Robert W. Taylor Papers M2281
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Towards a Secure Agent Society
Towards A Secure Agent So ciety Qi He Katia Sycara The Rob otics Institute The Rob otics Institute Carnegie Mellon University Carnegie Mellon University Pittsburgh, PA 15213, U.S.A. Pittsburgh, PA 15213, U.S.A [email protected] [email protected] March 23, 1998 Abstract We present a general view of what a \secure agent so ciety" should b e and howtode- velop it rather than fo cus on any sp eci c details or particular agent-based application . We b elieve that the main e ort to achieve security in agent so cieties consists of the following three asp ects:1 agent authentication mechanisms that form the secure so ciety's foundation, 2 a security architecture design within an agent that enables security p olicy making, se- curity proto col generation and security op eration execution, and 3 the extension of agent communication languages for agent secure communication and trust management. In this pap er, all of the three main asp ects are systematically discussed for agent security based on an overall understanding of mo dern cryptographic technology. One purp ose of the pap er is to give some answers to those questions resulting from absence of a complete picture. Area: Software Agents Keywords: security, agent architecture, agent-based public key infrastructure PKI, public key cryptosystem PKCS, con dentiality, authentication, integrity, nonrepudiation. 1 1 Intro duction If you are going to design and develop a software agent-based real application system for elec- tronic commerce, you would immediately learn that there exists no such secure communication between agents, which is assumed by most agent mo del designers. -
1. Course Information Are Handed Out
6.826—Principles of Computer Systems 2006 6.826—Principles of Computer Systems 2006 course secretary's desk. They normally cover the material discussed in class during the week they 1. Course Information are handed out. Delayed submission of the solutions will be penalized, and no solutions will be accepted after Thursday 5:00PM. Students in the class will be asked to help grade the problem sets. Each week a team of students Staff will work with the TA to grade the week’s problems. This takes about 3-4 hours. Each student will probably only have to do it once during the term. Faculty We will try to return the graded problem sets, with solutions, within a week after their due date. Butler Lampson 32-G924 425-703-5925 [email protected] Policy on collaboration Daniel Jackson 32-G704 8-8471 [email protected] We encourage discussion of the issues in the lectures, readings, and problem sets. However, if Teaching Assistant you collaborate on problem sets, you must tell us who your collaborators are. And in any case, you must write up all solutions on your own. David Shin [email protected] Project Course Secretary During the last half of the course there is a project in which students will work in groups of three Maria Rebelo 32-G715 3-5895 [email protected] or so to apply the methods of the course to their own research projects. Each group will pick a Office Hours real system, preferably one that some member of the group is actually working on but possibly one from a published paper or from someone else’s research, and write: Messrs. -
Marconi Society - Wikipedia
9/23/2019 Marconi Society - Wikipedia Marconi Society The Guglielmo Marconi International Fellowship Foundation, briefly called Marconi Foundation and currently known as The Marconi Society, was established by Gioia Marconi Braga in 1974[1] to commemorate the centennial of the birth (April 24, 1874) of her father Guglielmo Marconi. The Marconi International Fellowship Council was established to honor significant contributions in science and technology, awarding the Marconi Prize and an annual $100,000 grant to a living scientist who has made advances in communication technology that benefits mankind. The Marconi Fellows are Sir Eric A. Ash (1984), Paul Baran (1991), Sir Tim Berners-Lee (2002), Claude Berrou (2005), Sergey Brin (2004), Francesco Carassa (1983), Vinton G. Cerf (1998), Andrew Chraplyvy (2009), Colin Cherry (1978), John Cioffi (2006), Arthur C. Clarke (1982), Martin Cooper (2013), Whitfield Diffie (2000), Federico Faggin (1988), James Flanagan (1992), David Forney, Jr. (1997), Robert G. Gallager (2003), Robert N. Hall (1989), Izuo Hayashi (1993), Martin Hellman (2000), Hiroshi Inose (1976), Irwin M. Jacobs (2011), Robert E. Kahn (1994) Sir Charles Kao (1985), James R. Killian (1975), Leonard Kleinrock (1986), Herwig Kogelnik (2001), Robert W. Lucky (1987), James L. Massey (1999), Robert Metcalfe (2003), Lawrence Page (2004), Yash Pal (1980), Seymour Papert (1981), Arogyaswami Paulraj (2014), David N. Payne (2008), John R. Pierce (1979), Ronald L. Rivest (2007), Arthur L. Schawlow (1977), Allan Snyder (2001), Robert Tkach (2009), Gottfried Ungerboeck (1996), Andrew Viterbi (1990), Jack Keil Wolf (2011), Jacob Ziv (1995). In 2015, the prize went to Peter T. Kirstein for bringing the internet to Europe. Since 2008, Marconi has also issued the Paul Baran Marconi Society Young Scholar Awards. -
Oral History of Butler Lampson
Oral History of Butler Lampson Interviewed by: Alan Kay Recorded: August 22, 2006 Cambridge, Mass. CHM Reference number: X3697.2007 © 2006 Computer History Museum Oral History of Butler Lampson Alan Kay: Part of my job here as given by the Computer History Museum is to try and get a few good words from you that we could use as the opening blurb for your award from the Computer History Museum. But also to get an oral history. Butler Lampson: I was going to say, I thought the job was to record hours of brilliant conversation that historians in 2100 will pore over. Kay: That is your job. My job is to only to try and instigate it. My theory about this thing is that you should not try and talk short. Lampson: Well, we’ve got lots of time right? Kay: Okay. We do have lots of time and tape is cheap. Lampson: Tape is cheap. Right. My sister’s a film editor and she hates it. She says things were much better in the days when film was expensive, because people would think about what they shot. Now, she says, they shoot hundreds of hours of crap and then they expect the editor to sort it out. Kay: We have to transcribe those hundreds of hours. Lampson: Yeah. Somebody’s got to look at it, it’s got to be fussed around with, and besides, she says, frequently in the whole of hundreds of hours you don’t find what you want because nobody thought about it beforehand. Kay: You remember Bonnie, my wife, ran a film and video company for ten years. -
I: the Conception
Excerpt from: Mayo, Keenan and Newcomb, Peter. “How the Web Was Won,” Vanity Fair, July 2008. I: The Conception Paul Baran, an electrical engineer, conceived one of the Internet’s building blocks—packet switching— while working at the Rand Corporation around 1960. Packet switching breaks data into chunks, or “packets,” and lets each one take its own path to a destination, where they are re-assembled (rather than sending everything along the same path, as a traditional telephone circuit does). A similar idea was proposed independently in Britain by Donald Davies. Later in his career, Baran would pioneer the airport metal detector. Paul Baran: It was necessary to have a strategic system that could withstand a first attack and then be able to return the favor in kind. The problem was that we didn’t have a survivable communications system, and so Soviet missiles aimed at U.S. missiles would take out the entire telephone- communication system. At that time the Strategic Air Command had just two forms of communication. One was the U.S. telephone system, or an overlay of that, and the other was high-frequency or shortwave radio. So that left us with the interesting situation of saying, Well, why do the communications fail when the bombs were aimed, not at the cities, but just at the strategic forces? And the answer was that the collateral damage was sufficient to knock out a telephone system that was highly centralized. Well, then, let’s not make it centralized. Let’s spread it out so that we can have other paths to get around the damage. -
Program on Information Resources Policy
INCIDENTAL PAPER Growing Up With the Information Age John C. B. LeGates April 2011 Program on Information Resources Policy Center for Information Policy Research Harvard University The Program on Information Resources Policy is jointly sponsored by Harvard University and the Center for Information Policy Research. Chairman Managing Director Anthony G. Oettinger John C. B. LeGates John LeGates began his career as an entrepreneur in the earliest days of computer communications and networking. He was the first to put computers in schools and later in hospitals. He built the first academic computer-resource-sharing network and was a member of the Arpanet NWG, the original Internet design team. Since 1973 he has been a member of the Harvard faculty, where he co-founded the Program on Information Resources Policy. Copyright © 2011 by the President and Fellows of Harvard College. Not to be reproduced in any form without written consent from the Program on Information Resources Policy, Harvard University, Maxwell Dworkin Bldg. 125, 33 Oxford St., Cambridge MA 02138. 617-495-4114 E-mail: [email protected] URL: http://www.pirp.harvard.edu ISBN 0-9798243-3-8 I-11-3 LeGates Life and Times DRAFT February 1, 1998 NOTES ON GROWING UP WITH THE INFORMATION AGE John C. B. LeGates WHAT IS THIS DOCUMENT? In 1997 I was approached by a writer for The New Yorker magazine, who asked if they could do a "life and times" article about me. It would be the feature article in one of their issues - a minimum of twenty pages. Alternatively it might be longer, and be serialized over several issues. -
Computer Network
Computer network A computer network or data network is a telecommunications network that allows computers to exchange data. The connections (network links) between networked computing devices (network nodes) are established using either cable media or wireless media. The best-known computer network is the Internet. Network devices that originate, route and terminate the data are called network nodes. Nodes can include hosts such as servers and personal computers, as well as networking hardware. Two devices are said to be networked when a process in one device is able to exchange information with a process in another device. Computer networks support applications such as access to the World Wide Web, shared use of application and storage servers, printers, and fax machines, and use of email and instant messaging applications. The remainder of this article discusses local area network technologies and classifies them according to the following characteristics: the physical media used to transmit signals, the communications protocols used to organize network traffic, along with the network's size, its topology and its organizational intent. History In the late 1950s, early networks of communicating computers included the military radar system Semi- Automatic Ground Environment (SAGE). In 1960, the commercial airline reservation system semi-automatic business research environment (SABRE) went online with two connected mainframes. In 1962, J.C.R. Licklider developed a working group he called the "Intergalactic Computer Network", a precursor to the ARPANET, at the Advanced Research Projects Agency (ARPA). In 1964, researchers at Dartmouth developed the Dartmouth Time Sharing System for distributed users of large computer systems. The same year, at Massachusetts Institute of Technology, a research group supported by General Electric and Bell Labs used a computer to route and manage telephone connections. -
The People Who Invented the Internet Source: Wikipedia's History of the Internet
The People Who Invented the Internet Source: Wikipedia's History of the Internet PDF generated using the open source mwlib toolkit. See http://code.pediapress.com/ for more information. PDF generated at: Sat, 22 Sep 2012 02:49:54 UTC Contents Articles History of the Internet 1 Barry Appelman 26 Paul Baran 28 Vint Cerf 33 Danny Cohen (engineer) 41 David D. Clark 44 Steve Crocker 45 Donald Davies 47 Douglas Engelbart 49 Charles M. Herzfeld 56 Internet Engineering Task Force 58 Bob Kahn 61 Peter T. Kirstein 65 Leonard Kleinrock 66 John Klensin 70 J. C. R. Licklider 71 Jon Postel 77 Louis Pouzin 80 Lawrence Roberts (scientist) 81 John Romkey 84 Ivan Sutherland 85 Robert Taylor (computer scientist) 89 Ray Tomlinson 92 Oleg Vishnepolsky 94 Phil Zimmermann 96 References Article Sources and Contributors 99 Image Sources, Licenses and Contributors 102 Article Licenses License 103 History of the Internet 1 History of the Internet The history of the Internet began with the development of electronic computers in the 1950s. This began with point-to-point communication between mainframe computers and terminals, expanded to point-to-point connections between computers and then early research into packet switching. Packet switched networks such as ARPANET, Mark I at NPL in the UK, CYCLADES, Merit Network, Tymnet, and Telenet, were developed in the late 1960s and early 1970s using a variety of protocols. The ARPANET in particular led to the development of protocols for internetworking, where multiple separate networks could be joined together into a network of networks. In 1982 the Internet Protocol Suite (TCP/IP) was standardized and the concept of a world-wide network of fully interconnected TCP/IP networks called the Internet was introduced. -
From Packet Switching to the Cloud
Professor Nigel Linge FROM PACKET SWITCHING TO THE CLOUD Telecommunication engineers have always drawn a picture of a cloud to represent a network. Today, however, the cloud has taken on a new meaning, where IT becomes a utility, accessed and used in exactly the same on-demand way as we connect to the National Grid for electricity. Yet, only 50 years ago, this vision of universal access to an all- encompassing and powerful network would have been seen as nothing more than fanciful science fiction. he first electronic, digital, network - a figure that represented a concept of packet switching in which stored-program computer 230% increase on the previous year. data is assembled into a short se- was built in 1948 and This clear and growing demand for quence of data bits (a packet) which heralded the dawning of data services resulted in the GPO com- includes an address to tell the network a new age. missioning in July 1970 an experi- where the data is to be sent, error de- T mental, manual call-set-up, data net- tection to allow the receiver to confirm DATA COMMUNICATIONS 1 work that used modems operating at that the contents of the packet are cor- These early computers were large, 48,000bit/s (48kbit/s). rect and a source address to facilitate cumbersome and expensive machines However, computer communica- a reply. and inevitably a need arose for a com- tions is different to voice communi- Since each packet is self-contained, munication system that would allow cations not only in its form but also any number of them can be transmit- shared remote access to them. -
Ethernet: an Engineering Paradigm
Ethernet: An Engineering Paradigm Mark Huang Eden Miller Peter Sun Charles Oji 6.933J/STS.420J Structure, Practice, and Innovation in EE/CS Fall 1998 1.0 Acknowledgements 1 2.0 A Model for Engineering 1 2.1 The Engineering Paradigm 3 2.1.1 Concept 5 2.1.2 Standard 6 2.1.3 Implementation 6 3.0 Phase I: Conceptualization and Early Implementation 7 3.1 Historical Framework: Definition of the Old Paradigm 7 3.1.1 Time-sharing 8 3.1.2 WANs: ARPAnet and ALOHAnet 8 3.2 Anomalies: Definition of the Crisis 10 3.2.1 From Mainframes to Minicomputers: A Parallel Paradigm Shift 10 3.2.2 From WAN to LAN 11 3.2.3 Xerox: From Xerography to Office Automation 11 3.2.4 Metcalfe and Boggs: Professional Crisis 12 3.3 Ethernet: The New Paradigm 13 3.3.1 Invention Background 14 3.3.2 Basic Technical Description 15 3.3.3 How Ethernet Addresses the Crisis 15 4.0 Phase II: Standardization 17 4.1 Crisis II: Building Vendor Support (1978-1983) 17 4.1.1 Forming the DIX Consortium 18 4.1.2 Within DEC 19 4.1.3 Within Intel 22 4.1.4 The Marketplace 23 4.2 Crisis III: Establishing Widespread Compatibility (1979-1984) 25 4.3 The Committee 26 5.0 Implementation and the Crisis of Domination 28 5.1 The Game of Growth 28 5.2 The Grindley Effect in Action 28 5.3 The Rise of 3Com, a Networking Giant 29 6.0 Conclusion 30 A.0 References A-1 i of ii ii of ii December 11, 1998 Ethernet: An Engineering Paradigm Mark Huang Eden Miller Charles Oji Peter Sun 6.933J/STS.420J Structure, Practice, and Innovation in EE/CS Fall 1998 1.0 Acknowledgements The authors would like to thank the following individuals for contributing to this project. -
A Memorable Trip Abhisekh Sankaran Research Scholar, IIT Bombay
A Memorable Trip Abhisekh Sankaran Research Scholar, IIT Bombay It was my first trip to the US. It had not yet sunk in that I had been chosen by ACM India as one of two Ph.D. students from India to attend the big ACM Turing Centenary Celebration in San Francisco until I saw the familiar face of Stephen Cook enter a room in the hotel a short distance from mine; later, Moshe Vardi recognized me from his trip to IITB during FSTTCS, 2011. I recognized Nitin Saurabh from IMSc Chennai, the other student chosen by ACM-India; 11 ACM SIG©s had sponsored students and there were about 75 from all over the world. Registration started at 8am on 15th June, along with breakfast. Collecting my ©Student Scholar© badge and stuffing in some food, I entered a large hall with several hundred seats, a brightly lit podium with a large screen in the middle flanked by two others. The program began with a video giving a brief biography of Alan Turing from his boyhood to the dynamic young man who was to change the world forever. There were inaugural speeches by John White, CEO of ACM, and Vint Cerf, the 2004 Turing Award winner and incoming ACM President. The MC for the event, Paul Saffo, took over and the panel discussions and speeches commenced. A live Twitter feed made it possible for people in the audience and elsewhere to post questions/comments which were actually taken up in the discussions. Of the many sessions that took place in the next two days, I will describe three that I found most interesting. -
Desktop Publishing Pioneer Meeting: Day 1 Session 4 - Technology in the 1980S
Desktop Publishing Pioneer Meeting: Day 1 Session 4 - Technology in the 1980s Moderators by: Burt Grad David C. Brock Editor: Cheryl Baltes Recorded May 22, 2017 Mountain View, CA CHM Reference number: X8209.2017 © 2017 Computer History Museum Table of Contents TEX TECHNOLOGY .................................................................................................................. 5 FRAMEMAKER TECHNOLOGY ................................................................................................ 7 EARLY POSTSCRIPT DEVELOPMENT EFFORTS .................................................................11 POSTSCRIPT AND FONT TECHNOLOGY ..............................................................................12 COMMERCIAL POSTSCRIPT ..................................................................................................15 POSTSCRIPT VS. OTHER APPROACHES .............................................................................20 POSTSCRIPT, APPLE, AND ADOBE .......................................................................................22 HALF TONING AND POSTSCRIPT ..........................................................................................24 ADOBE ILLUSTRATOR TECHNOLOGY ..................................................................................25 LASERWRITER TECHNOLOGY ..............................................................................................26 FONT SELECTION ...................................................................................................................27