简介：
简介：Anovelbroadcastencryptionschemeforgroupcommunicationscenariosindistributednetworksispresented.Inthescheme,anyoneisallowedtoencryptamessageanddistributeittoadesignatedgroup.Eachmemberinthedesignatedgrouphastheabilitytoindependentlydecryptaciphertext.Incontrasttotraditionalbroadcastencryption,allthevalidreceiversintheproposedschemecomposethedesignatedgroup.Totakeadvantageofthisproperty,atabforthegroupissetandthematchingprivatekeyforeachmemberisgenerated.Inaddition,beforedecryptingaciphertext,anyoneintheschemecanverifytheciphertext,toensurethattheciphertextiscorrect.Thispropertyisveryimportantforlarge-scalegroupcommunication,asthegatewaycanfilterincorrectciphertextandalleviatethereceiver'sworkload.Finally,aproofintherandomoraclemodelisgiven,toshowthattheproposedschemeissecureagainsttheadaptivelychosenciphertextattack.
简介：IntroductionAsoneJewishhistorianwhofollowsclassicaltraditioninhishistoricalcomposition,Josephus’lifewascolorfulandlegendary.1BornasaJewishpriest2andlaterappointedasaseniorgeneralduringthejewishrevoltin68AD,josephussurrenderedtoRomeinGalileeafteranunsuccessfulresistanceanddestineddefeat,afterwhichhewassetfreebyVespasian,wenttosettledowninRome
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