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Proactive Threshold Cryptosystem for EPC Tags

Proactive Threshold Cryptosystem for EPC Tags,J. GARCIA-ALFARO,M. BARBEAU,E. KRANAKIS

Proactive Threshold Cryptosystem for EPC Tags  
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We define three privacy-preserving solutions to the problem of distributing secrets between manufacturers and vendors of items labeled with Electronic Product Code (EPC) Gen2 tags. The so- lutions rely on the use of an anonymous threshold secret shar- ing scheme that allows the exchange of blinded information be- tween readers and tags. Moreover, our secret sharing scheme allows self-renewal of shares with secret preservation between asynchronous shareholders. The first two solutions address the eavesdropping and rogue scanning threats. The third solution mitigates as well tracking threats.
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