U-healthcare system protecting privacy based on cloaker

Recently, u-healthcare system has been widely used. Therefore many people are able to manage their health at anytime and anywhere. Especially, implantable device is used to care untreatable diseases. In u-healthcare environment with implantable device, privacy protection and secure access control mechanism support are important. When a patient wants to care at another hospital, implantable devices have to be accessed by doctor easily. However, these objectives are difficult to reconcile. To solve this problem, we propose u-healthcare system which provides a secure access control and protects the privacy of patient who uses implantable device.