Robust watermarking of databases in order-preserving encrypted domain
保序加密域中数据库的鲁棒水印
順序を維持する暗号化ドメインでのデータベースの堅牢な透かし
순서를 보존하는 암호화된 도메인에서 데이터베이스의 강력한 워터마킹
Robusta marca de agua de las bases de datos en un dominio cifrado que conserva el orden
Filigranage robuste des bases de données dans un domaine crypté préservant l'ordre
Надежные водяные знаки баз данных в зашифрованном домене, сохраняющем порядок
Shijun XIANG 项世军, Guanqi RUAN 阮观奇, Hao LI 李豪, Jiayong HE 何嘉勇
College of Information Science and Technology, Jinan University, Guangzhou 510632, China
中国 广州 暨南大学信息科学技术学院
Security of databases has always been a hot topic in the field of information security. Privacy protection can be realized by encrypting data, while data copyright can be protected by using digital watermarking technology. By combining these two technologies, a database’s copyright and privacy problems in the cloud can be effectively solved. Based on order-preserving encryption scheme (OPES), circular histogram and digital watermarking technology, this paper proposes a new robust watermarking scheme for protection of databases in the encrypted domain.
Firstly, the OPES is used to encrypt data to avoid exposing the data in the cloud. Then, the encrypted data are grouped and modified by the use of a circular histogram for embedding a digital watermark. The common data query operations in database are available for the encrypted watermarking database. In receivers, the digital watermark and the original data can be restored through a secret key and a key table. Experimental results have shown that the proposed algorithm is robust against common database attacks in the encrypted domain.
