Handbook of Applied Cryptography
Handbook of Applied Cryptography
A key-management scheme for distributed sensor networks
Proceedings of the 9th ACM conference on Computer and communications security
Multiple layer encryption for multicast groups
Proceedings of the IFIP TC6/TC11 Sixth Joint Working Conference on Communications and Multimedia Security: Advanced Communications and Multimedia Security
A Provably Secure Additive and Multiplicative Privacy Homomorphism
ISC '02 Proceedings of the 5th International Conference on Information Security
A Concrete Security Treatment of Symmetric Encryption
FOCS '97 Proceedings of the 38th Annual Symposium on Foundations of Computer Science
Security in wireless sensor networks
Communications of the ACM - Wireless sensor networks
E.cient Aggregation of encrypted data in Wireless Sensor Networks
MOBIQUITOUS '05 Proceedings of the The Second Annual International Conference on Mobile and Ubiquitous Systems: Networking and Services
Public-key encryption in a multi-user setting: security proofs and improvements
EUROCRYPT'00 Proceedings of the 19th international conference on Theory and application of cryptographic techniques
A secure and resilient WSN roadside architecture for intelligent transport systems
WiSec '08 Proceedings of the first ACM conference on Wireless network security
Secure hierarchical data aggregation in wireless sensor networks
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Secure overlays: making static key distribution schemes work with mobile base stations in WSNs
WWIC'10 Proceedings of the 8th international conference on Wired/Wireless Internet Communications
Protection of consumer data in the smart grid compliant with the German smart metering guideline
Proceedings of the first ACM workshop on Smart energy grid security
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Data aggregation has been put forward as an essential technique to achieve power efficiency in sensor networks. Data aggregation consists of processing data collected by source nodes at each intermediate node enroute to the sink in order to reduce redundancy and minimize bandwidth usage. The deployment of sensor networks in hostile environments call for security measures such as data encryption and authentication to prevent data tampering by intruders or disclosure by compromised nodes. Aggregation of encrypted and/or integrity-protected data by intermediate nodes that are not necessarily trusted due to potential node compromise is a challenging problem. We propose a secure data aggregation scheme that ensures that sensors participating to the aggregation mechanism do not have access to the content of the data while adding their sensed values thanks to the use of an efficient homomorphic encryption scheme. We provide a layered secure aggregation mechanism and the related key attribution algorithm that limits the impact of security threats such as node compromises. We also evaluate the robustness of the scheme against node failures and show that such failures are efficiently recovered by a small subset of nodes that are at most m hops away from the failure.