PathGES: An Efficient and Secure Graph Encryption Scheme for Shortest Path Queries
Francesca Falzon, Esha Ghosh, Kenneth G. Paterson, Roberto Tamassia · 2024
The increasing importance of graph databases and cloud storage services prompts the study of private queries on graphs. We propose PathGES, a graph encryption scheme (GES) for single-pair shortest path queries. PathGES is efficient and mitigates the state-of-the-art attack by Falzon and Paterson (2022) on the GES by Ghosh, Kamara, and Tamassia (2021), while only incurring an additional logarithmic factor in storage overhead. PathGES leverages a novel data structure that minimizes leakage and server computation.