Kallima: a tag-reader protocol for privacy enhanced RFID system

  • Authors:

  • Yusuke Doi;Shirou Wakayama;Masahiro Ishiyama;Satoshi Ozaki;Atsushi Inoue

  • Affiliations:

  • Communication Platform Laboratory, Corporate Research & Development Center, TOSHIBA Corporation, Kawasaki, Kanagawa, Japan;Communication Platform Laboratory, Corporate Research & Development Center, TOSHIBA Corporation, Kawasaki, Kanagawa, Japan;Communication Platform Laboratory, Corporate Research & Development Center, TOSHIBA Corporation, Kawasaki, Kanagawa, Japan;Communication Platform Laboratory, Corporate Research & Development Center, TOSHIBA Corporation, Kawasaki, Kanagawa, Japan;Communication Platform Laboratory, Corporate Research & Development Center, TOSHIBA Corporation, Kawasaki, Kanagawa, Japan

  • Venue:
  • EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
  • Year:
  • 2005

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Abstract

Privacy is a major concern with RFID tags and many solutions have been proposed. As many approach requires secure hash function on each tag, cost of tags imposed by those solutions is significantly high for wide development. We propose a protocol that uses pre-calculated Bloom filter to send tag identity for increased privacy with little additional cost per tag. In our approach, secure hash function calculation is done in tag production phase and each tag does not have any hash functions. Instead, each tag must have random number generator and volatile memory.