xl2tpd is an implementation of the Layer 2 Tunnelling Protocol (RFC 2661). L2TP allows you to tunnel PPP over UDP. Some ISPs use L2TP to tunnel user sessions from dial-in servers (modem banks, ADSL DSLAMs) to back-end PPP servers. Another important application is Virtual Private Networks where the IPsec protocol is used to secure the L2TP connection (L2TP/IPsec, RFC 3193). The L2TP/IPsec protocol is mainly used by Windows and Mac OS X clients. On Linux, xl2tpd can be used in combination with IPsec implementations such as Openswan.
標簽： implementation Tunnelling Protocol xl2tpd
上傳時間： 2014-01-20
上傳用戶：Altman
Host Identity Protocol on Linux is an implemetation of the Host Identity Protocol (HIP) and the related architecture. HIP is a proposal to change the TCP/IP stack to securely support mobility and multi-homing. Additionally, it provides for enhanced security and privacy and advanced network concepts, such as moving networks and mobile ad hoc networks. HIP is "cool", which means that as a mobile VPN solution, when your network interfaces go up or down, there is no need to re-establish a secure tunnel.
標簽： Identity Protocol Host implemetation
上傳時間： 2016-09-01
上傳用戶：皇族傳媒
從鍵盤讀入一個四位的十六進制數，CRT顯示等值的二進制數. 由于每個十六進制數位對應4個二進制，所以每讀入一個十六進制位后，即可將其對應的4個二進制位依次輸出。由于數字‘０’~ ‘９’的ASCⅡ碼為30H～39H,字母‘a’～‘f’與 ‘A’～‘F’的ASCⅡ碼為61H～66H 與41H～46H ，因此，如果輸入的字母為數字‘０’～‘９’，則其低４位即為對應的二進制位；如果輸入的字符為字母‘ａ’～‘ｆ’或‘Ａ’～‘Ｆ’，則需要減７，然后通過移位將低４位依次輸出。
上傳時間： 2014-01-24
上傳用戶：yzhl1988
RSA算法是第一個能同時用于加密和數字簽名的算法，也易于理解和操作。RSA是被研究得最廣泛的公鑰算法，從提出到現在已近二十年，經歷了各種攻擊的考驗，逐漸為人們接受，普遍認為是目前最優秀的公鑰方案之一。RSA的安全性依賴于大數的因子分解，但并沒有從理論上證明破譯RSA的難度與大數分解難度等價。即RSA的重大缺陷是無法從理論上把握它的保密性能如何，而且密碼學界多數人士傾向于因子分解不是NPC問題。 RSA的缺點主要有：A)產生密鑰很麻煩，受到素數產生技術的限制，因而難以做到一次一密。B)分組長度太大，為保證安全性，n 至少也要 600 bits 以上，使運算代價很高，尤其是速度較慢，較對稱密碼算法慢幾個數量級；且隨著大數分解技術的發展，這個長度還在增加，不利于數據格式的標準化。目前，SET( Secure Electronic Transaction )協議中要求CA采用比特長的密鑰，其他實體使用比特的密鑰
上傳時間： 2014-10-13
上傳用戶：sz_hjbf
Aspect-Oriented Software Developement Coverage includes Using AOSD to streamline complex systems development without sacrificing flexibility or scalability How AOSD builds on the object-oriented paradigmand how it s different State-of-the-art best practices for the AOSD development process Languages and foundations: separating concerns, filter technologies, improving modularity, integrating new features, and more Using key AOSD tools, including AspectJ, Hyper/J, JMangler, and Java Aspect Components Engineering aspect-oriented systems: UML, concern modeling and elaboration, dependency management, and aspect composition Developing more secure applications with AOSD techniques Applying aspect-oriented programming to database systems Building dynamic aspect-oriented infrastructure
標簽： Aspect-Oriented Developement streamline Software
上傳時間： 2013-12-01
上傳用戶：jennyzai
BlackBerry Hacks will enhance your mobile computing with great tips and tricks. You ll learn that the BlackBerry is capable of things you never thought possible, and you ll learn how to make it an even better email and web workhorse: Get the most out of the built-in applications Take control of email with filters, searches, and more Rev up your mobile gaming--whether you re an arcade addict or poker pro Browse the web, chat over IM, and keep up with news and weblogs Work with office documents, spell check your messages, and send faxes Become more secure, lock down your BlackBerry and stash secure information somewhere safe Manage and monitor the BlackBerry Enterprise Server (BES) and Mobile Data System (MDS) Create web sites that look great on a BlackBerry Develop and deploy BlackBerry applications
標簽： BlackBerry computing enhance mobile
上傳時間： 2016-12-07
上傳用戶：GavinNeko
1、用RS－232C的零MODEM的連接法連好兩機的連線； 2、用DEBUG的O命令將一數發送到串行口(2F8H/3F8H)，然后在另一臺機上用 I命令讀入串行口的內容。如果發送的的內容與接受的內容一直，說明兩機已經連好線，否則必須檢查連線，直到兩機可通訊為止； 3、編一程序，將一臺機的鍵盤輸入的鍵值通過RS-232C口送到另一臺機，并在CRT上顯示鍵值； 4、編一程序，通過RS-232C口進行一臺機到另一臺機的文件復制。
上傳時間： 2017-01-10
上傳用戶：stvnash
SharpPrivacy has been developed to be an Open Source implementation of the OpenPGP standard. OpenPGP is a standard for encrypting, decrypting, signing and verifying data cryptographically. The OpenPGP protocoll is commonly used and is said to be very secure.
標簽： OpenPGP implementation SharpPrivacy developed
上傳時間： 2017-01-13
上傳用戶：dreamboy36
1. 設計要求： 1．彩色界面，界面清晰美觀，色彩協調。 2．使用DOS系統的0AH號子功能接受用戶鍵入的字符串。 3．建議按下圖設計用戶界面，顏色自選。 注：雙線框由若干CRT顯示符組成，相應的CRT顯示符（十進制數）已經標注在右圖中。1. 設計要求： 1． 轉化內容選擇下列一項：二進制數→十六進制數顯示，二進制數→十進制數顯示，十進制數→二進制數顯示，十進制數→十六進制數顯示，十六進制數→二進制數顯示。 2． 給出適當的文字提示 3． 程序要求保護措施，對于非法鍵入不受理，但回顯，顯示錯誤信息。 4．具體顯示格式，例如：0111100010011010=789AH1. 設計要求： 1.統計并且顯示負數的個數。 2.找出真值最大的數，并以十六進制的形式，顯示在屏幕上，顯示格式為：MAX= H 3.數據自己在數據段進行定義，個數至少為8個。1. 設計要求： 1.動態畫一個實心圓球 2.位置在屏幕中央，變化情況是：逐漸“膨脹”的或者逐漸“收縮”的。
標簽： 彩色
上傳時間： 2014-01-08
上傳用戶：Divine
Description: Microsoft?Windows?HTTP Services (WinHTTP) provides developers with a server-supported, high-level interface to the HTTP/1.1 Internet protocol. WinHTTP is designed to be used primarily in server-based scenarios by server applications that communicate with HTTP servers. WinHTTP is also designed for use in system services and HTTP-based client applications. WinHTTP is more secure and robust than WinInet. However, single-user applications that need FTP or gopher functionality, cookie persistence, caching, automatic credential dialog handling, Internet Explorer compatibility, or downlevel platform support should still consider using WinInet.
標簽： server-supported Description developers Microsoft
上傳時間： 2017-02-07
上傳用戶：refent
