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Enhancing Security Using the Discarded Security Information in Mobile WiMAX Networks
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BibTeX
@MISC{Kim_enhancingsecurity,
author = {Youngwook Kim and Saewoong Bahk},
title = {Enhancing Security Using the Discarded Security Information in Mobile WiMAX Networks},
year = {}
}
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Abstract
Cipher-based Message Authentication Code (CMAC) for security, some bits of it are truncated and also while deriving a key hier-archy, some part of keying material is discarded. In this paper, we exploit these discarded information to enhance the security in M-WiMAX, and consider two cases of discarded information. Firstly, we propose to use the truncated upper 64-bits of CMAC, which we name Shared Authentication Information (SAI), to complement the security breach in the signalling protocol which is vulnerable to DDoS attack in M-WiMAX. Secondly, we use the truncated 192-bits of Master Session Key (MSK), which we name Shared Authentication Key (SAK), as a temporary authentication root key for inter-domain or inter-authenticator handover. The purpose of using SAK is to reduce the latency for authentication during handover. As this paper opens a possibility of using such discarded security information for enhancing security, we may apply this approach to some other security systems in a similar way. I.
Keyphrases
discarded security information mobile wimax network shared authentication information inter-authenticator handover security breach truncated 192-bits authentication key temporary authentication root key ddos attack master session key similar way security system key hier-archy truncated upper 64-bits signalling protocol cipher-based message authentication code discarded information
