共查询到20条相似文献，搜索用时 140 毫秒
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龙文光 《内江师范学院学报》2013,28(6):17-20
为了能有效保证射频识别(RFID)系统中用户的隐私和数据安全,运用分布式RFID询问应答认证协议,Elgamal密码系统、认证机制和可验证门限秘密共享等协议对标签数据认证查询.该策略不仅查询可靠,还具有保护被查询对象和查询结果隐私安全等特点.通过其安全性能分析和效率分析,说明了本协议具有高效的性能和良好的安全性、可靠性. 相似文献
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随着物联网的发展,RFID系统大量应用,未经认证的阅读器非法读取或更改RFID电子标签内的数据,造成越来越严重的安全问题及隐私泄露。通过对射频识别（RFID）重要性及安全隐患的讨论,提出了一种称为认证处理框架Authentication processing framework（APF）的方法,将RFID电子标签和阅读器在APF中进行ID及解密密钥注册,并通过标签及阅读器的双向认证,以避免非法阅读器访问电子标签造成的隐私泄露及安全隐患。 相似文献
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张剑锋 《赤峰学院学报(自然科学版)》2015,(1)
RFID射频识别是一项非接触式的自动识别技术,在无线传感网络中处于核心地位,它通过射频信号自动识别目标对象并获取相关数据,可快速自动识别高速运动物体并同时识别多个标签,识别工作无须人工干预.但RFID在获得广泛应用的同时,也面临着信息安全和隐私保护方面的问题和考验.本文主要针对射频识别系统的风险、安全需求、可能遭受的攻击类型、安全机制和策略等几个方面展开讨论和研究,旨在从技术层面分析和解决射频识别系统的隐私和安全问题,减少因隐私和安全问题给射频识别系统带来的影响. 相似文献
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张智 《安顺师范高等专科学校学报》2013,15(4):124-126
文章介绍了物联网中隐私信息的特点及分类,分别从RFID系统隐私信息保护、信息加密机制设计和法律保护机制三个方面论述了物联网隐私信息的保护. 相似文献
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在已有的基于Hash函数的RFID认证协议的基础上,提出了一种基于Hash函数的RFID认证协议改进方案。该认证协议改进方案对RFID移动支付系统安全性进行了加强,与原有方案相比,能有效抵抗窃听、重放攻击、假冒等各种威胁,可以作为基于NFC技术的RFID移动支付系统的阅读器和电子标签进行双向认证协议。在改进认证协议的基础上,设计了一种RFID移动支付系统隐私保护模型。通过该模型,RFID移动支付系统面临的安全问题得到了很好的解决。 相似文献
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范敏 《绵阳师范高等专科学校学报》2014,(8):89-94
在基于RFID技术的商业活动中,一项非常重要的任务是保护供应链上各个企业的商业秘密不因RFID标签所有权的转换而带来风险.基于Hash函数和对称密码体制,提出了一种适合于供应链环境的轻量级RFID标签所有权转换协议.协议具有抗重放攻击、抗异步攻击、抗假冒攻击、抗内部攻击等特性,并能确保前向、后向隐私安全性.与现有典型的RFID标签所有权转移协议相比,协议的安全性、隐私性好,效率高,能保护企业的商业秘密,具有很好的现实意义. 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
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Rajesh Kanoi 《海外英语》2007,(1):52
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer. 相似文献