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http://dx.doi.org/10.13089/JKIISC.2006.16.4.3

Self Re-Encryption Protocol (SREP) providing Strong Privacy for Low-Cost RFID System  

Park Jeong-Su (Center for Information Security Technologies (CIST), Korea University)
Choi Eun-Young (Center for Information Security Technologies (CIST), Korea University)
Lee Su-Mi (Center for Information Security Technologies (CIST), Korea University)
Lee Dong-Hoon (Center for Information Security Technologies (CIST), Korea University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.16, no.4, 2006 , pp. 3-12 More about this Journal
Abstract
RFID (Radio Frequency Identification) system is expected to play a critical role providing widespread services in the ubiquitous period. However, widespread use of RFID tags may create new threats to the privacy of individuals such as information leakage and traceability. It is difficult to solve the privacy problems because a tag has the limited computing power that is not the adequate resource to support the general encryption. Although the scheme of [2] protects the consumer privacy using an external agent, a tag should compute exponential operation needed high cost. We propose Self Re-Encryption Protocol (SREP) which provides song privacy without assisting of any external agent. Our SREP is well suitable to low-cost RFID system since it only needs multiplication and exclusive-or operation.
Keywords
Re-encryption; Privacy; Low-cost tag; RFID system; Ubiquitous environment;
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