BS ISO/IEC 18033-4-2005 信息技术.安全技术.加密算法.序列密码
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【英文标准名称】:Informationtechnology-Securitytechniques-Encryptionalgorithms-Streamciphers
【原文标准名称】:信息技术.安全技术.加密算法.序列密码
【标准号】:BSISO/IEC18033-4-2005
【标准状态】:作废
【国别】:英国
【发布日期】:2005-12-05
【实施或试行日期】:2005-12-05
【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】:算法;密码;编码;数据处理;数据安全;定义;加密;信息处理;信息技术;特性;安全;应用
【英文主题词】:Algorithms;Ciphers;Coding;Dataprocessing;Datasecurity;Definition;Definitions;Encryption;Informationprocessing;Informationtechnology;Properties;Safety;Use
【摘要】:ThispartofISO/IEC18033specifiesstreamcipheralgorithms.Astreamcipherisanencryptionmechanismthatusesakeystreamtoencryptaplaintextinbitwiseorblock-wisemanner.Therearetwotypesofstreamcipher:asynchronousstreamcipher,inwhichthekeystreamisonlygeneratedfromthesecretkey(andaninitializationvector)andaself-synchronizingstreamcipher,inwhichthekeystreamisgeneratedfromthesecretkeyandsomepastciphertexts(andaninitializationvector).TypicallytheencryptionoperationistheadditivebitwiseXORoperationbetweenakeystreamandthemessage.ThispartofISO/IEC18033describesbothpseudorandomnumbergeneratorsforproducingkeystream,andoutputfunctionsforstreamciphers.ThealgorithmsspecifiedinthispartofISO/IEC18033havebeenassignedobjectidentifiersinaccordancewithISO/IEC9834.ThelistofassignedobjectidentifiersisgiveninAnnexC.Anychangetothespecificationofthealgorithmsresultinginachangeoffunctionalbehaviourwillresultinachangeoftheobjectidentifierassignedtothealgorithm.NOTE1-Inapplicationswhereacombinationofalgorithmsisbeingused,orwhenanalgorithmisparameterizedbythechoiceofacombinationofotheralgorithms,thecombinationmaybespecifiedasasequenceofobjectidentifiers.Alternatively,theobjectidentifiersoflowerlayeralgorithmsmaybeincludedintheparameterfieldofthehigherlayeralgorithm'sidentifierstructure.Forexample,theobjectidentifierofablockciphercouldbeincludedasaparameterinthealgorithmidentifierstructureforakeystreamgenerator.ThealgorithmidentifierstructureisdefinedinISO/IEC9594-8.NOTE2-Theencodingofobjectidentifiersisapplicationdependent.
【中国标准分类号】:L80
【国际标准分类号】:35_040
【页数】:52P.;A4
【正文语种】:英语
【原文标准名称】:信息技术.安全技术.加密算法.序列密码
【标准号】:BSISO/IEC18033-4-2005
【标准状态】:作废
【国别】:英国
【发布日期】:2005-12-05
【实施或试行日期】:2005-12-05
【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】:算法;密码;编码;数据处理;数据安全;定义;加密;信息处理;信息技术;特性;安全;应用
【英文主题词】:Algorithms;Ciphers;Coding;Dataprocessing;Datasecurity;Definition;Definitions;Encryption;Informationprocessing;Informationtechnology;Properties;Safety;Use
【摘要】:ThispartofISO/IEC18033specifiesstreamcipheralgorithms.Astreamcipherisanencryptionmechanismthatusesakeystreamtoencryptaplaintextinbitwiseorblock-wisemanner.Therearetwotypesofstreamcipher:asynchronousstreamcipher,inwhichthekeystreamisonlygeneratedfromthesecretkey(andaninitializationvector)andaself-synchronizingstreamcipher,inwhichthekeystreamisgeneratedfromthesecretkeyandsomepastciphertexts(andaninitializationvector).TypicallytheencryptionoperationistheadditivebitwiseXORoperationbetweenakeystreamandthemessage.ThispartofISO/IEC18033describesbothpseudorandomnumbergeneratorsforproducingkeystream,andoutputfunctionsforstreamciphers.ThealgorithmsspecifiedinthispartofISO/IEC18033havebeenassignedobjectidentifiersinaccordancewithISO/IEC9834.ThelistofassignedobjectidentifiersisgiveninAnnexC.Anychangetothespecificationofthealgorithmsresultinginachangeoffunctionalbehaviourwillresultinachangeoftheobjectidentifierassignedtothealgorithm.NOTE1-Inapplicationswhereacombinationofalgorithmsisbeingused,orwhenanalgorithmisparameterizedbythechoiceofacombinationofotheralgorithms,thecombinationmaybespecifiedasasequenceofobjectidentifiers.Alternatively,theobjectidentifiersoflowerlayeralgorithmsmaybeincludedintheparameterfieldofthehigherlayeralgorithm'sidentifierstructure.Forexample,theobjectidentifierofablockciphercouldbeincludedasaparameterinthealgorithmidentifierstructureforakeystreamgenerator.ThealgorithmidentifierstructureisdefinedinISO/IEC9594-8.NOTE2-Theencodingofobjectidentifiersisapplicationdependent.
【中国标准分类号】:L80
【国际标准分类号】:35_040
【页数】:52P.;A4
【正文语种】:英语
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