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Security

網(wǎng)絡(luò)安全技術(shù)及其協(xié)議，包括了網(wǎng)絡(luò)通信安全、信息在網(wǎng)絡(luò)傳輸中的保密性和完整性、控制訪問(wèn)受限網(wǎng)域與敏感信息以及在公共網(wǎng)絡(luò)如因特網(wǎng)上使用隱秘通訊。為了解決這些問(wèn)題，各大組織及技術(shù)供應(yīng)商紛紛推出了各種網(wǎng)絡(luò)和信息安全技術(shù)。

基于MC33993的多路開(kāi)關(guān)檢測(cè)接口電路設(shè)計(jì)

主要介紹了以PIC18F2480單片機(jī)為處理器，基于可編程多路開(kāi)關(guān)檢測(cè)接口器件MC33993實(shí)現(xiàn)的車(chē)用多路開(kāi)關(guān)檢測(cè)接口電路的設(shè)計(jì)。該設(shè)計(jì)克服了以往基于分立元件的檢測(cè)接口電路的弊端，簡(jiǎn)化了接口電路設(shè)計(jì)，保證了車(chē)用開(kāi)關(guān)工作的可靠性和安全性。 Abstract: The design of automotive multiple switch detection interface circuit based on MC33993 is introduced mainly which adopts PIC18F2480 single chip microprocessor.This circuit overcomes shortage of traditional design which contains many schism elements, and the application of MC33993 also predigests the whole design of interface circuit and guarantees the dependability and Security of the switch.

標(biāo)簽： 33993 MC 多路開(kāi)關(guān) 檢測(cè)

上傳時(shí)間： 2013-11-19

上傳用戶：star_in_rain
基于雙ATmega128的安檢力學(xué)試驗(yàn)機(jī)設(shè)計(jì)

針對(duì)當(dāng)前安檢力學(xué)試驗(yàn)機(jī)所能完成的試驗(yàn)種類(lèi)單一、自動(dòng)化程度低等問(wèn)題，提出一種以ATmega128單片機(jī)為核心控制器的安檢力學(xué)試驗(yàn)機(jī)的設(shè)計(jì)。詳細(xì)闡述了該安檢力學(xué)試驗(yàn)機(jī)各個(gè)組成部分的設(shè)計(jì)原理和方案，并且給出了各部分的軟件設(shè)計(jì)思想和操作流程。經(jīng)過(guò)大量測(cè)試試驗(yàn)表明：設(shè)計(jì)的安檢力學(xué)試驗(yàn)機(jī)可以完成多達(dá)十余種的力學(xué)安檢試驗(yàn)，完全符合相關(guān)國(guó)家標(biāo)準(zhǔn)，并且具有數(shù)據(jù)采集精度高、傳輸速度快、操作安全簡(jiǎn)便等特點(diǎn)，實(shí)現(xiàn)了安檢設(shè)備的多功能化、數(shù)字化和自動(dòng)化。 Abstract: Currently， many mechanical Security testing machines have only one function. The degree of automation of them is low. To solve those problems， a new kind of mechanical Security testing machine， using ATmega128 micro-controller as its core controller， has been advanced. It describes the components of the machine. The principles and the scheme in the designing processes are presented in detail， and the software architecture and the operation processes of each part are given. After having done many testing， we have reached the following conclusions: the mechanical Security testing machine presented can do over ten mechanical Security tests complying with related national standards. It has high data acquisition accuracy and high transmission speed. The operation of the machine is simple and safe. In general， this machine is a multi-functional， highly automatic， digitalized Security testing device.

標(biāo)簽： ATmega 128 安檢試驗(yàn)機(jī)

上傳時(shí)間： 2013-11-05

上傳用戶：a67818601
基于PIC單片機(jī)的低功耗讀卡器硬件設(shè)計(jì)

基于PIC單片機(jī)的低功耗讀卡器硬件設(shè)計(jì):本文提出了一個(gè)完整的基于串口的智能讀卡器子系統(tǒng)設(shè)計(jì)方案并將其實(shí)現(xiàn)。讀卡器的設(shè)計(jì)突出了小型化的要求，全部器件使用貼片封裝。為了減小讀卡器的體積，設(shè)計(jì)中還使用了串口竊電的技術(shù)，使用串口信號(hào)線直接給讀卡器供電。為此，讀卡器使用了省電的設(shè)計(jì)，采用了省電的集成電路，并大膽簡(jiǎn)化了許多傳統(tǒng)的設(shè)計(jì)電路。關(guān)鍵字：讀卡器，單片機(jī)，串口竊電 Abstract： This paper aims to put forward a complete design of Smart IC card reader based onSerial Port and propose the way of realizing it for the purpose of Network Security. SMD isadopted to make Smart IC reader smaller in this design. To reduce the volume of Smart ICreader， Serial Port powered technology is employed to get power from the signal line of Serial Port. For this reason， low-power consumption components are adopted in the design and some traditional designs are simplified to reduce the power consumption.Keywords： Card Reader； Single-chip Computer； Serial Port Powered IC 卡系統(tǒng)保存了加密算法所需要的工作密鑰，供加密算法對(duì)網(wǎng)絡(luò)上傳輸?shù)臄?shù)據(jù)加密使用，是整個(gè)系統(tǒng)網(wǎng)絡(luò)安全的核心。在IC 卡子系統(tǒng)中，讀卡器是一個(gè)重要的部分。它起著管理IC卡、在IC 卡和PC或網(wǎng)絡(luò)計(jì)算機(jī)間傳遞數(shù)據(jù)的重要作用。本文以一片PIC單片機(jī)為核心完成了基于RS232 串口的讀卡器的硬件設(shè)計(jì)。

標(biāo)簽： PIC 單片機(jī) 低功耗讀卡器

上傳時(shí)間： 2014-04-14

上傳用戶：wanghui2438
87C576微控制器的在線編程

The 87C576 includes two separate methods of programming theEPROM array, the traditional modified Quick-Pulse method, and anew On-Board Programming technique (OBP).Quick Pulse programming is a method using a number of devicepins in parallel (see Figure 1) and is the traditional way in which87C51 family members have been programmed. The Quick-Pulsemethod supports the following programming functions:– program USER EPROM– verify USER EPROM– program KEY EPROM– program Security bits– verify Security bits– read signature bytesThe Quick-Pulse method is quite easily suited to standardprogramming equipment as evidenced by the numerous vendors of87C51 compatible programmers on the market today. Onedisadvantage is that this method is not well suited to programming inthe embedded application because of the large number of signallines that must be isolated from the application. In addition, parallelsignals from a programmer would need to be cabled to theapplication’s circuit board, or the application circuit board wouldneed to have logic built-in to perform the programming functions.These requirements have generally made in-circuit programmingusing the modified Quick Pulse method impractical in almost all87C51 family applications.

標(biāo)簽： 87C576 微控制器編程

上傳時(shí)間： 2013-10-21

上傳用戶：xiaozhiqban
基于DSP的ATV-ATT中控系統(tǒng)設(shè)計(jì)

設(shè)計(jì)一種應(yīng)用于某全地形ATV車(chē)載武器裝置中的中控系統(tǒng)，該系統(tǒng)設(shè)計(jì)是以TMS320F2812型DSP為核心，采用模塊化設(shè)計(jì)思想，對(duì)其硬件部分進(jìn)行系統(tǒng)設(shè)計(jì)，能夠完成對(duì)武器裝置高低、回轉(zhuǎn)方向的運(yùn)動(dòng)控制，實(shí)現(xiàn)靜止或行進(jìn)狀態(tài)中對(duì)目標(biāo)物的測(cè)距，自動(dòng)瞄準(zhǔn)以及按既定發(fā)射模式發(fā)射彈丸和各項(xiàng)安全性能檢測(cè)等功能。通過(guò)編制相應(yīng)的軟件，對(duì)其進(jìn)行系統(tǒng)調(diào)試，驗(yàn)證了該設(shè)計(jì)運(yùn)行穩(wěn)定。 Abstract: A central control system applied to an ATV vehicle weapons is designed. The system design is based on TMS320F2812 DSP as the core， uses modular design for its hardware parts. The central control system can complete the motion control of the level of weapons and equipment， rotation direction， to achieve a state of static or moving objects on the target ranging， auto-targeting and according to the established target and the projectile and the launch of the Security performance testing and other functions. Through the development of appropriate software and to carry out system testing to verify the stability of this design and operation.

標(biāo)簽： ATV-ATT DSP 中控系統(tǒng)

上傳時(shí)間： 2013-11-02

上傳用戶：jshailingzzh
工業(yè)系統(tǒng)安全問(wèn)題和解決辦法

Abstract: As industrial control systems (ICSs) have become increasingly connected and use more off-the-shelfcomponents, new vulnerabilities to cyber attacks have emerged. This tutorial looks at three types of ICSs:programmable logic controllers (PLCs), supervisory control and data acquisition (SCADA) systems, anddistributed control systems (DCSs), and then discusses Security issues and remedies. This document alsoexplains the benefits and limitations of two cryptographic solutions (digital signatures and encryption) andelaborates on the reasons for using Security ICs in an ICS to support cryptography.

標(biāo)簽： 工業(yè)系統(tǒng) 安全問(wèn)題

上傳時(shí)間： 2013-10-09

上傳用戶：woshinimiaoye
libpcap is a system-independent interface for user-level packet capture. libpcap provides a portable

libpcap is a system-independent interface for user-level packet capture. libpcap provides a portable framework for low-level network monitoring. Applications include network statistics collection, Security monitoring, network debugging, etc.

標(biāo)簽： libpcap system-independent user-level interface

上傳時(shí)間： 2014-08-11

上傳用戶：saharawalker
重寫(xiě)了微軟提供SQLHelper(共用的數(shù)據(jù)庫(kù)調(diào)用接口） 1把SqlHelper的connectionString做成一個(gè)全局量

重寫(xiě)了微軟提供SQLHelper(共用的數(shù)據(jù)庫(kù)調(diào)用接口） 1把SqlHelper的connectionString做成一個(gè)全局量，統(tǒng)一設(shè)置數(shù)據(jù)庫(kù)連接字符串 2增加了返回特定表名的DataSet的各接口。可在項(xiàng)目的config文件設(shè)置數(shù)據(jù)庫(kù)連接字符串 private static string connectionString = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"]  <appSettings> <add key="ConnectionString" value="packet size=4096 user id=sa data source=localhost persist Security info=True initial catalog=NorthWind password= "/> </appSettings> 當(dāng)然可以把數(shù)據(jù)庫(kù)連接方法修改后直接用。

標(biāo)簽： connectionString SQLHelper SqlHelper 微軟

上傳時(shí)間： 2013-12-12

上傳用戶：釣鰲牧馬
項(xiàng)目描述: Env_audit is a program that ferrets out everything it can about the environment. It looks for

項(xiàng)目描述: Env_audit is a program that ferrets out everything it can about the environment. It looks for process IDs, UID, GID, signal masks, umask, priority, file descriptors, and environmental variables. It comes with test configurations for anacron, apache, atd, crond, GDB, inittab, logrotate, PHP, pppd, procmail, rsh, rxvt, sendmail, SSH, stunnel, sudo, xinetd, and xterm. env_audit是一個(gè)搜索有關(guān)環(huán)境的所有東西的程序。它查詢進(jìn)程IDs，UID, GID,信號(hào)掩碼，umask,優(yōu)先權(quán)，文件描述符，和環(huán)境變量。它提供了用于anacron, apache, atd, crond, GDB, inittab, logrotate, PHP, pppd, procmail, rsh, rxvt, sendmail, SSH, stunnel, sudo, xinetd, 和xterm的測(cè)試配置。類(lèi)別: Development Status: 5 - Production/Stable Environment: Console (Text Based) Intended Audience: System Administrators License: GNU General Public License (GPL) Operating System: POSIX Topic: Security

標(biāo)簽： environment everything Env_audit ferrets

上傳時(shí)間： 2013-12-02

上傳用戶：qweqweqwe
This module defines safer C library string * * routine replacements. These are meant to make C * * a

This module defines safer C library string * * routine replacements. These are meant to make C * * a bit more safe in reference to Security and * * robustness

標(biāo)簽： replacements defines library routine

上傳時(shí)間： 2014-01-04

上傳用戶：佳期如夢(mèng)

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