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页数:8页
时间:2019-07-09
《椭圆曲线Tate对的压缩》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据ISSN1000-9825,CODENRUXUEWJournalofSoftware,V01.18,No.7,July2007,PP.1799-1805DOI:10.1360/josl81799@2007byJournalofSoftware.Allrightsreserved.椭圆曲线Tate对的压缩胡磊+木(信息安全国家重点实验室(中国科学院研究生院),北京100049)CompressionofTatePairingsonEllipticCurvesHULei+E—mail:jos@iscas.ac.cahttp://www.jos.o
2、rg.cnTbl,Fax:+86—10—62562563(StateKeyLaboratoryofInformationSecurity(GraduateUniversity,TheChineseAcademyofSciences),Bering100049,China)+Correspondingauthor:Phn:+86—10—88256435,Fax:+86-10-88258713,E-mail:hu@is.ac.caHuL.CompressionofTatepairingsonellipticcurves.JournalofSoftware
3、,2007,18(7):1799—1805.http://wwwjOS.org.cn/1000-9825/18/1799.htmAbstract:Inthispaper,utilizingmapsbetweencyclicgroupscontainedinafinitefield,twoefficientmethodsforcompressingaTatepairingdefinedonasupersingularellipticcurVewithprimecharacteristicPandMOVdegree3arepresented.Theyco
4、mpressapairingvaluefromastringoflengthof6109pbitstoonesof3109pand2109pbits,respectively,andanimplementationforboththecompressedpairingsmakesuseofthecodesfortheoptimizedalgorithmoftheoriginalpairingandnonewcodeisneeded.Boththecompressedpairingsachievethespeedoftheoriginalimpleme
5、ntation.Keywords:Tatepairing;ellipticcurve;compressedTatepairing;algebraictorus;identitybasedcryptosystem摘要:利用有限域包含的循环群之间的映射,给出了特征为素数P,MOV次数为3的超奇异椭圆曲线上的一类Tate对的两种有效压缩方法,它们分别将Tate对的值从6109p比特长的串压缩到3109p和2109p比特长.两种压缩方法的实现均使用原有Tate对的优化算法的代码,不需要针对压缩对编写新的实现代码,而且两种压缩对的实现均保持原有Tate对的实现
6、速度.关键词:Tate对;椭圆曲线;压缩Tate对;代数环面;基于身份的密码系统中图法分类号:TP309文献标识码:A1IntroductionRecently,Tatepairingsoverellipticcurvesbecomeahotspotinthefieldofcryptographicresearch.Tatepairingisanefficientlycomputablebilinearmapassociatedwithellipticcurves,basedonapairingrelated,reasonablypresumedco
7、mputationallyhardproblem,namelythebilinearDiffie-Hellmanproblem,manyidentity·SupportedbytheNationalNaturalScienceFoundationofChinaunderGrantNos.90104034,60373041(国家自然科学基金);theNationalHigh-TechResearchandDevelopmentPlanofChinaunderGrantNo.2002AAl41020(国家高技术研究发展计划(863))Received20
8、04··07··06;Accepted2006·-03—·09万方数据JournalofSoftware软件
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