MobiGemini: Sensitive-Based Data and Resource Protection Framework for Mobile Device

摘要

With the popularity of smartphones and the rapid development of mobile internet, smartphone becomes an important tool that store sensitive data of owner. Encryption nat-urally becomes a necessary means of protec-tion. In certain situations, this is inadequate, as user may be coerced to hand over decryption keys or passwords of sensitive APP (AliPay) on mobile device. Therefore, only encryption cannot protect sensitive APP and privacy data stored on user's smartphone. To address these obstacles, we design a protection system called MobiGemini. It enables automatic unin-stalling service that can immediately uninstall multiple APP at same time, and also enabling plausibly deniable encryption (PDE) on mo-bile devices by hiding encrypted volume with-in random data in free space of cache partition. We improve the key store way of previous PDE schemes on mobile device. The evalua-tion results show that the scheme introduces a few overhead compared with original android system enabling full disk encryption.