RSA算法是第一个能同时用于加密和数字签名的算法，也易于理解和操作。RSA是被研究得最广泛的公钥算法，从提出到现在已近二十年，经历了各种攻击的考验，逐渐为人们接受，普遍认为是目前最优秀的公钥方案之一。RSA的安全性依赖于大数的因子分解，但并没有从理论上证明破译RSA的难度与大数分解难度等价。即RSA的重大缺陷是无法从理论上把握它的保密性能如何，而且密码学界多数人士倾向于因子分解不是NPC问题。 RSA的缺点主要有：A)产生密钥很麻烦，受到素数产生技术的限制，因而难以做到一次一密。B)分组长度太大，为保证安全性，n 至少也要 600 bits 以上，使运算代价很高，尤其是速度较慢，较对称密码算法慢几个数量级；且随着大数分解技术的发展，这个长度还在增加，不利于数据格式的标准化。目前，SET( secure Electronic Transaction )协议中要求CA采用比特长的密钥，其他实体使用比特的密钥
上传时间： 2014-10-13
上传用户：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
标签： Aspect-Oriented Developement streamline Software
上传时间： 2013-12-01
上传用户：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
标签： BlackBerry computing enhance mobile
上传时间： 2016-12-07
上传用户：GavinNeko
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.
标签： OpenPGP implementation SharpPrivacy developed
上传时间： 2017-01-13
上传用户：dreamboy36
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.
标签： server-supported Description developers Microsoft
上传时间： 2017-02-07
上传用户：refent
Java technology is both a programming language and a platform. The Java programming language originated as part of a research project to develop advanced software for a wide variety of network devices and embedded systems. The goal was to develop a small, reliable, portable, distributed, real-time operating platform. When the project started, C++ was the language of choice. But over time the difficulties encountered with C++ grew to the point where the problems could best be addressed by creating an entirely new language platform. Design and architecture decisions drew from a variety of languages such as Eiffel, SmallTalk, Objective C, and Cedar/Mesa. The result is a language platform that has proven ideal for developing secure, distributed, network-based end-user applications in environments ranging from network-embedded devices to the World-Wide Web and the desktop
标签： programming language Java technology
上传时间： 2014-01-03
上传用户：huangld
S60V2版短信漏洞补丁ortiCleanUp_CurseSMS_103这条不到10个字符短信成功利用了SymbianOS的漏洞，使用者收到这条短信后，就再也无法打开短信收件箱功能，并可能频繁死机。由于这条短信谁都能发，所以诺基亚所有N系列智能手机、E系列智能手机都将遭遇有史以来最严重的安全威胁。目前还没有发布相关的补丁。如果你尚未中招，建议安装诺基亚和F-secure推出的保护程序，直到诺基亚推出新固件为止
标签： ortiCleanUp_CurseSMS SymbianOS S60V2 103
上传时间： 2017-03-15
上传用户：qunquan
secureCRT 是高度可定制的终端仿真器，适用于 Internet 和 Intranet，支持 IPv6 标准。对于连接到运行 Windows、UNIX 和 VMS 的 远程系统来说，secureCRT 是理想的选择。 主要特性： . 广泛的终端仿真： VT100，VT102，VT220，ANSI，SCO ANSI，Xterm，Wyse 50/60， 和 Linux console 仿真（带有 ANSI 颜色）。 . 优秀的会话管理特性： 新的带标签的用户界面和 Activator 托盘工具，最小化桌面的杂乱。 会话设置可以保存在命名的会话中。 . 协议支持： 支持 SSH1，SSH2，Telnet，RLogin，Serial，和 TAPI 协议。 . secure Shell： secure Shell 加密登录和会话数据，包括以下支持： - 端口转发使 TCP/IP 数据更安全 - 口令，公钥，键盘交互和 Kerberos 验证 - AES，Twofish，Blowfish，3DES，RC4，和 DES 加密 - X11 转发 . 文件传输工具： VCP 和 VSFTP 命令行公用程序让使用 SFTP 的文件传输更安全。 . 脚本支持： 支持 VBScript 和 JScript 脚本语言。
上传时间： 2013-12-19
上传用户：kikye
Spread-spectrum techniques are methods by which electromagnetic energy generated in a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth. These techniques are used for a variety of reasons, including the establishment of secure communications, increasing resistance to natural interference and jamming, and to prevent detec
标签： Spread-spectrum electromagnetic techniques particular
上传时间： 2017-06-05
上传用户：royzhangsz
This application note describes the design and implementation of a usb mass storage devic using a secure digital card,which should prove useful to developers of usb mass storage solution.This application may be used as a stand-alone MSD or as a secure Digital/Multimedia Card (SD/MMC) reader/ writer interface.
标签： implementation application describes storage
上传时间： 2017-06-24
上传用户：weiwolkt
