A robust ElGamal‐based password‐authentication protocol using smart card for client‐server communication

Smart card‐based client‐server authentication protocol is well popular for secure data exchange over insecure and hostile networks. Recently, Lee et al. put forward an authentication protocol by utilizing ElGamal cryptosystem and proved that it can withstand known security threats. This article evinces that the protocol of Lee et al. is unwilling to protect various important security vulnerabilities such as forgery attack and off‐line password‐guessing attack. To vanquish these loopholes, this article presents a robust authentication protocol for client‐server communication over any insecure networks. The security explanation of our protocol has done through the formal and informal mechanism and its outcome makes sure that the designed protocol is strong enough to resist the known vulnerabilities. In addition, we have simulated our protocol using ProVerif online software and its results certify that our protocol is safe against private information of the client and server. This paper also has made performance estimation of the presented protocol and others, and the outcome favors the presented protocol.     

Low cost telemetry with PC sound card for chemical analysis applications

This work describes the development of a telemetric system in conjunction with a computer sound card for recording of signals. For signal transmission, a transmission wireless microphone was utilized, making the telemeter compatible with the sound card normally equipped inside a personal computer. The developed telemeter is a low-cost apparatus capable of remote monitoring. With the sampling rate of 10 Hz, 100% accuracy was obtained up to a distance of 30 m. The precision was good (%RSD = 0.03-0.09), with relatively low noise. The effective signal range was from 0 to 2 V, with approximately 1100 working steps (greater than 10 bit A/D). The telemetric system was shown to be suitable for wireless recording of outputs from spectrophotometer and pH meter. Potential applications in chemical analysis were demonstrated.     

双通道声卡构成多通道数据采集系统

介绍了一种采用通用具有双模拟输入通道声卡构成多通道数据采集系统的方法，并介绍这种方法在施工噪声监测系统中的应用，应用表明这种方法的实用价值。     

非接触式IC读卡器的设计

非接触式IC卡又称为射频卡,是IC卡领域的一项新兴技术,它是射频识别技术和IC卡技术相结合的产物。非接触式IC卡读写器是非接触式IC卡应用系统的关键设备之一,设计一款更为方便有效的读写器对于构建一个便捷实用的应用系统来说有着重要的意义。本文设计是基于MFRC522射频芯片和STC11F32XE单片机的非接触式IC卡读卡器,并用该读卡器实现了对射频IC卡的读写操作。实际操作表明,本文设计的读写器能够实现对射频卡的制卡、扣费及充值功能,成本低廉,便于携带,且容易操作。     

用于强度解调型非本征法布里-珀罗腔光纤传感器的光电转换卡

利用双光路加参考臂的方法设计了运用于强度解调型非本征法布里-珀罗腔光纤传感器的新型光电转换卡,以有效地抑制或消除光源和光路中其他有源及无源器件的不稳定性对传感器精度和稳定性的负面影响。在26℃28℃的环境温度条件下,设计的光电转换卡短期不稳定性不大于0.0702%,测量精度好于0.1%。     

智能化系统在小区建设中的应用

住宅小区的智能化系统是运用计算机技术、网络通讯技术、控制技术和IC卡技术，通过有效的传输介质，实现多元化信息管理与服务、物业管理与安防、居所智能化的系统集成。     

银行卡号Luhn校验算法的JS实现

随着互联网技术的不断发展与普及,作为电子商务的一部分,网上支付越来越受到人们的关注.在系统开发过程中时,如何准确的录入银行卡号十分关键.使用JavaScript设计一段基于Luhn校验算法的脚本,通过浏览器客户端实现验证,有助于快捷、高效的完成支付.     

TrueFFS文件系统技术研究及实现

TrueFFS技术的出现为丰富的flash存储设备提供了一个统一的块设备接口。论文简要介绍了TrueFFS的工作原理,说明其在flash存储应用中的关键作用,并通过实际案例展示了TrueFFS的硬件实现特点。文中系基于VxWorks操作系统所写,但目前TrueFFS几乎已支持所有的操作系统。     

一种基于智能卡的视频终端保护方法*1

针对政府部门、军方机构在使用远程视频会议系统时,可能存在非法设备或者非法用户对数据的捕获、窃听以及对正常会议的攻击干扰等安全问题.通过分析当前视频会议流程,结合智能卡对数据保护性高、更新维护方便、成本低廉的优势,提出一种软硬件结合的数据保护方案,对终端设备植入智能卡芯片,从设备角度提供会议系统的终端身份识别、信令鉴别、媒体流加密等多重保护.与当前软安全方案相比,整个方案操作性强、效率高,可有效提升视频会议系统的安全性.     

SAN技术在油田勘探开发一体化的应用

近几年随着吐哈油田勘探开发科研工作的不断深入,地学科研数据量逐年增多,加之并行机、PC集群的引进和高效利用,对数据访问速度、数据安全、数据冗灾提出了越来越高的要求,原有的DAS存储由于存在分立式存储孤岛、数据访问速度慢、数据安全性差等原因,以寻求一种更加安全、高效地存储技术来进行巨量数据的管理。SAN存储技术的问世,是存储技术发展过程中的一次重大技术革命,尤其在面向大容量数据多服务的高速处理中,以其高速访问,安全存储,数据共享,数据备份,数据迁移,冗灾恢复等优势,逐渐广泛应用于石油、银行、视频、气象、图书管理、军事等行业。