无线局域网管理功能安全性改进的设计与实现

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1、万方数据jE京交道盘堂亟±童些堂僮迨塞△旦曼!＆△￡!ABSTRACTABSTRACT：WLAN棚_ewidelyusedinvariousapplicationsbecauseofitshi。ghrate，tlighmobility．AsWLANtransmitsintheairopenly,ithasexposedmanysecurityproblems，suchaseavesdropping，interceptionormodifytransmissiondata,denialofservi

2、ce．Inthecurrentwirelessequipmentmarket，managementactivitiesareimplementedbyinteractingclearflameunprotected，suchasjoininginandofnineofwirelessterminal，spectrummanagementetc．ThemaliciousattackerCancounterfeitlegalclientorwirelessaccesspointtojoininorof

3、flineWLANSOthatthelegalclientcallnotcommunicateproperly．Intheaspectofkeymanagement,mostofwirelessequipmentstakedynamicnegotiationandreal—timeupdatesofkeymanagementtoenhancetheWLANsecurity．AlgorithmsofkeymanagementofcurrentwirelessequipmentexistsriskSO

4、thatattackerCanuseofit．Soitshouldstrengthenitssecurityinthekeymanagement．InordertoenhanceWLANsecurityofmanagementfunctions，someresearchesateprocessedtoenhancethesecurityoftheWLANmanagementdevicesbasedonH3Ccomwareso觚aresystemandwirelesscontrollers，wire

5、lessaccesspointhardwareinthispaper．Mainjobasfollows：Firstly,inordertoavoidletingoutkeyduringkeynegotiationprocess，accordingtothe802．1lWorkingGroup’Sproposal，addingthekeyderivationfunctionwhosecoreisSHA256onAC．Inordertoensurecompatibility,addingconfigu

6、rationmanagementcommandsonAC—side．TheadministratorCanselectekeyderivationalgorithmviathecommandline．DesignandimplementationthekeyderivationfunctionduringjoiningprocessandselectekeyderivationalgorithmbaSedonnegotiationtogeneratekey．Inordertoenhancethes

7、ecurityofkeynegotiationprocess，takinganewhashfunctionforkeynegotiationprocesstoprotecttheintegrityoftheframe．Secondly,fordefectsoftransferringmanagementflameexpressly,designandimplementationofbroadcastmanagementframeprotectionprograms．Takingkey—basedh

8、ashmechanismforbroadcastmanagementflametopreventfTRmebeingtamperedduringtransmission．Appendsequencenumberforbroadcastmanagementframeagainstreplayattackbymaliciousattackers．Forcompatibilitywitholderequipmentaswell，designconfigurationswitchcomma