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In order to protect privacy of RFID tag against malicious tag tracing activities, many RFID authentication protocols with the secret key update scheme have been proposed to support forward security. These proposals are symmetric key based in common due to the lack of computational resource to perform heavy asymmetric cryptographic operations in low-cost tags. In this paper, we have demonstrated that...
Authentication and privacy-preserving are two important security properties for a cryptographic protocol for RFID tags. However, providing privacy-preserving often increases the cost of looking up a tag in the database. In response to this issue, Ryu and Takagi proposed an RFID authentication protocol which provides a way to trade-off security and memory for performance. In this paper, we first point...
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