Volume 4 - Issue 4
A Method for Hiding Link Layer Addresses Using Bloom Filter in Wireless Sensor Networks
- Sangho Park
Sejong University, Seoul, Korea
superh1@gmail.com
- Jihyun Bang
Yonsei University, Seoul, Korea
jh.bang@yonsei.ac.kr
- Mirim Ahn
Agency for Defense Development, Seoul, Korea
mirimahn@hanmail.net
- Woomin Lee
Agency for Defense Development, Seoul, Korea
ewoomin@add.re.kr
- Taekyoung Kwon
Yonsei University, Seoul, Korea
taekyoung@yonsei.ac.kr
Keywords: Link Layer Anonymity, Bloom Filter, Wireless Sensor Networks
Abstract
A unique identifier is necessary for identifying an object, such as a physical equipment used in networks,
a user, and a server, in information systems. Such an identifier can be used not only for identification
but also for authentication and authorization purposes after binding additional information.
However, regarding the wide use of those unique identifiers across multiple systems, a great concern
about privacy is seriously growing because of strong possibilities in collecting personal behaviors
and transactions histories. Various researches are in progress to solve this problem. However, most
of them are related to an identity which is used in software applications. Since it does not guarantee
the anonymity of network addresses which are actually the identity in the lower level of communications,
the network traffic toward specific devices can be easily analyzed. This problem can be more
critical in the networks which should minimize the leakage of traffic information, such as in military
wireless sensor networks. In this paper, we propose a new method that hides a receiver’s address in
the data link layer. Moreover, to prevent attackers from identifying specific traffics, we make it hard
to determine receivers of the traffics. The proposed method is suitable to wireless sensor networks
due to the use of the bloom filter based on an efficient hash function primitive rather than more complex
cryptographic primitives involving heavier computational overhead.