Perfectly-Secure Key Distribution for Dynamic Conferences
CRYPTO '92 Proceedings of the 12th Annual International Cryptology Conference on Advances in Cryptology
Defending against Sybil Attacks in Sensor Networks
ICDCSW '05 Proceedings of the Second International Workshop on Security in Distributed Computing Systems (SDCS) (ICDCSW'05) - Volume 02
A Deterministic Pairwise Key Pre-distribution Scheme for Mobile Sensor Networks
SECURECOMM '05 Proceedings of the First International Conference on Security and Privacy for Emerging Areas in Communications Networks
TinyECC: A Configurable Library for Elliptic Curve Cryptography in Wireless Sensor Networks
IPSN '08 Proceedings of the 7th international conference on Information processing in sensor networks
Body area networking standardization: present and future directions
Proceedings of the ICST 2nd international conference on Body area networks
Modular context-aware access control for medical sensor networks
Proceedings of the 15th ACM symposium on Access control models and technologies
Sensor network security for pervasive e-health
Security and Communication Networks
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Key agreement and digital certificates allow bootstrapping secure communication links and verifying identities or information. Thus, they are the cornerstone of many basic security functionalities. However, the resource-constrained nature of wireless sensor nodes limits the use of traditional solutions in wireless sensor networks. We propose a novel scheme allowing for fast, resource-friendly, and distributed key agreement and verification of information, featuring the efficiency of symmetric-key cryptography and the functionality of public-key certificates. The core idea of our system relies on the cryptographic association of identification information with polynomial shares. This concept allows the base station of a sensor network to sign node identification and configuration information such as routing addresses or access control roles. The information is signed by means of the polynomial shares distributed to nodes creating a lightweight digital certificate for each node. The proposed system operates in a fully stand-alone and distributed way, being able to perform a combined key agreement and lightweight digital certificate verification handshake within a few milliseconds with very low memory requirements.