control, Auditability, eHealth, Privacy.