T-DB: Toward Fully Functional Transparent Encrypted Databases in DBaaS Framework
This addresses the problem of secure and functional database outsourcing for individuals and organizations using DBaaS, though it appears incremental as it builds on existing encryption and framework concepts.
The paper tackles the conflict between data secrecy and utilization in outsourced relational databases by proposing T-DB, a transparent encrypted database system that allows users to query encrypted data as usual with perfect precision and outstanding performance in cloud environments.
Individuals and organizations tend to migrate their data to clouds, especially in a DataBase as a Service (DBaaS) pattern. The major obstacle is the conflict between secrecy and utilization of the relational database to be outsourced. We address this obstacle with a Transparent DataBase (T-DB) system strictly following the unmodified DBaaS framework. A database owner outsources an encrypted database to a cloud platform, needing only to store the secret keys for encryption and an empty table header for the database; the database users can make almost all types of queries on the encrypted database as usual; and the cloud can process ciphertext queries as if the database were not encrypted. Experimentations in realistic cloud environments demonstrate that T-DB has perfect query answer precision and outstanding performance.