TrusNet: Peer-to-Peer Cryptographic Authentication

Originally, the Internet was meant as a general purpose communication protocol, transferring primarily text documents between interested parties. Over time, documents expanded to include pictures, videos and even web pages. Increasingly, the Internet is being used to transfer a new kind of data which it was never designed for. In most ways, this new data type fits in naturally to the Internet, taking advantage of the near limit-less expanse of the protocol. Hardware protocols, unlike previous data types, provide a unique set security problem. Much like financial data, hardware protocols extended across the Internet must be protected with authentication. Currently, systems which do authenticate do so through a central server, utilizing a similar authentication model to the HTTPS protocol. This hierarchical model is often at odds with the needs of hardware protocols, particularly in ad-hoc networks where peer-to-peer communication is prioritized over a hierarchical model. Our project attempts to implement a peer-to-peer cryptographic authentication protocol to be used to protect hardware protocols extending over the Internet. The TrusNet project uses public-key cryptography to authenticate nodes on a distributed network, with each node locally managing a record of the public keys of nodes which it has encountered. These keys are used to secure data transmission between nodes and to authenticate the identities of nodes. TrusNet is designed to be used on multiple different types of network interfaces, but currently only has explicit hooks for Internet Protocol connections. As of June 2016, TrusNet has successfully achieved a basic authentication and communication protocol on Windows 7, OSX, Linux 14 and the Intel Edison. TrusNet uses RC-4 as its stream cipher and RSA as its public-key algorithm, although both of these are easily configurable. Along with the library, TrusNet also enables the building of a unit testing suite, a simple UI application designed to visualize the basics of the system and a build with hooks into the I/O pins of the Intel Edison allowing for a basic demonstration of the system

Service-Relationship Programming Framework for the Social IoT

We argue that for a true realization of innovative programming opportunities for smart spaces, the developers should be equipped with informative tools that assist them in building domain-related applications. Such tools should utilize the services offered by the space's smart things and consider the different relationships that may tie these services opportunistically to build applications. In this paper, we utilize our Inter-thing relationships programming framework to present a distributed programming ecosystem. The framework broadens the restricted set of thing-level relationships of the evolving social IoT paradigm with a set of service-level relationships. Such relationships provide guidance into how services belonging to different things can be combined to build meaningful applications. We also present a uniform way of describing the thing services and the service-level relationships along with new capabilities for the things to dynamically generate their own services, formulate the corresponding programmable interfaces (APIs) and create an ad-hoc network of socially related smart things at runtime. We then present the semantic rules that guide the establishment of IoT applications and finally demonstrate the features of the framework through a proof-of-concept application

DPMbox: An interactive user-friendly web interface for a disk-based grid storage system

Disk Pool Manager (DPM) es un sistema de gestión de almacenamiento que se usa dentro del Worldwide LHC Computing Grid. Ha sido desarrollado en el CERN y actualmente es el más usado dentro de esta infraestructura de computación distribuida. Avanzando hacia el uso de estándares que faciliten el uso de DPM, recientemente se implementó una interfaz WebDAV (una extensión del protocolo HTTP) para este sistema. A pesar de ello esta interfaz aún ofrece una funcionalidad básica, sobre todo accediendo desde un navegador web, lo que hace que siga siendo necesario usar algunas herramientas especiales. El objetivo de DPMbox es ofrecer una interfaz realmente amigable, intuitiva y que pueda usarse con herramientas ya conocidas por los usuarios, como es el caso de un navegador web, atrayendo así a usuarios menos técnicos de la comunidad científica. El proyecto basa su construcción en la interfaz WebDAV implementada y hace uso de tecnologías maduras y estándar que permiten este desarrollo como JavaScript/ECMAScript a través de jQuery u otras librerías de apoyo, así como HTML y CSS. Al realizarse como colaboración con el CERN el desarrollo se centra en las funcionalidades requeridas por el sistema DPM. Aún así, uno de los objetivos es que habiendo cumplido los requisitos iniciales, el sistema sea extensible y facilmente adaptable, haciendo posible su uso con otros sistemas que ofrezcan el protocolo WebDAV de manera general.Disk Pool Manager (DPM) is a lightweight storage management system for grid sites. It has been developed in CERN (European Organization for Nuclear Research), and it is the most widely adopted solution in the Worldwide LHC Computing Grid infrastructure. Attracting less technical users has been an objective for the last years, thus, as an effort to move towards standard protocols that removes the need of special tools, DPM started offering a WebDAV (an extension of the HTTP protocol) interface, facilitating the access through commonly available tools, i.e. web browsers or WebDAV clients. However, this interface only provides basic functionality, especially when accessed from a web browser, making it still necessary to use some specific tools. DPMbox is a project for a friendly web interface that allows both technical and nontechnical users to manage their data from and into the grid by accessing it trough their web browsers. The project has been built getting advantage of the implemented WebDAV front-end, and as a web development it uses standard and mature web technologies like HTML, CSS and JavaScript/ECMAScript as its core language. As a collaboration with CERN, the development has been focused on the functionality required by the DPM, but one of the objectives is to make DPMbox easily expandable and flexible, enabling its use with other systems that offer the WebDAV protocol

Засіб керування довготривалими транзакціями в XML-орієнтованій СУБД

The review methods of transaction management and completed the design and development controls long-term transactions of semi-structured data in XML-oriented DBMSПроведен анализ методов управления транзакциями и выполнено проектирование и разработка средств управления длительными транзакциями полуструктурироваными данными в XML-ориентированной СУБДПроведено огляд методів керування транзакціями і виконано проектування та розробку засобу керування довготривалими транзакціями з напівструктурованими даними в XML- орієнтованійСУБД

Generic and updatable XML value indices covering equality and range lookups

textabstractWe describe a collection of indices for XML text, element, and attribute node values that (i) consume little storage, (ii) have low maintenance overhead, (iii) permit fast equilookup on string values, and (iv) support range-lookup on any XML typed value (e.g., double, dateTime). The equilookup string value index depends on an elaborate hash function and on an associative combination function to facilitate updates on both mixed-content and element nodes. We also present techniques for creating range-lookup indices supporting any ordered XML typed value. These indices rely on a finite state machine that accepts the type specific language, and on a state combination table for combining states to speed-up updates. We evaluate the stability of the hash function, the storage overhead, and the indices creation and maintenance time in the context of the open-source XML database system MonetDB/XQuery

Composite - its endless journey.

A composite, in its general term, is a solid material that results when two or more different substances, each with its own characteristics and properties, are combined to create a new substance whose properties are superior to those of the original components in a specific application, Composites are of greatest use in the aerospace industry in which their stiffness, lightness, and heat resistance make them the materials of choice in reinforcing the engine cowls, wings, doors, and flaps of aircraft. Composite materials are also used in rackets and other sports equipment, in cutting tools, and in certain parts of automotive engines

Building E-education platform for design-oriented learning

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004.Includes bibliographical references (p. 149-155).Design-oriented learning requires tools that support creative processes and student-to-student and student-to-faculty interactions. While most present E-Education systems perform as the asynchronous distribution channel for teaching material, they usually offer little support for project based design processes. This research maps out the key learning events in design classes at MIT's Department of Mechanical Engineering, and proposes guidelines for building E-Education systems to support the unique characteristics of design-oriented learning. Two creative learning processes are identified and two independent, yet tightly related, software systems are implemented and evaluated. The first application, the Peer Review and Engineering Process (PREP), is a web system that helps instructors and students conduct and manage peer review evaluation of design concepts. The second is a real time application called InkBoard that leverages the Tablet PC and Ink medium to provide real-time collaborative sketching over TCP/IP networks. A new streaming network protocol for transferring Ink objects is proposed and implemented. A comparative study against other ink-enabled protocols is also presented.by Hai Ning.Ph.D