Pavan: A privacy-preserving system for DB-as-a-Service

There is a significant security challenge when database systems are deployed over the cloud and offered as DataBaseas-a-Service. The current encryption schemes are only partially homomorphic, which means they are designed to enable only one particular type of computation to be carried out on the encrypted data. To address these challenges, we introduce Pavan, a system that securely stores data in a cloud database while still enabling encrypted data to be processed. Pavan enables query processing with an order-preserving partially homomorphic encryption scheme. For data stored in the cloud, we show that Pavan is a practical system that preserves data privacy with reasonable overhead at the same time enable data processing and sharing with multiple users when it is outsourced on the cloud. (C) 2021 The Korean Institute of Communications and Information Sciences (KICS). Publishing services by Elsevier B.V.

Automated summary

Pavan is a practical system that securely stores data in a cloud database while still enabling encrypted data to be processed. It uses an order-preserving partially homomorphic encryption scheme for query processing, allowing data privacy preservation with reasonable overhead and enabling data processing and sharing with multiple users when outsourced on the cloud.