一种基于自验证公钥的门限代理签名方案的安全性分析

Xue和Cao提出了一种基于自验证公钥的门限代理签名方案,然而,该方案是不安全的。给出了对该方案一种攻击：攻击者获得一个合法的原始签名人发送给代理签名人的签名了的授权证书以及代理签名人生成的一个有效的代理签名后,能够伪造出一个新的对相同消息的代理签名,而原始签名人变为攻击者自己,由于验证者并不能验证代理签名人到底是代表谁生成了代理签名,这样,攻击者就获得了与合法原始签名人相同的权益。特别地,代理签名人代表原始签名人生成的门限代理签名可以被转化为普通的门限签名。分析了该方案存在安全漏洞的原因并提出了改进措施,改进措施能有效地弥补原方案存在的安全缺陷。     

物联网时代的智慧型物品探析

阐述了以物与物之间交流为标志的物联网将是一种无处不在的泛在网络,其目的是使地球上的"物"变得更加智慧。针对物联网中的物是具有感知和交流功能的智慧物之特点,分析了用智慧型物品的术语来表述物联网中的人造物可以体现与传统智能产品的差异和物联网特征,提出了智慧型物品的智慧主要来自于网络系统各类智慧解决方案以及智慧型物品的设计策略和理念。     

An Efficient Proxy Blind Signcryption Scheme for IoT

Recent years have witnessed growing scientific research interest in the Internet of Things (IoT) technologies, which supports the development of a variety of applications such as health care, Industry 4.0, agriculture, ecological data management, and other various domains. IoT utilizes the Internet as a prime medium of communication for both single documents as well as multi-digital messages. However, due to the wide-open nature of the Internet, it is important to ensure the anonymity, untraceably, confidentiality, and unforgeability of communication with efficient computational complexity and low bandwidth. We designed a light weight and secure proxy blind signcryption for multi-digital messages based on a hyperelliptic curve (HEC). Our results outperform the available schemes in terms of computational cost and communication bandwidth. The designed scheme also has the desired authentication, unforgeability of warrants and/or plaintext, confidentiality, integrity, and blindness, respectively. Further, our scheme is more suitable for devices with low computation power such as mobiles and tablets.     

泛在电力物联网研究现状分析

泛在电力物联网的建设主要是将信息化和人工智能等新技术、新理念应用于企业发展进程中,以提高电力企业的技术水平,同时这也是服务于国家战略需要,符合推动互联网、大数据、人工智能和制造业深度融合的战略要求,其对推动我国的科技进步、产业升级和提高人民生活水平具有重要意义。对泛在电力物联网的提出背景、建设目标和意义等进行介绍;讨论各界对泛在电力物联网的态度和相应措施;对泛在电力物联网建设的技术支持进行分析;举例说明泛在电力物联网在当下的典型应用;最后指出泛在电力物联网发展过程中可能遇到的问题。     

Blockchain-Enabled EHR Framework for Internet of Medical Things

The Internet of Medical Things (IoMT) offers an infrastructure made of smart medical equipment and software applications for healthcare services. Through the internet, the IoMT is capable of providing remote medical diagnosis and timely health services. The patients can use their smart devices to create, store and share their electronic health records (EHR) with a variety of medical personnel including medical doctors and nurses. However, unless the underlying commination within IoMT is secured, malicious users can intercept, modify and even delete the sensitive EHR data of patients. Patients also lose full control of their EHR since most healthcare services within IoMT are constructed under a centralized platform outsourced in the cloud. Therefore, it is appealing to design a decentralized, auditable and secure EHR system that guarantees absolute access control for the patients while ensuring privacy and security. Using the features of blockchain including decentralization, auditability and immutability, we propose a secure EHR framework which is mainly maintained by the medical centers. In this framework, the patients’ EHR data are encrypted and stored in the servers of medical institutions while the corresponding hash values are kept on the blockchain. We make use of security primitives to offer authentication, integrity and confidentiality of EHR data while access control and immutability is guaranteed by the blockchain technology. The security analysis and performance evaluation of the proposed framework confirms its efficiency.     

Optimized Identification with Severity Factors of Gastric Cancer for Internet of Medical Things

The Internet of Medical Things (IoMT) emerges with the vision of the Wireless Body Sensor Network (WBSN) to improve the health monitoring systems and has an enormous impact on the healthcare system for recognizing the levels of risk/severity factors (premature diagnosis, treatment, and supervision of chronic disease i.e., cancer) via wearable/electronic health sensor i.e., wireless endoscopic capsule. However, AI-assisted endoscopy plays a very significant role in the detection of gastric cancer. Convolutional Neural Network (CNN) has been widely used to diagnose gastric cancer based on various feature extraction models, consequently, limiting the identification and categorization performance in terms of cancerous stages and grades associated with each type of gastric cancer. This paper proposed an optimized AI-based approach to diagnose and assess the risk factor of gastric cancer based on its type, stage, and grade in the endoscopic images for smart healthcare applications. The proposed method is categorized into five phases such as image pre-processing, Four-Dimensional (4D) image conversion, image segmentation, K-Nearest Neighbour (K-NN) classification, and multi-grading and staging of image intensities. Moreover, the performance of the proposed method has experimented on two different datasets consisting of color and black and white endoscopic images. The simulation results verified that the proposed approach is capable of perceiving gastric cancer with 88.09% sensitivity, 95.77% specificity, and 96.55% overall accuracy respectively.     

物联网时代的人性化产品设计探讨

目的探讨在物联网时代的人性化产品的设计策略。方法分析传统时期和物联网时期人们对产品在安全性、舒适性、艺术性和环保性方面的要求,总结物联网时代人们对人性化更高层次的需求。结论提出产品设计在物联网技术的基础上,将人性化理念贯穿于产品设计的各个阶段,包括分析阶段、设计阶段、实现阶段,挖掘使用者的潜在需求,构思人性化的智慧型产品创意,模拟产品的真实效果。     

A Formal Testing Model for Operating Room Control System Using Internet of Things

Technological advances in recent years have significantly changed the way an operating room works. This work aims to create a platform to solve the problems of operating room occupancy and prepare the rooms with an environment that is favorable for all operations. Using this system, a doctor can control all operation rooms, especially before an operation, and monitor their temperature and humidity to prepare for the operation. Also, in the event of a problem, an alert is sent to the nurse responsible for the room and medical stuff so that the problem can be resolved. The platform is tested using a Raspberry PI card and sensors. The sensors are connected to a cloud layer that collects and analyzes the temperature and humidity values obtained from the environment during an operation. The result of experimentations is visualized through a web application and an Android application. The platform also considers the security aspects such as authorization to access application functionalities for the Web and the mobile applications. We can also test and evaluate the system’s existing problems and vulnerabilities using the IEEE and owasp IoT standards. Finally, the proposed framework is extended with a model based testing technique that may be adopted for validating thesecurity aspects.     

A Fair Blind Signature Scheme to Revoke Malicious Vehicles in VANETs

With the rapid development of IoT (Internet of Things), VANETs (Vehicular Ad-Hoc Networks) have become an attractive ad-hoc network that brings convenience into people’s lives. Vehicles can be informed of the position, direction, speed and other real-time information of nearby vehicles to avoid traffic jams and accidents. However, VANET environments could be dangerous in the absence of security protection. Because of the openness and self-organization of VANETs, there are plenty of malicious pathways. To guarantee vehicle security, the research aims to provide an effective VANET security mechanism that can track malicious vehicles as necessary. Therefore, this work focuses on malicious vehicles and proposes an anonymous authentication scheme in VANETs based on the fair blind signature to protect vehicle security.     

基于物联网的新书荐读系统设计

目的研究基于物联网的新书荐读系统并对其进行设计。方法依据对图书推广现状的分析和全民阅读调研数据的分析,应用物联网技术、热敏打印技术和B/S架构程序技术,实现新书荐读机终端与读者用户的交互,完成荐读图书数据的展示和用户行为信息的获取。结论在物联网技术支持下,构建了新书荐读系统,其中的荐读服务平台将读者与出版社连接起来,荐读机终端为用户提供了新的图书推荐方式及纸质阅读体验,从而提高了用户阅读质量,并促进了新书推广。     

物联网时代的智慧型手机设计探析

在当下全球物联网建设不断发展的背景下,以手机设计为研究对象,对未来手机设计进行探索,提出了在未来物联网背景下智慧型手机设计的目标将是以高感知、高智能化、高交互化为载体,根据用户需要提供即时、高效和准确的解决方案;设计方法上,将以用户目标为导向,以用户与手机可能的多种交互方式为研究设计重点,以泛在数据导向设计策略、群体智慧支持设计创新、整合创新提升用户满意度等方法来推进最终设计方案。     

凸现物联网特征的新型户外用品设计研究

分析了物联网环境下支持泛户外运动的新型户外用品,与传统户外用品的区别及其所具有的智能化、网络化、绿色化的显著特征和丰富的体验价值。在此基础上,提出了未来新型户外用品之设计理念,在科学技术的不断创新与发展的基础上,必定会发生转变,将呈现出由物质产品到非物质体验,由初步智能到全面智慧,由个体环保到整体共生的发展趋势。     

面向物联网的信息家电设计之繁与简

针对信息家电与传统家电相比之下存在的特点和优势,结合物联网技术的发展和应用,提出了新技术环境下信息家电数字化、智能化的未来发展方向。根据信息家电功能、形态、情感因素的设计,阐述了其设计的复杂性与简洁性之间需要制约和平衡,以达到满足消费者物质和精神双层需要的目的,从而建立一种超智能家居环境,并提高人们的生活质量。     

物联网时代智慧型移动设备设计探索

基于物联网技术的发展与智慧型移动设备关系的研究,从友好人机交互的起点、自然交互体验的实现过程,创新移动应用的发展方向3个方面,分析了智慧型移动设备具有的感知化、宜人化和多维化的"智慧特征"。在此基础上,阐述了如何通过物联网改变人们使用移动终端的体验,提出了区别于传统的未来智慧型移动设备的设计理念,信息跨平台传播、交互方式的多通道拓展以及设计对象的转变。     

泛在电力物联网实施策略研究

建设泛在电力物联网是实现能源转型目标的必要手段。从电力系统发展历程和面临的问题出发,论述了泛在电力物联网的意义,提出了实施策略和可能遇到的问题。为实现能源转型,风电光电等可再生能源装机容量不断增加。这些能源的随机性给电力系统的功率平衡造成巨大压力,有时不得不弃掉一部分风电光电。为了维持电力系统的稳定运行、提高风电光电的利用率,必须对可控负荷和分散式发电进行控制。因此,需要用互联网连接可控负荷和分散式发电,形成泛在电力物联网。常规发电厂、大型风电场、光电站等已经和电力系统连接了,调度可以直接控制。因此,泛在电力物联网主要任务是连接负荷和分散式发电,尤其是可控负荷。电动汽车是可控负荷中最容易实现可控的,其次是热水器、电热锅炉和空调等。利用泛在电力物联网,协同控制风电光电、可控负荷、分散式发电等,可以提高风电光电利用率,实现能源转型目标。     

QoS-Aware and Resource-Efficient Dynamic Slicing Mechanism for Internet of Things

With the popularization of terminal devices and services in Internet of things (IoT), it will be a challenge to design a network resource allocation method meeting various QoS requirements and effectively using substrate resources. In this paper, a dynamic network slicing mechanism including virtual network (VN) mapping and VN reconfiguration is proposed to provide network slices for services. Firstly, a service priority model is defined to create queue for resource allocation. Then a slice including Virtual Network Function (VNF) placement and routing with optimal cost is generated by VN mapping. Next, considering temporal variations of service resource requirements, the size of network slice is adjusted dynamically to guarantee resource utilization in VN reconfiguration. Additionally, load balancing factors are designed to make traffic balanced. Simulation results show that dynamic slicing mechanism not only saves 22% and 31% cost than static slicing mechanism with extending shortest path (SS_ESP) and dynamic slicing mechanism with embedding single path (DS_ESP), but also maintains high service acceptance rate.     

论物联网时代的到来对工业设计的影响

通过分析物联网的概念、相关的关键技术、主要应用领域与现状及当前的不足之处,提出物联网时代的到来,对工业设计可能产生的影响。论述了物联网技术得到广泛应用后,可能引发的工业设计在设计对象、设计方法、设计工具上的变革。并且,结合最新的基于物联网技术的产品,分析了物联网时代下产品呈现出的信息交互频繁、远程交互等特点。     

面向物联网时代的交互系统限制因素研究

阐述了限制因素由传统交互系统的唯一选择、静态限制向物联网时代的多种选择、动态限制演变的趋势。结合传统交互系统限制因素的产生模式、作用机理,分析了物联网时代限制因素的新特点。在此基础上,针对限制因素对用户的打扰程度、控制感和情感体验3个方面分析了物联网时代限制因素的价值,为在交互设计中全面认识和运用限制因素提供了新的思路。     

基于增强现实技术的物联网数据呈现与交互

目的分析运用增强现实技术支持物联网数据呈现与交互的应用方式,并归纳其技术实现所需要的支持,为进一步的研究与应用提供思路和方法。方法根据增强现实技术应用于物联网数据呈现与交互的适用特性,对其应用可能进行分析描述。结论增强现实技术在物联网数据呈现、数据关联、数据交互、数据模拟、远程增强与协同操作等方面均有广阔的应用空间,能够提高数据呈现与交互过程中的直观程度、降低认知负担、支持更多样的呈现与交互形式,帮助建立更加智能与易用的物联网系统。     

物联网产品品牌形成机理及其建设

目的研究物联网产品品牌的形成机理和物联网产品品牌建设的关键方法。方法以传统品牌的形成机理为研究分析的基础,通过分析物联网对传统品牌带来的冲击,结合具体案例的对比,从物联网时代的品牌的根本、品牌的媒介、品牌的存在、品牌的价值4个方面发生的改变分别进行研究。结论在未来物联网技术平台上,品牌评价将会数据化,品牌符号属性会逐渐弱化。物联网化的产品品牌培育的关键在于,品牌根本的强化和对能实现产品、用户和企业三方直接联通的物联网品牌感知平台的设计、建设、使用和推广。