摘要：The RFID system is the core tech nolo gy used in b uilding a ub iquito us env iro nment. This sy stem u sesradio frequency identification as an alternative to bar-cod e identification. The RFID system has b ecom e veryp opu lar, d ue to its variou s streng ths such as recog nition sp eed and n on-tou ch model. Ho wever, so mep ro blems remain , as th e low-cost tag is operated via queries, leading to information ex posu re and priv acyen croachment. A n umb er of approaches have been used to increase th e s ecurity of the system, bu t th elo w-cost tag, which has a capability o f b etween 5,000 ~10,000 gates, can o nly allocate 250 ~3 ,0 00 g ates tos ecurity. Therefore, th e current stud y will provide a reciprocal auth en tication so lu tion that can be u sed withlo w-cost RFID sy stem s, by separating 64 b it keys an d minimizing calculation s. Ex isting systems divid e a9 6 bit key in to 4 parts. Ho wever, the p ro posed sy stem red uces th e key to 32 bits, an d reduces theco mmun ication s down to 5 from 7. Further, an ad ditional ran dom n umb er is ad ded to the existing twon umb ers, to increase security
