NDLI: C4W: An Energy Efficient Public Key Cryptosystem for Large-Scale Wireless Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Qi Jing Jianbin Hu Zhong Chen
Copyright Year	2006
Description	Author affiliation: Sch. of Electron. Eng., Peking Univ., Beijing (Qi Jing; Jianbin Hu; Zhong Chen)
Abstract	With hardware support and software optimization, public key cryptography (PKC) has been announced feasible on micro sensors recently. A number of experiments proved that the elliptic curve cryptography (ECC) is more suitable for resource constraint motes compared with RSA, But even ECC based protocols still cost too much energy. In this paper, we propose C4W, an identity-based public key infrastructure specially designed for wireless sensor networks (WSNs), in which all nodes can generate other's ECC public keys directly from their identities. Without certificates, no energy will be consumed for certificates communication and verification, which makes C4W especially energy efficient. C4W uses a protocol without certificates to realize mutual authentication and key agreement. Compared with a simplified SSL (SSSL) protocol using an abbreviated certificate, C4W consumes lower than 35% energy, and the communication consumption of C4W is only 28.5% of that consumed by SSSL. Furthermore, the energy analysis of C4W illuminates that the expensive public key computational cost is almost neglectable compared with the heavy communication consumption in a large-scale WSNs, which gives the asymmetric key management in WSNs a bright future
Starting Page	827
Ending Page	832
File Size	180802
Page Count	6
File Format	PDF
ISBN	1424405068
DOI	10.1109/MOBHOC.2006.278660
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-09
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Costs Identity-based encryption Public key Public key cryptography Elliptic curve cryptography Energy efficiency Hardware Large-scale systems Cryptographic protocols
Content Type	Text
Resource Type	Article

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