一种物理隔离系统的设计与实现

介绍了系统的结构框架，重点说明了利用PCI接口控制电路、网络接口电路和逻辑控制电路实现系统的自适应网络功能和内外网的安全物理隔离卡，该卡能自动地识别所连接网络设备的速率和工作方式，并将工作方式和速率调捂到正确的模式与之相适应。系统的管理软件包括安全策略管理模块、安全审计模块、数据库记录交换模、文件交换模块和邮件交换模块。以实现内外网数据安全高效的交换和管理，同时使用Windows DDK实现了基于NDIS的硬件驱动程序。这些关键技术的实现对相关课题研究具有普遍性的意义。     

基于PCI总线的物理隔离卡WDM架构驱动程序开发

本文介绍了采用PCI 9052作为PCI总线接口芯片的物理隔离卡的基本原理，重点说明如何应用美国Numega公司出品的DriverStudi。开发该卡在Windows 2000下的WDM架构驱动程序，并给出了驱动程序同上层管理软件通信的实现办法。     

安全隔离卡设计与应用

本文给出了一种对连网计算机硬盘信息进行访问控制的安全隔离卡实现方案．介绍了安全隔离卡的组成及工作原理．详细讨论了安全隔离卡的硬件设计、驱动程序设计及控制软件设计。该安全隔离卡采用对用户透明的物理隔离技术和网络连接控制技术．可对连网计算机的硬盘信息实施有效的保护。     

一种PC总线多功能扩展卡

讲述了ＰＣ总线多功能扩展卡的特性，包括软件编程、硬件设计及使用方法。由于该卡设计简单、成本低，具有通用Ｉ／Ｏ卡和Ａ／Ｄ卡的功能，且通过该卡Ｉ／Ｏ还可扩展其他接口电路，因此可广泛应用于小型微机自动控制系统中。     

隔离是最简单、安全、有效、可行的网络安全解决方案

目前，从全球来说，各种网络用户安全解决方案，如防火墙，CA认证，生物识别和数字签名等遍地皆是，以硬件为主包括防火墙、入侵检测系统、防病毒网关、VPN、物理隔离卡等产品更是令人眼花缭乱，但仍然缘何无法堵住安全的漏洞呢。     

物理隔离网闸原理及应用

文章重点对物理隔离网闸(GAP)的概念、工作原理、组成和功能进行了详细的介绍和探讨。然后从原理和性能方面对物理隔离网闸、物理隔离卡和防火墙进行了比较。并且对目前国内市场的产品情况进行了分析,对物理隔离网闸产品的应用作了探讨。     

基于FPGA的通信卡设计和实现

基于FPGA的通信卡设计原理。通信卡实现了4路ISDNU接口、4路RS232串口、2路音频接口及1路PCI总线之间的通信,该卡以FPGA(现场可编程门阵列)和MPC860为核心进行设计,利用FPGA的可编程性灵活实现了各接口之间的数据通信。本文给出了系统的硬件构架,并对串口传输功能和数字交换网络功能的FPGA实现进行了分析。     

物理隔离卡在政府部门信息安全中的应用

物理隔离卡可实现网络隔离和数据隔离,可以最大限度保证政府部门的内部信息网络不受来自互联网的黑客攻击,有效的解决政府部门信息安全问题,同时也为政府内部网划定了明确的安全边界,使得网络的可控性增强,便于内部管理。     

物理隔离卡在政府部门信息安全中的应用

物理隔离卡可实现网络隔离和数据隔离,可以最大限度保证政府部门的内部信息网络不受来自互联网的黑客攻击,有效的解决政府部门信息安全问题,同时也为政府内部网划定了明确的安全边界,使得网络的可控性增强,便于内部管理。     

羊城通变身市民“电子钱包”

本报讯7月初获悉,羊城通公司和交通银行广州分行、招商银行广州分行合作,发行集“电子钱包”和“金融功能”于一身的联名卡。市民开卡后将部分存款转至羊城通芯片账户,就可持该卡刷卡消费或乘坐地铁、巴士等。据介绍,该卡既有银行卡的磁条,又有羊城通的非接触式芯片。卡中银行账户部分将拥有与银行借记卡同样的功能,账户内的资金可用于刷卡消费和转账、交易、取现等银行卡业务,并计付利息;但羊城通芯片账户内的金额与普通的羊城通卡一样不计付利息。市民手持该卡,就可办理交行业务和实现羊城通充值消费功能,成为广大市民随身携带的“电子钱…     

隔离技术及其应用

分析了当前的防火墙、物理隔离、串并口隔离、双网卡隔离、包过滤等几种隔离技术 ,最后给出了一个设计好的串并口隔离技术在证券交易系统中的应用实例     

Multiapplication smart card: Towards an open smart card?

Smart cards were invented four decades ago so as to keep data secrets and to process them secretly. Even though their main goal are still the same today, the smart cards have been subject to many evolutions at both their hardware and software levels. Indeed they have been the target of numerous attacks and new demands from the market. These demands have expanded their domains of application. When they were born and during some thirty years smart cards have been monolithic platforms with a fixed piece of software dedicated to one single application. But in the mid 90's, some technologies appeared that have broken this situation by enabling to easily host several applications on the same card. These new technologies have changed the business models and pushed the smart cards towards new domains and to a world where they will integrate lots of new functionalities.The aim of this paper is to give an overview of the evolution of the smart cards (and of their application domains) from monolithic static pieces of hardware and software to a flexible multiapplication platforms. This paper also explores the possibilities to see open multiapplication cards in the future and exposes the breakthroughs that are required to achieve in order to produce such cards.     

基于自适应滤波算法的有线网卡指纹提取方法

有线设备接入认证是保障有线以太网安全的重要组成部分,其中MAC地址认证和设备数字证书认证是目前的主流身份认证方式,然而前者存在MAC地址易被篡改和伪造,后者存在系统复杂、使用不便等问题。基于设备指纹的物理层安全技术是解决这一问题的有效途径,并已在无线网络中得到广泛应用,但有线网络目前研究颇少。设备指纹的提取是物理层安全技术的一个重要环节,有线网络已有研究主要从10M有线网卡信号中提取指纹。本文提出了一种基于最小均方误差自适应滤波算法(LMS算法)从100M有线网卡信号中提取指纹的方法,该方法提取的网卡指纹产生自网卡及所在设备本身的物理特性,不可克隆,无法被篡改,而且指纹可直接通过分析网卡输出信号而得,简单方便。本文设计了一套基于LMS算法的网卡指纹提取系统,通过大量实验估算了合适的诸如收敛因子、滤波器阶数、数据长度等算法参数,并对提取的指纹进行了有效性验证。经过实验验证,使用本文方法提取的网卡指纹可有效识别出不同品牌和相同品牌不同类型的以太网网卡,在使用线性判别和集成子空间判别分类算法时,针对50块网卡的识别率可分别达到97.3%、98.5以上。     

A deep learning based bank card detection and recognition method in complex scenes

With the widespread use of mobile Internet, mobile payment has become a part of daily life, and bank card recognition in natural scenes has become a hot topic. Although printed character recognition has achieved remarkable success in recent years, bank card recognition is not limited to traditional printed character recognition. There are two types of bank cards: unembossed bank cards, such as most debit cards which usually use printed characters, and embossed bank cards, such as most credit cards which mainly use raised characters. Recognition of raised characters is very challenging due to its own characteristics, and there is a lack of fast and good methods to handle it. To better recognize raised characters, we propose an effective method based on deep learning to detect and recognize bank cards in complex natural scenes. The method can accurately recognize the card number characters on embossed and unembossed bank cards. First, to break the limitation that YOLOv3 algorithm is usually used for object detection, we propose a novel approach that enables YOLOv3 to be used not only for bank card detection and classification, but also for character recognition. The CANNYLINES algorithm is used for rectification and the Scharr operator is introduced to locate the card number region. The proposed method can satisfy bank card detection, classification and character recognition in complex natural scenes, such as complex backgrounds, distorted card surfaces, uneven illumination, and characters with the same or similar color to the background. To further improve the recognition accuracy, a printed character recognition model based on ResNet-32 is proposed for the unembossed bank cards. According to the color and morphological characteristics of embossed bank cards, raised character recognition model combining traditional morphological methods and LeNet-5 convolutional neural network is proposed for the embossed bank cards. The experimental results on the collected bank card dataset and bank card number dataset show that our proposed method can effectively detect and identify different types of bank cards. The accuracy of the detection and classification of bank cards reaches 100%. The accuracy of the raised characters recognition on the embossed bank card is 99.31%, and the accuracy of the printed characters recognition on the unembossed bank card reaches 100%.

     

An interactive design system for pop-up cards with a physical simulation

We present an interactive system that allows users to design original pop-up cards. A pop-up card is an interesting form of papercraft consisting of folded paper that forms a three-dimensional structure when opened. However, it is very difficult for the average person to design pop-up cards from scratch because it is necessary to understand the mechanism and determine the positions of objects so that pop-up parts do not collide with each other or protrude from the card. In the proposed system, the user interactively sets and edits primitives that are predefined in the system. The system simulates folding and opening of the pop-up card using a mass?Cspring model that can simply simulate the physical movement of the card. This simulation detects collisions and protrusions and illustrates the movement of the pop-up card. The results of the present study reveal that the user can design a wide range of pop-up cards using the proposed system.     

基于Linux的802.11b无线局域网数据包捕获方法*

数据包捕获是进行网络监测、流量分析等网管活动中所使用的基本技术。从无线局域网（WLAN）和有线局域网的区别出发,研究了WLAN包捕获的原理及无线网卡两种不同的捕包方法。     

用ROUTE命令实现双网卡路由配置

当电脑中只有一块网卡时,不会注意到路由表的存在。当电脑中安装了两块或者两块以上的网卡时,就需要人为控制WINDOWS的路由表。本文用ROUTE命令来实现双网卡路由配置。     

第二代身份证信息系统在便民生活中的应用设想

随着社会的进步和科技的发展,治安、交通、金融、医疗、通信、商业、社会保障和服务、防伪、跟踪等部门刷卡办业务将是未来的一种发展趋势,形形色色的磁条卡、IC卡在社会上流通,导致刷卡管理上的混乱和人们生活的不便,而＂一证在手,一卡通＂的方式将会因其具有方便、快捷、安全、实用等众多有利因素而最终成为现实。当二代证信息系统和一卡通服务终端设备在社会上投入运行时,无论系统软件的维护和更新,还是各类一卡通服务终端设备的研发和更新升级,都将有不可估量的巨大市场。     

一个具有优盘功能的USB无线网卡的实现方案

本文主要介绍了USB无线网卡的实现方案,对一些细节做了必要的说明,并比较了现有无线网卡方案的优缺点和重点介绍了网卡节能方面的特殊设计。使用USB接口的另一个好处,也是一个很重要的特点就是网卡上自带了一个优盘,用于存放驱动程序,在Windows系统下可以实现自动运行安装。网卡驱动是基于微软NDIS框架下的网卡驱动开发,是一个具有WDM底层的NDIS微端口驱动。     

Implementation of Java card Virtual Machine

Java card is a new system for programming smart cards,which is based on the Java language and Virtual Machine,Java card programs(applets)run in Java Card Runtime Environment (JCRE)including the java Card Virtual Machine(JCVM),the framework,the assoicated native methods and the API(Application Programming Interface),JCVM is implemented as two separate pieces: off-card VM(Virtual Machine)and on-card VM.The stack model and heap memory structure used by on-car VM and exception handling are introduced.Because there are limited resources wihin smart card environment,and garbage collection is not supported in JCVM,the preferred way to exception handling does not directly involve the use of throw,although the throw keyowrd is supported.Security is the most important feature of smart card.The Java Card applet security feature is also discussed.