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Published in:
2005 | OriginalPaper | Chapter
Kallima: A Tag-Reader Protocol for Privacy Enhanced RFID System
Authors : Yusuke Doi, Shirou Wakayama, Masahiro Ishiyama, Satoshi Ozaki, Atsushi Inoue
Published in: Embedded and Ubiquitous Computing – EUC 2005 Workshops
Publisher: Springer Berlin Heidelberg
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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.