摘要—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Ɋ DQG —: ZLWK WKH SRZHU VXSSO\ RI YROWV UHVSHFWLYHO\ 0HDQZKLOH '& JDLQ DQG SKDVH PDUJLQ RI WKH DPSOLILHU DUH G% DQG GHJUHH : FRUUHVSRQGLQJO\ DQG S) FDSDFLWRU ORDG LV DSSOLHG WR WKH RXWSXW QRGHV RI WKH DPSOLILHU ,W LV QRWHZRUWK\ WKDW WKH SURSRVHG LGHD LV D JRRG FDQGLGDWH IRU ORZ YROWDJH DSSOLFDWLRQV WRR %HFDXVH LW MXVW QHHGV RYHUGULYH YROWDJH ǻ9 WR VWDUW LWV SHUIRUPDQFH $SSO\LQJ WKH SURSRVHG LGHD RQ WKH IROGHG FDVFRGH DPSOLILHU LW DFKLHYHV 61'5 RI G% ZLWK WKH (IIHFWLYH 1XPEHU RI %LWV (12% ELWV UHVSHFWLYHO\ 7KH SURSRVHG &0)% RFFXSLHV DQ DFWLYH DUHD RI —P —P —P )LQDOO\ WKH SURSRVHG VWUXFWXUH LV VLPXODWHG LQ ZKROH SURFHVV FRUQHU FRQGLWLRQ DQG GLIIHUHQW WHPSHUDWXUHV IURP Ԩ WR Ԩ 6LPXODWLRQ UHVXOWV DUH SHUIRUPHG XVLQJ WKH +63,&( %6,0 PRGHO RI D —P &026 WHFKQRORJ\
$evwudfw²6xSSO\ fkdlqv dqg pdqxidfwxulqj v \ vwhpv urexvwqhvv dqg uhvlolhqfh uhvlolhqfh uhvlolhqfh duh iru pdq \ \ xfwlrq SurfHvVhv 7zr grpdlqv duh fuxfldo wr dfklhyh vxfk sxusrvh sxusrvh wkh iruphu lv idvw dqg frpsuhkhqvlyh LRQ PDNLQJ 7KH ODWHU UHIHUV WR WKH LQWHUYHQWLRQ E \ rshudwruv deoh wr ehwwhu lghqwli \ sugrohxwhr \ sugrohxwhwhwhwhwh rshudwhwh rshudwlrqv dlphg dlphg dlphg dw il dw il s lw u ehwwwh u ehwq v v v v v v v v v v u suhvhqwv dq lqwhjudwhg dssurdfk hqfrpsdvvlqj d fskurdwgwg,$ vrdvhwg,dfk wr prqlwru dqg dqg ghwhfw ghwhfw fulwlfdo fulwxdwlrqv ixdwlrqv ixoxOO p vxssruwlqj rshudwruv lq wkh wilhodwlqlqlqlql lqlwh fwlrqdo frqwlqxrxv frqqhfwlrq $ fwlylwlhv lq lq lq wkh frqh frqh frqh frqh frqh frqh frq frq frq frq frq frq gxv dwphwqlwhwwwwwwwwwww qwlqj wkh sursrvhg dssurdfk dqg ghprqvwudwlqj lq dq dxwrpdwhg surgxfwlrq olq olq olq olq olq olqh wkh hiihfwlyhqhvv ri wkh dssurdfk h lqglfdwruv ghprqvwudwhv wkh vrxqgqhvv ri wkh sursrvhg vroxwlrq dqg lpsohphqwdwlrq phwkrgrorj问
7kh euhdgwk ri正确权利vwhlq vwhj \ fdq pdnh lw lw gliilfxow wr wr fkdqjlqjlqwh [w)ru h [dpsoh with eljjhvw vljhvw vljhvw vljoh village wrry wr wr lpsudo jhudog和eh wr wr工作taudlw和此 *3V此 *3V ankhlu 0xowlglvflsolqdu \ whdp froohdjxhv hohphqw ri vudwhj \ vpp vpphwklqj和buduhuhuhqw and wrs和lv and lv and and and
$ phwkrg iru skrwrq hiilflhqw txdqwxp nh \ glvwulexwlrq 4。' div>> @ lv sursrvhg dqjdo \] Ri D VLQJOH SKRWRQ 7KH VWDWHV RI LQGLEGLGDOOORFDO TXELWV DuH PHDVXUHG XVLQJ D FDVFDGH RI LQWHUIHURPHWULF VODJHV Iroorzhg e \ Wlph Uhvroyhg Skrwq FrXQWLQJ> @ 7KH Phwkrg PD \ eh xvhixo lq lpsohfhqwdwlrrrqv ri hqwdqjohiqw edvhg 4。 'surwrfrov zkrvh shuirupdqfh lvlwhg e \ wkh euljkwqhvv ri rqugugog vrxufhv ri qrqfodvvlfdo oljkw oljkw edvhg edvhg edvhg dwlrrq wdnlqj lqwr dffrxqw wkh suhvhfh ri edfnjurxqg qrlvh lqfdwh lqfdwhv wkh srwhqwldo ri pxowltxelw hqfrgfffglqj iru qhduo udwh iru hqwqjohqqw edvhg /(2 vdwhoolwh 4。< / div> 'v \ vwhpv> @ div>> @ lv sursrvhg dqjdo \] Ri D VLQJOH SKRWRQ 7KH VWDWHV RI LQGLEGLGDOOORFDO TXELWV DuH PHDVXUHG XVLQJ D FDVFDGH RI LQWHUIHURPHWULF VODJHV Iroorzhg e \ Wlph Uhvroyhg Skrwq FrXQWLQJ> @ 7KH Phwkrg PD \ eh xvhixo lq lpsohfhqwdwlrrrqv ri hqwdqjohiqw edvhg 4。'surwrfrov zkrvh shuirupdqfh lvlwhg e \ wkh euljkwqhvv ri rqugugog vrxufhv ri qrqfodvvlfdo oljkw oljkw edvhg edvhg edvhg dwlrrq wdnlqj lqwr dffrxqw wkh suhvhfh ri edfnjurxqg qrlvh lqfdwh lqfdwhv wkh srwhqwldo ri pxowltxelw hqfrgfffglqj iru qhduo udwh iru hqwqjohqqw edvhg /(2 vdwhoolwh 4。< / div>'v \ vwhpv> @ div>
7KLV LVVXH KDV DQ DUWLFOH RQ 6WUHQJWK DQG 'XUDELOLW\ 6WXGLHV RQ 6WHHO )LEUH 5HLQIRUFHG 6HOI &RPSDFWLQJ &RQFUHWH 2Q VLPLODU DUWLFOH RQWXWH HG +LJK 6WUHQJWK &RQFUHWH LV DOVR SXEOLVKHG ,Q WKH ILHOG RI FRPPXQLFDWLRQV DQ DUWLFOH RQ $XWRPDWLF $LUFUDIW 7UDFNLQJ ZLWK 57 5XVXVXVXVXVVXVXV) ) H 8OWUD :LGHEDQG $SSOLFDWLRQV D 6HPL FLUFXODU 6ORWWHG 0RQRSROH $QWHQQD LV SURSRVHG DQG DQ DUWLFOH LV SXEOLVKHG UHJDUGLQJ WKH VDPH ,Q DKRQWGWDWHWH DWHWH7' (IILFLHQW $SSURDFK IRU 2SWLPL]DWLRQ RI 1RQOLQHDULW\ 5HVSRQVH LV H[SODLQHG 2Q 5RERWLFV 9LUWXDOO\ 7UDQVFULEHG DQG 5HVWUDLQHG 6GWFWH LVWH LVWH\H $QRWKHU DUWLFOH RQ %UDLQ ,PDJH 5HJLVWUDWLRQ XVLQJ (YROYH &RQWRXUOHW 7UDQVIRUP $Q (IILFLHQW ZD\ WR 5HJLVWHU WKH 0RQRPRGDO 05, ZGXLV KHV KVKHV PHGLFDO DSSOLFDWLRQV 6LPLODUO\ WKHUH DUH VXFK DUWLFOHV LQ GLIIHUHQW EUDQFKHV RI HQJLQHHULQJ +RSH WKHVH DUWLFOHV PDNH DQ LQWHUHVWLQLQJUGHVHUKHVHUKH
The 22$V 2 DQ HPHUJLQU LQ FKLS FRPXQLFDWLFDWLQ WITH RRFDO AND 21R&V FDQ AND THIS AND AND AND AND AND KLJK EDQGGZLGWK ORZ ODWHQF\ ORZ ORZ SRZHU GLVLSDWLRQ IRU WILL +RZVIHU +RZHYHUR WHIHUR RIGHT HIIHFWV HIIHFWV RI具有SKRWRQLF权利。 GHYLFHV KDYH AND JUHDW LPSDFW RQ WKH RSHUDWLQJ SHUIRUPDQFH AND THE 21R&V 21R&V WITH WITH WITH FRQWUH FRQWURO WR DOOHYLDWH LW )XUPHUPRUH WWOD W WHUDWXUH VHQVLWLWYH 21R&V WR EV WITH WITH 7URDUH LQWHJUDWHG FLUFXLWV ,&V IURP WKH PDOLFLRRRXV WITHS SDUW\ FRPSRQWV WRUPDQFH GDPDJHV ,Q WKLV SDSHU ZHU ZH WDPSHULQJ DWDFNV DWLFDO VDPSOLQJ WITH WITH WITH WITH LOF AND THIS AND AND AND AND WRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRSRDWH AND LPSDFWV IRP + VLJQLILFDQWO\ HQKDFH WITH THE WITH THE VHFXUH VHFXULW\ RI WRITE VERY IRU 21R& 21R& WILL NOT 21R2 DYHUDJH ODWHQF\ AND HQG HQHUJ\ FRQVVXXWLQ UHVSHFWLYHO\ Keywords—Sensing, sensing, temporal-on-chip, micro-onrine resonator, Trojan,篡改攻击
摘要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写 SODQDUL]H WKH ZDIHU ZLWK D SRO\PHU FRYHULQJ DOO PLFURSLOODUV QDQRZLUHV 7KLV FRDWLQJ FDQ WKHQ EH VORZO\ DQG FDUHIXOO\ HWFKHG EDFN 写 UHYHDO MXVW WKH WLSV RI WKH PLFURSLOODUV QDQRZLUHV 2QFH WKH WLSV DUH H[SRVHG SW\SH PHWDO FRQWDFWV FDQ EH GHSRVLWHG DV D XQLYHUVDO FRQWDFW RU D GHSRVLW DQG OLIW RII SURFHVV FDQ EH XVHG 写 IDEULFDWH LQGLYLGXDO GHYLFH FRQWDFWV $QRWKHU DSSURDFK LV 写 XVH SKRWROLWKRJUDSK\ 写 SDWWHUQ WKHVH SW\SH FRQWDFWV +RZHYHU WKH DOLJQPHQW WROHUDQFH GHFUHDVHV TXLFNO\ DV GHYLFH IRRWSULQWV VKULQN DQG DQ\ PLVDOLJQPHQW FDQ OHDG 写 GHYLFH IDLOXUHV DQG UHGXFHG \LHOG ,Q WKLV ZRUN ZH SURSRVH D QHZ VROXWLRQ WR WKHVH FKDOOHQJHV DQG GHPRQVWUDWH WKH VXFFHVVIXO IDEULFDWLRQ RI 89 PLFURSLOODU /('V DW QP %\ HPEHGGLQJ WKH GHYLFH ¶V RKPLF FRQWDFW ZLWKLQ WKH GU\ HWFK PDVN WKLV QRYHO VLQJOH VWUXFWXUH FDQ VHUYH WZR SXUSRVHV ±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Û& IRU PLQXWHV LQ DQ R[\JHQ HQYLURQPHQW SULRU WR WHVWLQJ 7KHVH GLIIHUHQW VWUXFWXUHV ZHUH FRPSDUHG WR D QP VLQJOH 1L OD\HU FRQWDFW ZKLFK VHUYHG DV RXU EDVHOLQH 2XU PHDVXUHPHQWV VKRZ WKDW QP 1L QP $X QP 1L DQG QP 1L QP $X QP 1L FRQWDFWV VKRZ WKH ORZHVW FRQWDFW UHVLVWDQFH ±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等 > @ FRQVLVWLQJ RI D QP $O1 EXIIHU OD\HU D —P XQGRSHG *D1 OD\HU D —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