Scribble legalization cryptographic aspect based on data access control for steam count

Recently, healthcare applications adopt the advents of cloud technologies. Electronic Health Records (EHR) plays a vital role in healthcare environments. Thus, the proper usage and protection of EHR systems enabled the growth of cloud based healthcare applications which implies the patients-safety of their sensitive information. However, the data owner should be online in order to send the PRE keys to the CSP in a timely fashion, to prevent the revoked user from accessing the future data. The delay of issuing the PRE keys may cause potential.