【英文标准名称】:Informationtechnology-Securitytechniques-Messageauthenticationcodes(MACs)-Mechanismsusingadedicatedhash-function
【原文标准名称】:信息技术.安全性技术.电文鉴别代码(MACS).使用专用散列函数的机构
【标准号】:BSISO/IEC9797-2-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-07-02
【实施或试行日期】:2002-07-02
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:多路存取计算机;数据交换;文电;正文通信;算法;代码;机械;安全;数据处理;信息交换;远程通信;电信;电信;数据传输;数据传送;定义;定义;信息技术;网络互连;通信;校验
【英文主题词】:Algorithms;Authentication;Codes;Dataexchange;Dataprocessing;Datatransfer;Datatransmission;Definition;Definitions;Hash-functions;Informationinterchange;Informationtechnology;MAC;Mechanism;Messages;Networkinterconnection;Safety;Telecommunication;Textcommunication
【摘要】:ThispartofISO/IEC9797specifiesthreeMACalgo-rithmsthatuseasecretkeyandahash-function(oritsround-function)withann-bitresulttocalculateanm-bitMAC.Thesemechanismscanbeusedasdataintegritymechanismstoverifythatdatahasnotbeenalteredinanunauthorisedmanner.Theycanalsobeusedasmessageauthenticationmechanismstoprovideassurancethatamessagehasbeenoriginatedbyanen-tityinpossessionofthesecretkey.Thestrengthofthedataintegritymechanismandmessageauthenticationmechanismisdependentonthelength(inbits)kandsecrecyofthekey,onthelength(inbits)nofahash-codeproducedbythehash-function,onthestrengthofthehash-function,onthelength(inbits)moftheMAC,andonthespecificmechanism.ThethreemechanismsspecifiedinthispartofISO/IEC9797arebasedonthededicatedhash-functionsspecifiedinISO/IEC10118-3.Thefirstmech-anismspecifiedinthispartofISO/IEC9797iscom-monlyknownasMDx-MAC.Itcallsthecompletehash-functiononce,butitmakesasmallmodificationtotheround-functionbyaddingakeytotheadditiveconstantsintheround-function.ThesecondmechanismspecifiedinthispartofISO/IEC9797iscommonlyknownasHMAC.Itcallsthecompletehash-functiontwice.ThethirdmechanismspecifiedinthispartofISO/IEC9797isavariantofMDx-MACthattakesasinputonlyshortstrings(atmost256bits).Itoffersahigherperformanceforapplicationsthatworkwithshortinputstringsonly.ThispartofISO/IEC9797canbeappliedtothese-curityservicesofanysecurityarchitecture,process,orapplication.
【中国标准分类号】:L80
【国际标准分类号】:35_040
【页数】:24P.;A4
【正文语种】:英语


【英文标准名称】:Roundpunchesforballfixation;quickchangepunch
【原文标准名称】:球固定的圆冲头.快速更换冲头
【标准号】:DIN9843-1983
【标准状态】:作废
【国别】:德国
【发布日期】:1983-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:工具;材料;切削工具;尺寸;冲床;压力设备
【英文主题词】:cuttingtools;punches;tools;dimensions;presstools;materials
【摘要】:
【中国标准分类号】:J62
【国际标准分类号】:4530
【页数】:2P;A4
【正文语种】:德语