class百度云100as
百度云100as 时间:2021-01-04 阅读:()
100100100GenuineUsersImposterswithoutstolenTokensImposterswithstolenTokensOriginalThresholdClearSeparation(ZeroEER)RelativeMatchCountDissimilarityScoresbetweenBiometricTemplatesCancelableBiometricSystemFig.
13.
Thestolen-tokenscenarioforcancelablebiometrics.
atenrollmentandauthentication,bydenition,two-factorauthenticationisyieldedwhichmayincreasethesecuritybutdoesnoteffecttheaccuracyofbiometricauthentication.
Asignicantincreaseofrecognitionratescanbecausedbyunpracticalassumptionsduringperformanceevaluations.
Ifuser-specictransformsareappliedtoachieveCBthesetrans-formshavetobeconsideredcompromisedduringinter-classcomparisons.
Otherwisebiometricsbecomesmeaninglessasthesystemcouldrelyonsecrettokensparameterswithoutanyrisk[102].
Secrettokens,beittransformparameters,randomnumbersoranykindofpasswordsareeasilycompromisedandmustnotbeconsideredsecure[1].
Thus,performanceevaluationsofapproachestoCBhavetobeperformedundertheso-called"stolen-tokenscenario"whereeachimpostorisinpossessionofvalidsecrettokens(thesameappliestoBCSsincasesecrettokensareapplied).
Fig.
13illustrateshowinter-classdistancesmaychangewithorwithoutconsideringthestolen-tokenscenario.
Ifdifferenttokensareappliedforeachsubjectaclearseparationofintra-classandinter-classdistributionsisachievedbyadoptinganewthreshold.
Incontrast,ifsecrettokensareconsideredcompromisedaccuracy2)RevocableBiotokens:Boultetal.
[149],[150]proposedcryptographicallysecurebiotokenswhichtheyappliedtofaceandngerprints.
Inordertoenhancesecurityinbiometricsystems,biotokens,whichtheyrefertoasBiotopeTM,areadoptedtoexistingrecognitionschemes(e.
g.
PCAforface).
Operationmode(seeFig.
15):eachmeasuredbiometricfeaturevistransformedviascalingandtranslationresultinginv=(vt)·s.
Thekeyideaistosplitvintoastablepartgtermedintegerandanunstablepartr.
Forfacebiometricstheauthorssuggesttosimplysplitrealfeaturevaluesintoanintegerpartandafractionalpart(e.
g.
15.
4issplittedinto15and0.
4).
Sincegisconsideredstable,anda"perfectmatching"isclaimedtobefeasibleatauthentication,comparisonscanbeperformedintheencrypteddomain.
Aone-waytransformofg,denotedbywisstoredasrstpartofthesecurebiometrictemplate.
Assecondpartofthetemplatetheunencodedrwhichhasbeenobscuredviathetransform,aswellassandtarestored.
Atauthenticationfeaturesaretransformedapplyingsandtontoaresidualregiondenedbyr.
Thentheunencryptedrisusedtocomputethelocaldistancewithina"window",whichisreferredtoasrobustdistancemeasure,toprovideaperfectmatchofw.
However,sinceaperfectmatchisrequiredonlyforanumber
13.
Thestolen-tokenscenarioforcancelablebiometrics.
atenrollmentandauthentication,bydenition,two-factorauthenticationisyieldedwhichmayincreasethesecuritybutdoesnoteffecttheaccuracyofbiometricauthentication.
Asignicantincreaseofrecognitionratescanbecausedbyunpracticalassumptionsduringperformanceevaluations.
Ifuser-specictransformsareappliedtoachieveCBthesetrans-formshavetobeconsideredcompromisedduringinter-classcomparisons.
Otherwisebiometricsbecomesmeaninglessasthesystemcouldrelyonsecrettokensparameterswithoutanyrisk[102].
Secrettokens,beittransformparameters,randomnumbersoranykindofpasswordsareeasilycompromisedandmustnotbeconsideredsecure[1].
Thus,performanceevaluationsofapproachestoCBhavetobeperformedundertheso-called"stolen-tokenscenario"whereeachimpostorisinpossessionofvalidsecrettokens(thesameappliestoBCSsincasesecrettokensareapplied).
Fig.
13illustrateshowinter-classdistancesmaychangewithorwithoutconsideringthestolen-tokenscenario.
Ifdifferenttokensareappliedforeachsubjectaclearseparationofintra-classandinter-classdistributionsisachievedbyadoptinganewthreshold.
Incontrast,ifsecrettokensareconsideredcompromisedaccuracy2)RevocableBiotokens:Boultetal.
[149],[150]proposedcryptographicallysecurebiotokenswhichtheyappliedtofaceandngerprints.
Inordertoenhancesecurityinbiometricsystems,biotokens,whichtheyrefertoasBiotopeTM,areadoptedtoexistingrecognitionschemes(e.
g.
PCAforface).
Operationmode(seeFig.
15):eachmeasuredbiometricfeaturevistransformedviascalingandtranslationresultinginv=(vt)·s.
Thekeyideaistosplitvintoastablepartgtermedintegerandanunstablepartr.
Forfacebiometricstheauthorssuggesttosimplysplitrealfeaturevaluesintoanintegerpartandafractionalpart(e.
g.
15.
4issplittedinto15and0.
4).
Sincegisconsideredstable,anda"perfectmatching"isclaimedtobefeasibleatauthentication,comparisonscanbeperformedintheencrypteddomain.
Aone-waytransformofg,denotedbywisstoredasrstpartofthesecurebiometrictemplate.
Assecondpartofthetemplatetheunencodedrwhichhasbeenobscuredviathetransform,aswellassandtarestored.
Atauthenticationfeaturesaretransformedapplyingsandtontoaresidualregiondenedbyr.
Thentheunencryptedrisusedtocomputethelocaldistancewithina"window",whichisreferredtoasrobustdistancemeasure,toprovideaperfectmatchofw.
However,sinceaperfectmatchisrequiredonlyforanumber
- class百度云100as相关文档
- 节流百度云100as
- 标线百度云100as
- Supply百度云100as
- mode百度云100as
- 规格百度云100as
- reports百度云100as
gcorelabs：美国GPU服务器，8张RTX2080Ti，2*Silver-4214/256G内存/1T SSD/
gcorelabs提供美国阿什本数据中心的GPU服务器（显卡服务器），默认给8路RTX2080Ti，服务器网卡支持2*10Gbps（ANX），CPU为双路Silver-4214（24核48线程），256G内存，1Gbps独享带宽仅需150欧元、10bps带宽仅需600欧元，不限流量随便跑吧。 官方网站 ：https://gcorelabs.com/hosting/dedicated/gpu/ ...
friendhosting：（优惠55%）大促销，全场VPS降价55%，9个机房，不限流量
每年的7月的最后一个周五是全球性质的“系统管理员日”，据说是为了感谢系统管理员的辛苦工作....friendhosting决定从现在开始一直到9月8日对其全球9个数据中心的VPS进行4.5折（优惠55%）大促销。所有VPS基于KVM虚拟，给100M带宽，不限制流量，允许自定义上传ISO...官方网站：https://friendhosting.net比特币、信用卡、PayPal、支付宝、微信、we...
SunthyCloud阿里云国际版分销商注册教程，即可PayPal信用卡分销商服务器
阿里云国际版注册认证教程-免绑卡-免实名买服务器安全、便宜、可靠、良心，支持人民币充值，提供代理折扣简介SunthyCloud成立于2015年，是阿里云国际版正规战略级渠道商，也是阿里云国际版最大的分销商，专业为全球企业客户提供阿里云国际版开户注册、认证、充值等服务，通过SunthyCloud开通阿里云国际版只需要一个邮箱，不需要PayPal信用卡就可以帮你开通、充值、新购、续费阿里云国际版，服务...
百度云100as为你推荐
-
美国vps服务器美国Vps 哪里的稳定，服务好，不是代购，主要是我新手，不太懂免费云主机有永久免费的云主机吗？vps主机vps主机好吗？是不是垃圾？海外域名怎样注册国外域名？北京网站空间网站空间哪里的好，免备案虚拟主机请问哪里好一点的免备案的虚拟主机?1g虚拟主机网站空间1G是多少M,网站空间用1G虚拟主机够吗。价格多少,数据库和网站有什么关系深圳虚拟主机深圳鼎峰网络科技 虚拟主机空间怎么样shopex虚拟主机我有一个PHP1G的虚拟主机，请问做什么站比较合适？备案域名网站备案分为哪几种?域名备案跟网站备案有什么不同?