Abstract: A Personal Health Record service allows a patient to create,manage, and control her personal health data in one place through the web,which has made the storage, retrieval, and sharing of the medical informationmore efficient. Especially, each patient is promised the full control of hermedical records and can hare her health data with a wide range of users,including healthcare providers, family members or friends. Due to the high costof building and maintaining specialized data centres, many Personal HealthRecord services are outsourced to or provided by third-party service providers,for example, Microsoft HealthVault1. Recently, architectures of storingPersonal Health Record in cloud computing have been proposed in. While it isexciting to have convenient Personal Health Record services for everyone, thereare many security and privacy risks the value of home-based health monitoringhas been recognized lately Studies 24-hour ambulatory monitoring System whichPerform home-based health monitoring tasks. In our framework, there aremultiple SDs, multiple owners, multiple AAs, and multiple users. In addition,The attribute hierarchy of files – leaf nodes are atomic file categories whileinternal nodes are compound categories. Dark boxes are the categories that aPSD’s data reader has access to. two ABE systems re involved: for each PSD theYWRL’s revocable KP-ABE scheme is adopted; for each PUD, our proposed revocableMA-ABE scheme is used. The framework is illustrated in We term the users havingread and write access as data readers and contributors, respectively, SystemSetup and Key Distribution. The system first defines a common universe of dataattributes shared by every PSD, such as “basic profile”, “medical history”,“allergies”, and “prescriptions”. An emergency attribute is also defined forbreak-glass access. Each Personal Health Record owner’s client applicationgenerates its corresponding public/master keys. The public keys can bepublished via user’s profile in an online healthcare social-network (HSN).There are two ways for distributing secret keys