简介：Thisletterpresentsak-partyRSAkeysharingschemeandtherelatedalgorithmsarepresented.ItisshownthatthesharedkeycanbegeneratedinsuchacollaborativewaythattheRSAmodulusispubliclyknownbutnoneofthepartiesisabletodecrypttheencipheredmessageindividually.

简介：ThisstudyconcernssecurityissuesoftheemergingWirelessBodySensorNetwork(WBSN)formedbybiomedicalsensorswornonorimplantedinthehumanbodyformobilehealthcareappli-cations.Anovelauthenticatedsymmetric-keyestablishmentschemeisproposedforWBSN,whichfullyexploitsthephysiologicalfeaturesobtainedbynetworkentitiesviathebodychannelavailableinWBSNbutnototherwirelessnetworks.Theself-definedIntrinsicSharedSecret(ISS)isusedtoreplacethepre-deploymentofsecretsamongnetworkentities,whichthuseliminatescentralizedservicesorau-thoritiesessentialinexistingprotocols,andresolvesthekeytransportprobleminthepuresymmet-ric-keycryptosystemforWBSNaswell.Thesecuritypropertiesoftheproposedschemearedemon-stratedintermsofitsattackcomplexityandthetypesofattacksitcanresist.Besides,theschemecanbeimplementedunderalight-weightwayinWBSNsystems.DuetotheimportanceoftheISSconcept,theanalysisonusingfalseacceptance/falserejectionmethodtoevaluatetheperformanceofISSforitsusageintheschemeisalsodemonstrated.

简介：Recently,ithasbeenseenthattheensembleclassifierisaneffectivewaytoenhancethepredictionperformance.However,itusuallysuffersfromtheproblemofhowtoconstructanappropriateclassifierbasedonasetofcomplexdata,forexample,thedatawithmanydimensionsorhierarchicalattributes.Thisstudyproposesamethodtoconstructeanensembleclassifierbasedonthekeyattributes.Inadditiontoitshigh-performanceonprecisionsharedbycommonensembleclassifiers,thecalculationresultsarehighlyintelligibleandthuseasyforunderstanding.Furthermore,theexperimentalresultsbasedontherealdatacollectedfromChinaMobileshowthatthekey-attributes-basedensembleclassifierhasthegoodperformanceonbothoftheclassifierconstructionandthecustomerchurnprediction.

简介：Histogramofcollineargradient-enhancedcoding(HCGEC),arobustkeypointdescriptorformulti-spectralimagematching,isproposed.TheHCGECmainlyencodesroughstructureswithinanimageandsuppressesdetailedtexturalinformation,whichisdesirableinmulti-spectralimagematching.Experimentsontwomulti-spectraldatasetsdemonstratethattheproposeddescriptorcanyieldsignificantlybetterresultsthansomestate-ofthe-artdescriptors.

简介：在信任计算的一个重要函数是保护的存储，它能保护数据和钥匙的无限的数量。在存在为信任站台的信任站台模块(TPM)钥匙装载计划，有是的TPM的一个计算平台它的信任的锚，装载操作的全部的时间与装载目标目标的祖先的数字一样，导致装载有许多祖先的一把TPM钥匙的低效率。改进效率，装载计划的一把基于身份的TPM钥匙被建议。在这个计划，装载操作的时间当任何TPM钥匙被装进TPM时，仅仅是二。因此，要求的时间花费了因为装载一个TPM关键罐头被减少，特别为复杂TPM关键存储层次。由分析正确性，安全，效率和可行性，建议计划有更好理论并且应用程序价值。

简介：Timeefficiencyofkeyestablishmentandupdateisoneofthemajorproblemscontributorykeymanagementsstrivetoaddress.Toachievebettertimeefficiencyinkeyestablishment,weproposeaLocation-basedHuffman(L-Huffman)scheme.First,usersareseparatedintoseveralsmallgroupstominimizecommunicationcostwhentheyaredistributedoverlargenetworks.Second,bothuser'scomputationdifferenceandmessagetransmissiondelayaretakenintoconsiderationwhenHuffmancodingisemployedtoformingtheoptimalkeytree.Third,thecombinedweightsinHuffmantreearelocatedinahigherplaceofthekeytreetoreducethevarianceoftheaveragekeygenerationtimeandminimizethelongestkeygenerationtime.SimulationsdemonstratethatL-HuffmanhasmuchbetterperformanceinwideareanetworksandisalittlebetterinlocalareanetworkthanHuffmanscheme.

简介：Thisarticleisfocusedonanalyzingthekeytechnologiesofnewmaliciouscodeandcorrespondingdefensivemeasuresinthelarge-scalecommunicationnetworks.Basedondescriptionoftheconceptsanddevelopmentofthemaliciouscode,thearticleintroducestheanti-analysistechnology,splittingandinsertingtechnology,hidingtechnology,polymorphvirustechnology,andautoproductiontechnologyofthemaliciouscodetrendswithintelligence,diversityandintegration.Followingthat,itsummarizesthesecurityvulnerabilitiesofcommunicationnetworksfromfourrelatedlayersaspects,accordingtothemechanismsofmaliciouscodeinthecommunicationnetworks.Finally,itproposesrapidresponsedispositionofmaliciouscodeattacksfromfourcorrelatedsteps:buildingupthenetworknodemonitoringsystem,suspiciouscodefeatureautomationanalysisandextraction,rapidactivemaliciouscoderesponsetechniqueforunknownmaliciouscode,andmaliciouscodeattackimmunitytechnique.Asaresult,itactivelydefensesagainsttheunknownmaliciouscodeattacksandenhancesthesecurityperformanceofcommunicationnetworks.

简介：Certificatelessencryptionattractsalotofattentionsofarbyeliminatingthekeyescrowprobleminidentity-basedencryptionandpublickeycertificatesinthetraditionalpublickeycryptography.Byconsideringthethreatfromthekeyexposure,itisdesirabletoincorporatetheideaofkey-insulatedcryptosystemintothecertificatelessencryption.Inthispaper,wehavedesignedanefficientcertificatelesskeyinsulatedencryption(CL-KIE)schemetoachievethisgoal.Byourapproach,thecomputationalperformanceofourschemehasbeenimprovedsignificantlyintermsofreductiononrunningtimeandstorage.WealsogavethesecurityproofofthenewCL-KIEschemeagainstthechosenplaintextattacks(CPAs)intherandomoracle,consideringtheassumptionofthecomputationalDiffie-Hellman(CDH)problem.

简介：Nowadays,thepassword-basedremoteuserauthenticationmechanismusingsmartcardisoneofthesimplestandconvenientauthenticationwaystoensuresecurecommunicationsoverthepublicnetworkenvironments.Recently,Liuetal.proposedanefficientandsecuresmartcardbasedpasswordauthenticationscheme.However,wefindthatLiuetal.’sschemeisvulnerabletotheoff-linepasswordguessingattackanduserimpersonationattack.Furthermore,italsocannotprovideuseranonymity.Inthispaper,wecryptanalyzeLiuetal.’sschemeandproposeasecurityenhanceduserauthenticationschemetoovercometheaforementionedproblems.Especially,inordertopreservetheuseranonymityandpreventtheguessingattack,weusethedynamicidentitytechnique.Theanalysisshowsthattheproposedschemeismoresecureandefficientthanotherrelatedauthenticationschemes.

简介：Withouttheassumptionthattheprivatekeysarekeptsecureperfectly,cryptographicprimitivescannotbedeployedintheinsecureenvironmentswherethekeyleakageisinevitable.Inordertoreducethedamagecausedbythekeyexposureintheidentity-based(ID-based)signaturescenariosefficiently,weproposeanID-basedkey-insulatedsignatureschemeinthispaper,whicheliminatestheexpensivebilinearpairingoperations.Comparedwiththepreviouswork,ourschememinimizesthecomputationcostwithoutanyextracost.Underthediscretelogarithm(DL)assumption,asecurityproofofourschemeintherandomoraclemodelhasalsobeengiven.

简介：Intheair-waterquantumkeydistribution（QKD）,theirregularseasurfacehassomeinfluenceonthephotonpolariza-tionstate.Thewindisconsideredasthemainfactorcausingtheirregularity,sothemodelofirregularseasurfacebasedonthewindspeedisadopted.Therelationshipsofthequantumbiterrorratewiththewindspeedandtheinitialincidentanglearesimulated.Therefore,themaximumsecuretransmissiondepthofQKDisconfirmed,andthelimita-tionofthewindspeedandtheinitialincidentangleisdetermined.Thesimulationresultsshowthatwhenthewindspeedandtheinitialincidentangleincrease,theperformanceofQKDwillfalldown.Undertheintercept-resendattackcondition,themaximumsafetransmissiondepthofQKDisupto105m.Torealizesafecommunicationsinthesafedivingdepthofsubmarines（100m）,theinitialincidentangleisrequestedtobenotexceeding26~,andwiththeinitialincidentan~leincreased,thelimitationofwindspeedisdecreased.

简介：

简介：Withparametricdown-conversionsources(PDCSs),thenonorthogonaldecoystateprotocolbasedononevacuumandtwoweakdecoystatesispresented.ThedetectioneventsonBob'ssidearedividedintotwogroupsdependingonwhetherAlicegetsatriggerornot:triggeredcomponentsandnontriggeredcomponents.Thetriggeredcomponentsareusedtoestimatethefractionsanderrorratesofsingle-photonandtwo-photonpulses,andthenthefinalsecurekeyrateisdeduced.Besides,bothtriggeredandnontriggeredcomponentsareusedtodeduceamoreaccuratevalueofthekeygenerationrate.Thesimulationofthefinalkeygenerationrateovertransmissiondistanceshowsthatthefirstmethodcanobtainakeygenerationrateclosetothetheoreticallimitoftheinfinitedecoystateprotocol,whilethesecondmethodisbetter.

简介：为了在无线传感器网络(WSN)完成安全通讯，在有有限计算能力的传感器节点随机在敌对领土上被散布的地方，各种各样的关键分发前策划(KPS)被建议了。在这份报纸，新KPS在有限的地上基于symplectic几何学被建议。在一个symplectic空格的固定维的subspace代表一个节点，所有1-dimensionalsubspaces表示钥匙和每个节点分享了钥匙。但是这天真的印射不保证一个好网络得到跳回。因此，它被建议二个节点不得不计算一把pairwise钥匙的提高的KPS，仅当他们分享至少q普通钥匙。这条途径对节点俘获攻击提高跳回。与解决方案的存在相比，结果证明那条新途径更加提高网络可伸缩性，并且完成好连接和好全面性能。

简介：一个光标签的标签扑灭比率和分散赔偿正在交换传播系统优化，它采用40-Gb/s回来到调音的零微分阶段移动(RZ-DPSK)用622-Mb/s振幅移动调音标记的收费载重(问)控制数据。在我们的计划，收费载重和标签的接收装置敏感分别地完成-27.8dBm和-33.5dBm。在在40km上播送了以后，60km和80km挑选模式纤维(SMF)(与分散赔偿)分别地，收费载重能没有力量惩罚被恢复，当标签能与不到2dB惩罚被恢复时。

简介：摘要随着我国经济的快速发展和生活水平的不断提高，人们对于建筑工程的质量要求也越来越高，建筑给排水工程作为建筑建设过程中的重要基础性工程，对于建筑的整体性能有着非常重要的影响。因此，建筑给排水设计的合理性和功能的完整性受到了人们的广泛关注。本研究便是从这个角度出发，对构建环保体系下的建筑给排水工程的必要性进行了简要的介绍，并重点探讨了影响建筑给排水与环境保护的因素以及环境保护体系之下给排水设计的理念。

简介：将水膜除尘器供水方式由外水环管改为内供喷嘴形式,避免了水膜除尘器进水口缝隙堵塞的问题。提高了污水的重复利用率,达到节约用水的目的。

简介：摘要本文涉及给排水的技术领域，特别是涉及一种冶金用供排水处理装置，其通过对外界多组设备供应不同压力的水，使一套供水系统能够满足多组设备不同水压的需求，节省人力、资金和时间的投入，使给排水装置维护更加方便快捷，提高生产力，提高实用性和可靠性。

简介：摘要工会组织是施工企业重要的组织机构构成。因为施工企业的特殊性导致其工会工作面临一定的难点。本文在研究中以中铁十九局集团三公司的工会工作实践为依据，提出了增强施工企业工会组织凝聚力、影响力的对策建议，希望为提升新时期施工企业工会组织工作品质提供启迪借鉴。

简介：摘要：伴随着我国城市建设的持续发展，市政给排水工程的数量越来越多，规模也越来越大，工程建设的难度也越来越大，在这个过程中，出现了较多新的材料和新的技术手段，从而提高了工程造价控制的难度。所以，对市政给排水工程造价控制及管理措施展开分析，具有十分重要的意义。