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Basic Cryptography
Basic cryptography • How cryptography works... • Symmetric cryptography... • Public key cryptography... • Online Resources... • Printed Resources... I VP R 1 © Copyright 2002-2007 Haim Levkowitz How cryptography works • Plaintext • Ciphertext • Cryptographic algorithm • Key Decryption Key Algorithm Plaintext Ciphertext Encryption I VP R 2 © Copyright 2002-2007 Haim Levkowitz Simple cryptosystem ... ! ABCDEFGHIJKLMNOPQRSTUVWXYZ ! DEFGHIJKLMNOPQRSTUVWXYZABC • Caesar Cipher • Simple substitution cipher • ROT-13 • rotate by half the alphabet • A => N B => O I VP R 3 © Copyright 2002-2007 Haim Levkowitz Keys cryptosystems … • keys and keyspace ... • secret-key and public-key ... • key management ... • strength of key systems ... I VP R 4 © Copyright 2002-2007 Haim Levkowitz Keys and keyspace … • ROT: key is N • Brute force: 25 values of N • IDEA (international data encryption algorithm) in PGP: 2128 numeric keys • 1 billion keys / sec ==> >10,781,000,000,000,000,000,000 years I VP R 5 © Copyright 2002-2007 Haim Levkowitz Symmetric cryptography • DES • Triple DES, DESX, GDES, RDES • RC2, RC4, RC5 • IDEA Key • Blowfish Plaintext Encryption Ciphertext Decryption Plaintext Sender Recipient I VP R 6 © Copyright 2002-2007 Haim Levkowitz DES • Data Encryption Standard • US NIST (‘70s) • 56-bit key • Good then • Not enough now (cracked June 1997) • Discrete blocks of 64 bits • Often w/ CBC (cipherblock chaining) • Each blocks encr. depends on contents of previous => detect missing block I VP R 7 © Copyright 2002-2007 Haim Levkowitz Triple DES, DESX, -
Trinity Iot Product Catalogue
IoT Devices TRINITY IOT PRODUCT CATALOGUE Teltonika Device Range 2021 TABLE OF CONTENTS 1 RUT950 27 TRB142 3 RUT955 29 TRB145 5 RUTX09 31 RUTX10 7 RUTX11 33 RUTX12 9 TRB141 35 RUTX08 11 RUT230 37 TRB255 13 RUT240 39 FMB920 15 RUT850 41 RUTXR1 17 RUT900 43 FM130 19 GH5200 45 BLUE SLIM ID 21 TRB245 47 BLUE COIN MAG 23 TSW100 49 BLUE COIN T 25 TRB140 PRODUCT SHEET / RUT950 ROUTER INTRODUCING RUT950 TRINITY APPROVED & SMART™ COMPATIBLE RUT950 is a highly reliable and secure LTE router for professional applications. Router delivers high performance, mission-critical cellular communication. RUT950 is equipped with connectivity redundancy through dual SIM failover. External antenna connectors make it possible to attach desired antennas and to easily find the best signal location. LTE LTE Cat4 Cat4 LTE Cat 4 with Dual SIM – significantly speeds up to 150 Mps reduce roaming costs WANLTE 4 LTEX failoverCat4 Cat4 Automatic switch to available 4x Ethernet ports backup connection with VLAN functionality LTE LTE Cat4 Cat4 Wireless Access Point Linux Powered with Hotspot functionality Simply order, and we’ll take care of the rest Source Import Test ICASA Management Onboarding 24/7 Platform Support www.trinity.co.za 1 PRODUCT SHEET / RUT950 ROUTER LAN Ethernet Ports WAN Ethernet Ports LTE antenna connectors Power socket WiFi antenna SIM card connectors slots Hardware Weight 256 g CPU Atheros Wasp, MIPS 74Kc, 550 MHz Memory 16 MBytes Flash, 128 MBytes DDR2 RAM Ethernet 4 x 10/100 Ethernet ports: 1 x WAN (configurable as LAN), 3 x LAN ports Power supply 9 -
Fish-Stream Identification Guidebook
of BRITISH COLUMBIA Fish-stream Identification Guidebook Second edition Version 2.1 August 1998 BC Environment Fish-stream Identification Guidebook of BRITISH COLUMBIA Fish-stream Identification Guidebook Second edition Version 2.1 August 1998 Authority Forest Practices Code of British Columbia Act Operational Planning Regulation Canadian Cataloguing in Publication Data Main entry under title: Fish-stream identification guidebook. – 2nd ed. (Forest practices code of British Columbia) ISBN 0-7726-3664-8 1. Fishes – Habitat – British Columbia. 2. River surveys – British Columbia. 3. Forest management – British Columbia. 4. Riparian forests – British Columbia – Management. I. British Columbia. Ministry of Forests. SH177.L63F58 1998 634.9 C98-960250-8 Fish-stream Identification Guidebook Preface This guidebook has been prepared to help forest resource managers plan, prescribe and implement sound forest practices that comply with the Forest Practices Code. Guidebooks are one of the four components of the Forest Practices Code. The others are the Forest Practices Code of British Columbia Act, the regulations, and the standards. The Forest Practices Code of British Columbia Act is the legislative umbrella authorizing the Code’s other components. It enables the Code, establishes mandatory requirements for planning and forest practices, sets enforcement and penalty provisions, and specifies administrative arrangements. The regulations lay out the forest practices that apply province-wide. The chief forester may establish standards, where required, to expand on a regulation. Both regulations and standards are mandatory requirements under the Code. Forest Practices Code guidebooks have been developed to support the regulations, however, only those portions of guidebooks cited in regulation are part of the legislation. -
Time and Frequency Users' Manual
,>'.)*• r>rJfl HKra mitt* >\ « i If I * I IT I . Ip I * .aference nbs Publi- cations / % ^m \ NBS TECHNICAL NOTE 695 U.S. DEPARTMENT OF COMMERCE/National Bureau of Standards Time and Frequency Users' Manual 100 .U5753 No. 695 1977 NATIONAL BUREAU OF STANDARDS 1 The National Bureau of Standards was established by an act of Congress March 3, 1901. The Bureau's overall goal is to strengthen and advance the Nation's science and technology and facilitate their effective application for public benefit To this end, the Bureau conducts research and provides: (1) a basis for the Nation's physical measurement system, (2) scientific and technological services for industry and government, a technical (3) basis for equity in trade, and (4) technical services to pro- mote public safety. The Bureau consists of the Institute for Basic Standards, the Institute for Materials Research the Institute for Applied Technology, the Institute for Computer Sciences and Technology, the Office for Information Programs, and the Office of Experimental Technology Incentives Program. THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consist- ent system of physical measurement; coordinates that system with measurement systems of other nations; and furnishes essen- tial services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce. The Institute consists of the Office of Measurement Services, and the following center and divisions: Applied Mathematics -
Rotational Cryptanalysis of ARX
Rotational Cryptanalysis of ARX Dmitry Khovratovich and Ivica Nikoli´c University of Luxembourg [email protected], [email protected] Abstract. In this paper we analyze the security of systems based on modular additions, rotations, and XORs (ARX systems). We provide both theoretical support for their security and practical cryptanalysis of real ARX primitives. We use a technique called rotational cryptanalysis, that is universal for the ARX systems and is quite efficient. We illustrate the method with the best known attack on reduced versions of the block cipher Threefish (the core of Skein). Additionally, we prove that ARX with constants are functionally complete, i.e. any function can be realized with these operations. Keywords: ARX, cryptanalysis, rotational cryptanalysis. 1 Introduction A huge number of symmetric primitives using modular additions, bitwise XORs, and intraword rotations have appeared in the last 20 years. The most famous are the hash functions from MD-family (MD4, MD5) and their descendants SHA-x. While modular addition is often approximated with XOR, for random inputs these operations are quite different. Addition provides diffusion and nonlinearity, while XOR does not. Although the diffusion is relatively slow, it is compensated by a low price of addition in both software and hardware, so primitives with relatively high number of additions (tens per byte) are still fast. The intraword rotation removes disbalance between left and right bits (introduced by the ad- dition) and speeds up the diffusion. Many recently design primitives use only XOR, addition, and rotation so they are grouped into a single family ARX (Addition-Rotation-XOR). -
The Impact of the Speed of Light on Financial Markets and Their Regulation
When Finance Meets Physics: The Impact of the Speed of Light on Financial Markets and their Regulation by James J. Angel, Ph.D., CFA Associate Professor of Finance McDonough School of Business Georgetown University 509 Hariri Building Washington DC 20057 USA 1.202.687.3765 [email protected] The Financial Review, Forthcoming, May 2014 · Volume 49 · No. 2 Abstract: Modern physics has demonstrated that matter behaves very differently as it approaches the speed of light. This paper explores the implications of modern physics to the operation and regulation of financial markets. Information cannot move faster than the speed of light. The geographic separation of market centers means that relativistic considerations need to be taken into account in the regulation of markets. Observers in different locations may simultaneously observe different “best” prices. Regulators may not be able to determine which transactions occurred first, leading to problems with best execution and trade- through rules. Catastrophic software glitches can quantum tunnel through seemingly impregnable quality control procedures. Keywords: Relativity, Financial Markets, Regulation, High frequency trading, Latency, Best execution JEL Classification: G180 The author is also on the board of directors of the Direct Edge stock exchanges (EDGX and EDGA). I wish to thank the editor and referee for extremely helpful comments and suggestions. I also wish to thank the U.K. Foresight Project, for providing financial support for an earlier version of this paper. All opinions are strictly my own and do not necessarily represent those of Georgetown University, Direct Edge, the U.K. Foresight Project, The Financial Review, or anyone else for that matter. -
Technical Proposal for One Day Workshop on Fog and Edge
1 Technical Proposal for One Day Workshop on Fog and Edge Computing for Beyond IoT Services and Opportunities IEEE 7th World Forum on Internet of Things New Orleans, Louisiana, USA Workshop Title: Fog and Edge Computing for 6G Networks/IoT Services and Opportunities 1. Preamble As we evolve toward the Internet of Things (IoT), our 5G/6G and future mobile networks must support a much wider range of applications, including vehicular networking, automated man- ufacturing, smart cities, drones, smart grids, e-health, and the many emerging AI-enabled applications such as Virtual Reality (VR) and Augmented Reality (AR). The cloud computing plus communication pipe model is no longer adequate for supporting these emerging appli- cations. Connecting every device directly to the cloud can often be impractical due to factors such as limited resources on the devices, software and management complexity, limited net- work agility and cognition, and system scalability. In such scenarios, users will desire local services. Future mobile networks will also require computing capabilities inside or close to the radio access networks (RANs) to enable advanced networking capabilities, such as estab- lishing radio connections more timely and adjusting radio channel coding dynamically in re- sponse to changing user needs and communication environments, and allow user applica- tions to be hosted in the RANs that are closer to the users. These and the many other new requirements call for a new computing paradigm – fog/edge computing and networking. Fog/Edge envisions an open and standards-based horizontal ar- chitecture for distributing functions (from computing to storage to control and to networking functions) closer to users, not just to any specific type of network edge device but anywhere along the cloud-to-thing continuum that can best meet user requirements. -
Using Microsecond Single-Molecule FRET to Determine the Assembly
Using microsecond single-molecule FRET to determine PNAS PLUS the assembly pathways of T4 ssDNA binding protein onto model DNA replication forks Carey Phelpsa,b,1, Brett Israelsa,b, Davis Josea, Morgan C. Marsha,b, Peter H. von Hippela,2, and Andrew H. Marcusa,b,2 aDepartment of Chemistry and Biochemistry, Institute of Molecular Biology, University of Oregon, Eugene, OR 97403; and bDepartment of Chemistry and Biochemistry, Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, Eugene, OR 97403 Edited by Stephen C. Kowalczykowski, University of California, Davis, CA, and approved March 20, 2017 (received for review December 2, 2016) DNA replication is a core biological process that occurs in pro- complete coverage of the exposed ssDNA templates at the precisely karyotic cells at high speeds (∼1 nucleotide residue added per regulated concentration of protein that needs to be maintained in millisecond) and with high fidelity (fewer than one misincorpora- the infected Escherichia coli cell (8, 9). The gp32 protein has an tion event per 107 nucleotide additions). The ssDNA binding pro- N-terminal domain, a C-terminal domain, and a core domain. tein [gene product 32 (gp32)] of the T4 bacteriophage is a central The N-terminal domain is necessary for the cooperative binding integrating component of the replication complex that must con- of the gp32 protein through its interactions with the core domain of tinuously bind to and unbind from transiently exposed template an adjacent gp32 protein. To bind to ssDNA, the C-terminal domain strands during DNA synthesis. We here report microsecond single- of the gp32 protein must undergo a conformational change that molecule FRET (smFRET) measurements on Cy3/Cy5-labeled primer- exposes the positively charged region of its core domain, which in template (p/t) DNA constructs in the presence of gp32. -
Aquatic Primary Productivity Field Protocols for Satellite Validation and Model Synthesis (DRAFT)
Ocean Optics & Biogeochemistry Protocols for Satellite Ocean Colour Sensor Validation IOCCG Protocol Series Volume 7.0, 2021 Aquatic Primary Productivity Field Protocols for Satellite Validation and Model Synthesis (DRAFT) Report of a NASA-sponsored workshop with contributions (alphabetical) from: William M. Balch Bigelow Laboratory for Ocean Sciences, Maine, USA Magdalena M. Carranza Monterey Bay Aquarium Research Institute, California, USA Ivona Cetinic University Space Research Association, NASA Goddard Space Flight Center, Maryland, USA Joaquín E. Chaves Science Systems and Applications, Inc., NASA Goddard Space Flight Center, Maryland, USA Solange Duhamel University of Arizona, Arizona, USA Zachary K. Erickson University Space Research Association, NASA Goddard Space Flight Center, Maryland, USA Andrea J. Fassbender NOAA Pacific Marine Environmental Laboratory, Washington, USA Ana Fernández-Carrera Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany Sara Ferrón University of Hawaii at Manoa, Hawaii, USA E. Elena García-Martín National Oceanography Centre, Southampton, UK Joaquim Goes Lamont Doherty Earth Observatory at Columbia University, New York, USA Helga do Rosario Gomes Lamont Doherty Earth Observatory at Columbia University, New York, USA Maxim Y. Gorbunov Department of Marine and Coastal Sciences, Rutgers University, New Jersey, USA Kjell Gundersen Plankton Research Group, Institute of Marine Research, Bergen, Norway Kimberly Halsey Department of Microbiology, Oregon State University, Oregon, USA Toru Hirawake -
Nanosecond X-Ray Photon Correlation Spectroscopy Using Pulse Time
research papers Nanosecond X-ray photon correlation spectroscopy IUCrJ using pulse time structure of a storage-ring source ISSN 2052-2525 NEUTRONjSYNCHROTRON Wonhyuk Jo,a Fabian Westermeier,a Rustam Rysov,a Olaf Leupold,a Florian Schulz,b,c Steffen Tober,b‡ Verena Markmann,a Michael Sprung,a Allesandro Ricci,a Torsten Laurus,a Allahgholi Aschkan,a Alexander Klyuev,a Ulrich Trunk,a Heinz Graafsma,a Gerhard Gru¨bela,c and Wojciech Rosekera* Received 25 September 2020 Accepted 2 December 2020 aDeutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany, bInstitute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany, and cThe Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany. *Correspondence e-mail: [email protected] Edited by Dr T. Ishikawa, Coherent X-ray Optics Laboratory, Harima Institute, RIKEN, Japan X-ray photon correlation spectroscopy (XPCS) is a routine technique to study slow dynamics in complex systems at storage-ring sources. Achieving ‡ Current address: Deutsches Elektronen- Synchrotron (DESY), Notkestr. 85, 22607 nanosecond time resolution with the conventional XPCS technique is, however, Hamburg, Germany. still an experimentally challenging task requiring fast detectors and sufficient photon flux. Here, the result of a nanosecond XPCS study of fast colloidal Keywords: materials science; nanoscience; dynamics is shown by employing an adaptive gain integrating pixel detector SAXS; dynamical studies; time-resolved studies; (AGIPD) operated at frame rates of the intrinsic pulse structure of the storage X-ray photon correlation spectroscopy; adaptive ring. Correlation functions from single-pulse speckle patterns with the shortest gain integrating pixel detectors; storage rings; pulse structures. -
The Mathemathics of Secrets.Pdf
THE MATHEMATICS OF SECRETS THE MATHEMATICS OF SECRETS CRYPTOGRAPHY FROM CAESAR CIPHERS TO DIGITAL ENCRYPTION JOSHUA HOLDEN PRINCETON UNIVERSITY PRESS PRINCETON AND OXFORD Copyright c 2017 by Princeton University Press Published by Princeton University Press, 41 William Street, Princeton, New Jersey 08540 In the United Kingdom: Princeton University Press, 6 Oxford Street, Woodstock, Oxfordshire OX20 1TR press.princeton.edu Jacket image courtesy of Shutterstock; design by Lorraine Betz Doneker All Rights Reserved Library of Congress Cataloging-in-Publication Data Names: Holden, Joshua, 1970– author. Title: The mathematics of secrets : cryptography from Caesar ciphers to digital encryption / Joshua Holden. Description: Princeton : Princeton University Press, [2017] | Includes bibliographical references and index. Identifiers: LCCN 2016014840 | ISBN 9780691141756 (hardcover : alk. paper) Subjects: LCSH: Cryptography—Mathematics. | Ciphers. | Computer security. Classification: LCC Z103 .H664 2017 | DDC 005.8/2—dc23 LC record available at https://lccn.loc.gov/2016014840 British Library Cataloging-in-Publication Data is available This book has been composed in Linux Libertine Printed on acid-free paper. ∞ Printed in the United States of America 13579108642 To Lana and Richard for their love and support CONTENTS Preface xi Acknowledgments xiii Introduction to Ciphers and Substitution 1 1.1 Alice and Bob and Carl and Julius: Terminology and Caesar Cipher 1 1.2 The Key to the Matter: Generalizing the Caesar Cipher 4 1.3 Multiplicative Ciphers 6 -
Edge Computing in the Context of Open Manufacturing
Edge Computing in the Context of Open Manufacturing 01.07.2021 LEGAL DISCLAIMERS © 2021 Joint Development Foundation Projects, LLC, OMP Series and its contributors. All rights reserved. THESE MATERIALS ARE PROVIDED ”AS IS.” The parties expressly disclaim any warranties (express, implied, or otherwise), including implied warranties of merchantability, non- infringement, fitness for a particular purpose, or title, related tothe materials. The entire risk as to implementing or otherwise using the materials is assumed by the implementer and user. IN NO EVENT WILL THE PARTIES BE LIABLE TO ANY OTHER PARTY FOR LOST PROFITS OR ANY FORM OF INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY CHARACTER FROM ANY CAUSES OF ACTION OF ANY KIND WITH RESPECT TO THIS DELIVERABLE OR ITS GOVERNING AGREEMENT, WHETHER BASED ON BREACH OF CONTRACT, TORT (INCLUDING NEGLIGENCE), OR OTHERWISE, AND WHETHER OR NOT THE OTHER MEMBER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2 ACKNOWLEDGMENTS This document is a work product of the Open Manufacturing Platform – IoT Connectivity Working Group, chaired by Sebastian Buckel (BMW Group) and co-chaired by Dr. Veit Hammerstingl (BMW Group). AUTHORS Anhalt, Christopher, Dr. (Softing) Buckel, Sebastian (BMW Group) Hammerstingl, Veit, Dr. (BMW Group) Köpke, Alexander (Microsoft) Müller, Michael (Capgemini) Muth, Manfred (Red Hat) Ridl, Jethro (Reply) Rummel, Thomas (Softing) Weber Martins, Thiago, Dr. (SAP) FURTHER CONTRIBUTION BY Attrey, Kapil (Cognizant) Kramer, Michael (ZF) Krapp, Chiara (BMW Group) Krebs, Jeremy (Microsoft) McGrath, Daniel (Cognizant) Title Image by Possessed Photography from unsplash.com 3 Contents Contents 1 Introduction: The Importance of Edge Computing 5 2 Definition of Edge Computing 6 3 Reference Use Case 6 4 Views on Edge Computing 8 4.1 Infrastructural View .