Improvement and Implementation of KeeLoq Algorithm

随着电子门控设备的普及,通过手机实现门锁智能化控制开始逐渐兴起,但是提升其通信安全性仍是值得研究的问题。本文通过详析kEElOQ加解密算法基本原理,归纳当前的主要攻击方法,指出其安全性上的不足。借鉴3dES算法,提出了三重kEElOQ算法,加大破解难度,进一步改善其安全性能。并结合蓝牙通信及AndrOId应用程序设计方法,将该算法成功地应用于智能门控系统中,将多种门锁钥匙软件化,实现低成本、高安全性、人性化及绿色环保智能门控系统的设计。As the popularity of electronic-controlled locks,the intelligent lock contorlled by cellphones begins to spring.However,it deserves to further study and improve its communication security.According to the detailed rationale of KeeLoq codec algorithm and the induction of previous attack researches,the security lack of KeeLoq codec algorithm was indicated.Taking example by 3DES algorithm,the triple KeeLoq codec algorithm was proposed to increase the crack difficulties,which its security was better improved.Associated with the bluetooth communication technology and the design method of Android applications,the triple KeeLoq codec algorithm was implemented in the design of intelligent locks.Due to multifarious software-based keys,the intelligent lock owns overwhelmed advantages of lowcost,high security,humanity and green environmental protection.厦门科技项目(3502Z20133019;3502Z20143020); 福建省教育厅科技项目(JA12200;JA11157); 集美大学潘金龙学科建设基金(C512038

Effect of Refractive Index of Substrate on Fabrication and Optical Properties of Hybrid Au-Ag Triangular Nanoparticle Arrays

以石英和不同型号的玻片为基底,系统研究了基底折射率对周期性金银复合纳米阵列的制备及其光学性能的影响。采用离散偶极子近似(ddA)数值方法研究了复合阵列的局部表面等离子共振(lSPr)光谱特性,计算结果表明,当基底折射率为1.43和1.68时,纳米阵列的折射率灵敏度(rIS)和品质因子(fOM)比较优异。利用纳米球刻蚀法(nSl)制备了二维周期性复合纳米点阵结构,实验结果表明,当基底折射率为1.43和1.68时,基底与贵金属纳米颗粒有较好的粘合度,纳米阵列结构形貌比较规则清晰。Based on the substrate of silica and different types of slides, the effect of refractive index of substrate on fabrication and optical properties of hybrid Au- Ag triangular periodic nanoparticle arrays is systematically investigated.The optical spectrum of localized surface plasmon resonance(LSPR) simulated by discrete dipole approximation(DDA) numerical method shows that the nanoparticle arrays can obtain better refractive index sensitivity(RIS) and figure of merit(FOM), when refractive index of substrate is 1.43 and 1.68, respectively.The nanosphere lithography(NSL) is used to fabricate the periodic nanostructure arrays.The experimental results demonstrate that when refractive index of substrate is 1.43 and 1.68, nanoparticles and substrate have better adhesive ability.Meanwhile, the nanoparticles both form a large-scale monolayer array with the hexagonally close-packed structure.国家自然科学基金(11074207); 厦门科技项目(3502Z20143020;2012S0484); 福建省教育厅科技项目(JA11157;12200); 集美大学潘金龙基金(C512038

2D NMR Study on Solution Structure of Natural Product 3′-Methoxy Puerarin

【中文文摘】3′ 甲氧基葛根素是从常用中药野生葛根中分离提取出来的一种具有很强生物活性的异黄酮类化合物.该化合物含季碳较多,有些13CNMR的谱峰不易归属.本文利用包括氢检测异核多量子相干谱(HMQC)和氢检测远程异核多量子相干谱(HMBC)等多种二维核磁共振技术对该天然产物的13C和1HNMR谱峰进行了全归属.这些工作有助于利用二维核磁共振技术研究和确定含季碳较多的异黄酮类新化合物的结构和利用扩散相关的核磁共振新技术研究葛根的生理活性成份与靶分子相互作用. 【英文文摘】An active isoflavone compound 3′methoxy puerarin was isolated from puerarin lobate (willd). Several twodimensional NMR new techniques, including 1Hdetected heteronuclear multiplequantum coherence and 1Hdetected multiplebond heteronuclear multiplequantum coherence, were employed to completely assign all the protons and carbons of the compound. This work solves the assignments of uncertain C3 and C1′ NMR signals in the previous literature and will be helpful to study the structures of this kind of new isoflavone compounds by 2D NMR spectroscopy and bioactive compounds in puerarin lobate directly by diffusion2chemical shift 2D NMR.国家自然科学基金(20172042);; 国家中医药管理局与福建省卫生厅基金(2000 J P 40)资助项

Cytological Observation on Cross Fertilization of Halilotis discus hannai and Halilotisgigantea with Fluorescent Microscope

本研究采用荧光显微技术对皱纹盘鲍（Halilotis discus hannai）♀×西氏鲍（H.gigantea）♂的受精过程及受精卵的早期发育进行了观察,并采用FITC-anti-α-tubulin对精子入卵位置进行标记.结果显示西氏鲍的精子可正常激活皱纹盘鲍的卵子,精子进入卵子2-5 min后受精卵开始第一次卵裂,释放出第一极体.随着受精卵的发育卵子完成第二次减数分裂,排出第二极体,同时形成早期精卵原核.精卵原核膨胀并彼此融合,受精卵开始进行有丝分裂完成第一次卵裂.通过FITC标记的anti-α-tubulin蛋白免疫荧光观察,发现精子在入卵时会在卵膜表面,形成一个类似于受精孔的结构.The current study was conducted on the fertilization process and the early development of fertilized eggs by the fluorescence microscopy technique. The position of sperm into the eggs was labeled by FITC - anti - α - tubulin. The results showed that sperm of H. gigantea penetrated H. discus hannai eggs. The first cleavage and the first polar body were released in after 2 -5min of sperm - egg fusion. With the completion of the second meiotic division of the fertilized egg, the second polar body was released, forming the early male and female pronucleus. Then two pronucleus began to swell and started mutual fusion, and the fertilized eggs began to undergo mitosis to complete the first cleavage. The immunofluorescent observation with the FITC labeled anti - α - tubulin probe detected a pore structure similar to micropylar on the surface of egg membrane.海南省高等学校科学研究项目（HNKY2016-43