A Data Protection Scheme via Isolating Android Partitions

With the continuous development of Android devices, the sensitive data of users have been leaked and maliciously deleted. In this article, a data security protection scheme based on TF card is designed to meet the security requirements of the physical isolation of data in different scenarios for users. The advantage of the scheme is that the data protection is not achieved by using chips or other peripheral devices. In order to achieve this goal, the scheme builds an ecosystem exactly like the normal system on the TF card. This article introduces the design and implementation of the private zone. The prototype of the private zone is realized on the Android related mobile phones and can be easily transplanted to other Android embedded devices. At the same time, in order to illustrate the usage and security of the private zone, this article makes some experiments to evaluate the performance cost between the normal system and the private zone. Experimental results show that this method has reasonable performance and can effectively reduce the risk of sensitive information leakage.