查询词典 database key

An Advanced Cryptographically Generated Addresses method is proposed.It uses two sets of cryptographically keys to produce IPv6 address.One set cryptographically key is public key and private key of ISP.And the private key is used in assigning ACGA address,the public key is used in validating whether the address come from the ISP that it claimed.

提出一种改进的密码生成地址方法，ACGA涉及到两组公钥和私钥对，一组是ISP的公钥和私钥对，其中私钥在分配ACGA地址中使用，公钥在验证该地址是否存在或是否来自声称的ISP中使用。

The design includes many new technologies in data exchange and data security, they are: Converting non-XML data to XML in order to apply the XML security technology to more data types; Using the technology of XKMS and PKI to manage the public key in order to overcome the shortage of complexity and difficulty in using PKI and improve the efficiency of the public key management; Using Diffe-Hellman algorithm combining with the public key technology to exchange secret key in order to furthest increase the security of the key; Using the technology of XML digital signature algorithm to ensure the integrity, message authentication and signer authentication of the data; Using the technology of XML encryption to ensure confidentiality of the data; Defining delegable access rules on the structure and content of the XML documents to provide fine-grained access control. According to the XML security framework, a XML security library is designed and implemented.

在对XML及其安全技术主要包括XML加密技术、XML数字签名、公钥管理、密钥产生和交换进行研究的基础上，结合传统密码技术和XML安全技术提出了一种基于XML的数据安全模型，模型中包含了目前网络数据交换和安全领域的一系列最新技术，主要有：将非XML格式数据转换为XML格式数据的方法，以保证现有的大部分网络数据能够应用XML安全技术；使用XML公钥管理技术结合PKI技术管理公钥，以克服PKI技术实施和部署复杂、难度大等问题，提高公钥管理的效率；使用Diffie-Hellman算法结合公钥技术交换密钥，以最大限度保证密钥的安全；使用XML数字签名技术保证数据的完整性、不可否认性和发送方身份认证；使用XML加密技术保证数据的机密性；根据XML文档的内容和结构定义授权访问规则进行良好的访问控制。

In this context, we propose a time deployment based, pairwise keymanagement scheme called TDBK. In TDBK, the network lifetime is divided intoseveral consecutive network deployment statuses which are separated by nodedeployment events. Each node to be deployed is assigned its key informationthrough a special two-tier key predistribution mechanism, and timely deletes theuseless part of the key information through the key elimination mechanism eachtime the pairwise key establishment is finished in terms of a new nodedeployment event.

在此背景下，我们提出了一种基于时间部署的对****管理方案(Time Deployment Based Keying，TDBK)，该方案将网络的生命周期分为多个连续的网络部署状态，相邻的部署状态之间通过节点部署事件分隔，每个节点通过特殊的两级****预分配机制来获得用于建立对****的****信息，随后通过****清除机制在每次节点部署事件发生时进行的对****建立过程完成后及时地删除其中无用的****信息。

Make signal be called binary system numeral to make for the make of binary system signal, the binary system make and is divided into a binary system to move key to control(2 ASK), the binary system Pin move key to control(2 FSK), the binary system mutually move key to control(2 PSK) with bad cent the binary system mutually move key to control(2 DPSK) etc. variety basic type, this topic main is numeral the frequency make and call Pin to move key to control.

调制信号为二进制信号的调制称为二进制数字调制，二进制调制又分为二进制幅移键控（2ASK）、二进制频移键控（2FSK）、二进制相移键控（2PSK）和差分二进制相移键控（2DPSK）等多种基本的类型，本课题主要是数字频率调制又称频移键控。

According to password which establishes, uses two pressed keys realizations password the input function, after the password input is correct, locks opens, if inputs three passwords are not correct, locking presses a key 3 seconds, simultaneously discovered reports to the police the sound, after has not pressed a key presses down 3 kinds, only then opens the pressed key locking function; Otherwise still had the pressed key in 3 seconds to press down, relocked presses a key 3 seconds time and reports to the police

根据设定好的密码，采用二个按键实现密码的输入功能，当密码输入正确之后，锁就打开，如果输入的三次的密码不正确，就锁定按键3秒钟，同时发现报警声，直到没有按键按下3种后，才打开按键锁定功能；否则在3秒钟内仍有按键按下，就重新锁定按键3秒时间并报警

Third chapter illustrate the design scheme for justification development system, amalgamation steer the argumentum;And code design in the detailed design sum the database design of whole system;Recommended the detailed design information of sum of the shuttering cake structure of the aetioporphyrin system;Analyzed the library to manage the system's appliance demand, according to the database design theory proptosis of one-step and one-step earth joint system demand manual, local ER general view, overall situation ER general view, system relation modal, leaven the modal;Arrangement in parallel proptosis the valve key source of the said system code in the procedure the amalgamation commit the interpretation, justification.

第三章说明开发系统的设计方案，并进行论证；以及详细设计中的代码设计和整个系统的数据库设计；介绍了本系统的模块结构和详细的设计信息；分析了图书馆管理系统的应用需求，按照数据库设计理论一步一步地给出了系统需求说明书、局部ER图、全局ER图、系统关系模式，子模式；并列出了该系统的关键源程序中的代码并做解释、说明。

This paper expounds the necessity of construction of teaching reference book database in academic libraries, and probes into some key problems in process of the construction, such as collection of the booklist, database construction criterions, data maintenance and update, copyright protection etc.

摘要本文阐述高校图书馆建立电子教参书资源库的必要性，探讨在建设电子教参书资源库过程中必须注意的若干问题，包括：教参书书目采集问题、建库标准和规范问题、数据维护与更新问题及版权问题等。

Query of distributed database is to provide an interface between user and database, which is key technique in this field.

分布式查询处理是用户和分布式数据库的接口，是分布式数据库系统的主要问题之一。

Gained knowledge is the key in risk source recognition database.This paper expound the way to gain knowledge and how to realize it in risk sources recognition database,and try to make it have better extensity and reasonableness.

在危险源辨识结果库中，知识的获取是重点和难点，文中着重论述了危险源辨识结果库知识的获取方法与实现，力图使该系统的知识库具有较好的扩展性和合理性。

Beginning with the requirement of currently OA, we expound the Official Document Circulation the technique development of the system with the project -- that the need development, morrow will adopt to system operate system, database the choice of the system and development tool, proceeds argument, further detailed description total need of system is with key technique towards each function mold piece rule for proceeding for of analysis designing, lay emphasising Dispatch mold piece, Furl mold piece , then in a specific way relating the database designing and this system at design realize inside use and calculate way, finally talked the oneselfed at this a development process realizing of inside and insight.

本文以当前对自动化办公的需求开局，阐述了公文流转的概念以及公文流转系统的技术动态和需求动态，提出了系统开发的目标，紧接着对系统将要采用的方案--操作系统、数据库系统及开发工具的选择，进行了论证，进一步详细叙述了系统总体需求和对各个功能模块的分析设计，侧重的进行了发文模块、收文模块概述，然后具体讲述了数据库设计的规则以及本系统在设计实现中所用到的关键技术与算法，最后谈了自己在这一开发过程中的体会与心得。公文流转，发文，收文， C/S 模式

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。