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A Secure 6LoWPAN Re-transmission Mechanism for Packet Fragmentation against Replay Attacks

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2009, 14(10), pp.101-110
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

HYUNGON KIM 1

1목포대학교

Accredited

ABSTRACT

The 6LoWPAN(IPv6 Low-power Wireless Personal Area Network) performs IPv6 header compression, TCP/UDP/ICMP header compression, packet fragmentation and re-assemble to transmit IPv6 packet over IEEE 802.15.4 MAC/PHY. However, from the point of view of security, It has the existing security threats issued by IP packet fragmenting and reassembling, and new security threats issued by 6LoWPAN packet fragmenting and reassembling would be introduced additionally. If fragmented packets are retransmitted by replay attacks frequently, sensor nodes will be confronted with the communication disruption. This paper analysis security threats introduced by 6LoWPAN fragmenting and reassembling, and proposes a re-transmission mechanism that could minimize re-transmission to be issued by replay attacks. Re-transmission procedure and fragmented packet structure based on the 6LoWPAN standard(RFC4944) are designed. We estimate also re-transmission delay of the proposed mechanism. The mechanism utilizes timestamp, nonce, and checksum to protect replay attacks. It could minimize reassemble buffer overflow, waste of computing resource, node rebooting etc., by removing packet fragmentation and reassemble unnecessary.

Citation status

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