FragDB - Secure Localized Storage Based on Super-Distributed RFID-Tag Infrastructures

Smart environments and wearables will make the storage and subsequent sharing of digitized multimedia diaries and meeting protocols - whom we meet, or what we say or do - cheap and easy. However, controlling access to this data will become cumbersome if traditional forms of access control are to be used: overly restrictive rules might deny the potential of data sharing, while a lack of control could easily lead to Orwellian surveillance scenarios. This paper presents FragDB, a storage concept based on localized access control, where data storage and retrieval are bound to a specific place, rather than the knowledge of a particular password or certificate. FragDB uses tiny RFID tags embedded in the environment to compute a local key that is used to encrypt and decrypt data in a global storage system. We describe the design and implementation of an initial prototype.