Synchronizing encrypted data on Android

Smartphones synchronize various, personal, and private data “into the cloud,” where they are controlled by third parties. Such a loss of control could be avoided by restricting synchronization to encrypted data. This thesis should survey risks and challenges and evaluate existing solutions for the operating system Android. Depending on your preferences and experiences your thesis might include a proof-of-concept implementation for a specific type of personal data, such as contacts, appointments, or files.