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security

網絡安全技術及其協議，包括了網絡通信安全、信息在網絡傳輸中的保密性和完整性、控制訪問受限網域與敏感信息以及在公共網絡如因特網上使用隱秘通訊。為了解決這些問題，各大組織及技術供應商紛紛推出了各種網絡和信息安全技術。

維吉尼亞（Vigenere）密碼為了提高密碼的破譯的難度

維吉尼亞（Vigenere）密碼為了提高密碼的破譯的難度，人們有發明一種多表置換的密碼，即一個明文字母可以表示為多個密文字母，多表密碼加密算法結果將使得對單表置換用的簡單頻率分析方法失效，其中維吉尼亞密碼就是一種典型的加密方法。維吉尼亞密碼是使用一個詞組（語句）作為密鑰，詞組中每一個字母都作為移位替換密碼密鑰確定一個替換表，維吉尼亞密碼循環的使用每一個替換表完成明文字母到密文字母的變換，最后所得到的密文字母序列即為加密得到的密文，具體過程如下：設密鑰，明文，加密變換其中例如，M＝data security，k＝best。可以先將M分解為長為4的序列data secu rity 每一節利用密鑰k＝best加密得密文c=Ek(M)=EELT TIUN SMLR。當密鑰k取的詞組很長時，截獲者就很難將密文破解。（我們還在計算機上就維吉尼亞密碼設計的方法，編寫了一個小的程序，可以運用其進行加密和相應的解密。見附錄）由于我們知識和條件所限，本學期對以上6種古典加密方法進行了學習和研究，從中我們收獲頗多，我們了解古典密碼學的基本原理和方法，并能夠對信息進行簡單的加密和解密，大大提高我們的學習文化知識的興趣和熱情，如果有條件我們在今后將進一步研究密碼學。

標簽： Vigenere 密碼

上傳時間： 2015-03-24

上傳用戶：songnanhua
一、安裝SQL數據庫 1、打開Microsoft SQL Server 企業管理器 2、建立一個新的數據庫

一、安裝SQL數據庫 1、打開Microsoft SQL Server 企業管理器 2、建立一個新的數據庫，名稱為 XfokSite_Free (必須為這個名字) 3、選擇該數據庫，點擊鼠標右鍵 -> 所有任務 -> 還原數據庫 -> 從設備 -> 選擇設備 -> 添加 -> 選擇程序目錄下的數據庫里面的文件二、安裝程序 1、如果程序沒有放在虛擬目錄下，請把所有文件放在網站根目錄下，否則會提示出錯。三、設置 1、用文本編輯器打開web.config 2、找到<add key="SqlConnectionString" value="Data Source=(local) Integrated security=false Initial Catalog=XfokSite_Free User ID=xfok Password=xfok" /> 紅色部分：數據庫服務器地址，如果為本地地址，請設置為(local)，外部請直接修改為IP地址（不要加括號）深紅部分：數據庫名稱粉紅部分：SQL數據庫登陸用戶名藍色部分：SQL數據庫登陸密碼四、設置完畢！直接在瀏覽器中敲入地址，來體驗一下心隨我動，網站建設超輕松的快感吧！

標簽： SQL Microsoft Server 數據庫

上傳時間： 2015-04-15

上傳用戶：璇珠官人
Software Testing, Second Edition provides practical insight into the world of software testing and q

Software Testing, Second Edition provides practical insight into the world of software testing and quality assurance. Learn how to find problems in any computer program, how to plan an effective test approach and how to tell when software is ready for release. Updated from the previous edition in 2000 to include a chapter that specifically deals with testing software for security bugs, the processes and techniques used throughout the book are timeless. This book is an excellent investment if you want to better understand what your Software Test team does or you want to write better software.

標簽： practical Software provides software

上傳時間： 2015-04-30

上傳用戶：bjgaofei
JBoss, one of the leading java Open Source groups, integrates and develops these services for a full

JBoss, one of the leading java Open Source groups, integrates and develops these services for a full J2EE-based implementation. JBoss provides JBossServer, the basic EJB container, and Java Manage Preface 18 Great Events of the Twentieth Centuryment Extension (JMX) infrastructure. It also provides JBossMQ, for JMS messaging, JBossTX, for JTA/JTS transactions, JBossCMP for CMP persistence, JBossSX for JAAS based security, and JBossCX for JCA connectivity. Support for web components, such as servlets and JSP pages, is providedby an abstract integration layer. Implementations of the integration service are provided for third party servlet engines like Tomcat and Jetty. JBoss enables you to mix and match these components through JMX by replacing any component you want with a JMX compliant implementation for the same APIs.

標簽： integrates develops services leading

上傳時間： 2014-11-03

上傳用戶：wsf950131
幾本java p2p 安全的電子書

幾本java p2p 安全的電子書，A Survey of Peer-to-Peer security Issues.pdf

標簽： java p2p 電子書

上傳時間： 2014-12-06

上傳用戶：aig85
java的加密樣例代碼

java的加密樣例代碼， import java.math.BigInteger import java.security.KeyPair import java.security.cert.* import java.util.*

標簽： java 加密代碼

上傳時間： 2015-06-10

上傳用戶：大融融rr
WebServices_WebSphere_Version_5 Objectives § Web Services Overview • What are Web Services?

WebServices_WebSphere_Version_5 Objectives § Web Services Overview • What are Web Services? • Roles and Functions of Web Services § Web Services Runtime • Base Support • IBM WebSphere UDDI Registry (Private UDDI) • Web Services Gateway (WSGW) § Problem Determination § Web Services security § Technical Previews § Summary

標簽： Services WebServices_WebSphere_Version Objectives Web

上傳時間： 2015-06-15

上傳用戶：cx111111
This book offers 226 code recipes applicable to a variety of difficulties that may arise in the proc

This book offers 226 code recipes applicable to a variety of difficulties that may arise in the process of application development. Topics covered include XML processing, Windows forms, database access, networking, runtime security, cryptography and more.

標簽： difficulties applicable recipes variety

上傳時間： 2015-07-21

上傳用戶：朗朗乾坤
本源碼為OpenNETCF源代碼

本源碼為OpenNETCF源代碼，包含了Diagnostics,IO,Multimedia,Runtime,security,Threading,Win32等各種用于windows mobile開發的擴展類源代碼，對于移動開發者是個好東西。

標簽： OpenNETCF 源碼源代碼

上傳時間： 2015-08-22

上傳用戶：zhaiyanzhong
This project attempts to implement a Database using B+Tree. The project has developed a DATABASE SYS

This project attempts to implement a Database using B+Tree. The project has developed a DATABASE SYSTEM with lesser memory consumption. Its API includes simple SQL Statements and the output is displayed on the screen. Certain applications for which several features of existing databases like concurrency control, transaction management, security features are not enabled. B+Trees can be used as an index for factor access to the data. Help facility is provided to know the syntax of SQL Statements.

標簽： project implement developed Database

上傳時間： 2013-12-25

上傳用戶：semi1981