  Digital healthcare systems are very popular lately, as they provide a variety
of helpful means to monitor people's health state as well as to protect people
against an unexpected health situation. These systems contain a huge amount of
personal information in a form of electronic health records that are not
allowed to be disclosed to unauthorized users. Hence, health data and
information need to be protected against attacks and thefts. In this paper, we
propose a secure distributed architecture for healthcare data storage and
analysis. It uses a novel security model to rigorously control permissions of
accessing sensitive data in the system, as well as to protect the transmitted
data between distributed system servers and nodes. The model also satisfies the
NIST security requirements. Thorough experimental results show that the model
is very promising.
