Title :
Secure Mediation of Join Queries by Processing Ciphertexts
Author :
Biskup, Joachim ; Tsatedem, Christian ; Wiese, Lena
Author_Institution :
Univ. Dortmund, Dortmund
Abstract :
In a secure mediated information system, confidentiality is one of the main concerns when transmitting data from datasources to clients via a mediator. We present three approaches that allow a mediator to compute a JOIN operation on encrypted relations; each approach uses a different encryption schema. We adapt these schemes to the mediator architecture and provide a comprehensive description of the resulting protocols. A first security analysis is also given.
Keywords :
authorisation; cryptography; query processing; ciphertext; credential based access control; datasource; encryption; join queries; mediator architecture; secure mediated information system; security analysis; Access control; Access protocols; Computer architecture; Contracts; Cryptography; Data processing; Data security; Information security; Information systems; Mediation; commutative encryption; confidentiality; credential based access control; database as a service; encrypted data processing; homomorphic encryption; secure mediation;
Conference_Titel :
Data Engineering Workshop, 2007 IEEE 23rd International Conference on
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-0832-0
Electronic_ISBN :
978-1-4244-0832-0
DOI :
10.1109/ICDEW.2007.4401059
