Visuelle Kryptographie
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Visuelle Kryptographie
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Author : Andreas Klein
language : de
Publisher: Springer-Verlag
Release Date : 2007-08-23
Visuelle Kryptographie written by Andreas Klein and has been published by Springer-Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-23 with Mathematics categories.
Mit Erfindung der Schrift entstand gleichzeitig der Bedarf, Geschriebenes vor unbefugten Lesern zu verbergen. Als Wissenschaft im modernen Sinne ist die Kryptographie jedoch noch sehr jung. 1994 erfanden Naor und Shamir folgendes Verfahren: Sie verteilten ein Bild so auf zwei Folien, dass auf jeder einzelnen Folie nur ein zufälliges Punktmuster zu sehen ist, aber beide Folien übereinander gelegt ein geheimes Bild ergeben. Das Buch gibt einen Einblick in die aktuelle Forschung, verzichtet aber bewusst auf Höhere Mathematik. Daher eine ideale Grundlage für Proseminare und Mathematik-AGs der Sekundarstufe. Plus: Aufgaben mit Musterlösungen.
Farbige Visuelle Kryptographie
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Author : Andreas Klein
language : en
Publisher:
Release Date : 2001
Farbige Visuelle Kryptographie written by Andreas Klein and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Authentication In Insecure Environments
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Author : Sebastian Pape
language : en
Publisher: Springer
Release Date : 2014-09-02
Authentication In Insecure Environments written by Sebastian Pape and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-02 with Computers categories.
Sebastian Pape discusses two different scenarios for authentication. On the one hand, users cannot trust their devices and nevertheless want to be able to do secure authentication. On the other hand, users may not want to be tracked while their service provider does not want them to share their credentials. Many users may not be able to determine whether their device is trustworthy, i.e. it might contain malware. One solution is to use visual cryptography for authentication. The author generalizes this concept to human decipherable encryption schemes and establishes a relationship to CAPTCHAS. He proposes a new security model and presents the first visual encryption scheme which makes use of noise to complicate the adversary's task. To prevent service providers from keeping their users under surveillance, anonymous credentials may be used. However, sometimes it is desirable to prevent the users from sharing their credentials. The author compares existing approaches based on non-transferable anonymous credentials and proposes an approach which combines biometrics and smartcards.
Visual Cryptography And Secret Image Sharing
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Author : Stelvio Cimato
language : en
Publisher: CRC Press
Release Date : 2017-12-19
Visual Cryptography And Secret Image Sharing written by Stelvio Cimato and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-19 with Computers categories.
With rapid progress in Internet and digital imaging technology, there are more and more ways to easily create, publish, and distribute images. Considered the first book to focus on the relationship between digital imaging and privacy protection, Visual Cryptography and Secret Image Sharing is a complete introduction to novel security methods and sharing-control mechanisms used to protect against unauthorized data access and secure dissemination of sensitive information. Image data protection and image-based authentication techniques offer efficient solutions for controlling how private data and images are made available only to select people. Essential to the design of systems used to manage images that contain sensitive data—such as medical records, financial transactions, and electronic voting systems—the methods presented in this book are useful to counter traditional encryption techniques, which do not scale well and are less efficient when applied directly to image files. An exploration of the most prominent topics in digital imaging security, this book discusses: Potential for sharing multiple secrets Visual cryptography schemes—based either on the probabilistic reconstruction of the secret image, or on different logical operations for combining shared images Inclusion of pictures in the distributed shares Contrast enhancement techniques Color-image visual cryptography Cheating prevention Alignment problems for image shares Steganography and authentication In the continually evolving world of secure image sharing, a growing number of people are becoming involved as new applications and business models are being developed all the time. This contributed volume gives academicians, researchers, and professionals the insight of well-known experts on key concepts, issues, trends, and technologies in this emerging field.
Encyclopedia Of Image Processing
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Author : Phillip A. Laplante
language : en
Publisher: CRC Press
Release Date : 2018-11-08
Encyclopedia Of Image Processing written by Phillip A. Laplante and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-08 with Technology & Engineering categories.
The Encyclopedia of Image Processing presents a vast collection of well-written articles covering image processing fundamentals (e.g. color theory, fuzzy sets, cryptography) and applications (e.g. geographic information systems, traffic analysis, forgery detection). Image processing advances have enabled many applications in healthcare, avionics, robotics, natural resource discovery, and defense, which makes this text a key asset for both academic and industrial libraries and applied scientists and engineers working in any field that utilizes image processing. Written by experts from both academia and industry, it is structured using the ACM Computing Classification System (CCS) first published in 1988, but most recently updated in 2012.
Visuelle Kryptographie
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Author : Michaela Bachmann
language : de
Publisher:
Release Date : 2005
Visuelle Kryptographie written by Michaela Bachmann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Visuelle Kryptographie
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Author : Jan Wolf
language : de
Publisher:
Release Date : 2010
Visuelle Kryptographie written by Jan Wolf and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Kryptologie Kompendium
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Author : Schöning, Uwe
language : de
Publisher: Lehmanns Media
Release Date : 2012
Kryptologie Kompendium written by Schöning, Uwe and has been published by Lehmanns Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Cryptography categories.
Das Kompendium – im Rahmen einer Vorlesung an der Universität Ulm entstanden – ist kein Vorlesungsskript im eigentlichen Sinne: Das heißt, man findet hier nicht den Ablauf der Vorlesung chronologisch wiedergegeben. Vielmehr war es die Intention des Autors, in diesem Kompendium die wesentlichen Begriffe, Definitionen und Sätze aus dem Kontext der Kryptologie vorzufinden – angeordnet nach Sachgebieten wie Komplexitätstheorie, Informationstheorie, Zahlentheorie sowie den entsprechenden kryptographischen Algorithmen und Protokollen. Und das alles in kompakter Form.
Diskrete Mathematik F R Einsteiger
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Author : Albrecht Beutelspacher
language : de
Publisher: Springer-Verlag
Release Date : 2013-03-09
Diskrete Mathematik F R Einsteiger written by Albrecht Beutelspacher and has been published by Springer-Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Mathematics categories.
Diskrete Mathematik ist ein relativ junges Gebiet der Mathematik, das in einzigartiger Weise so genannte "reine Mathematik" mit "Anwendungen" verbindet. Im Gegensatz zu solchen Teilgebieten der Mathematik, die sich mit kontinuierlichen, "stetigen" Phänomenen beschäftigen, wie z.B. die Analysis, ist es eine Herausforderung der diskreten Mathematik, Modelle zum Verständnis und zur Beherrschung von endlichen, eventuell allerdings sehr großen Phänomenen und Strukturen zu entwickeln. Eine Hauptaufgabe liegt in der Berechnung von Objekten; es werden Formeln und Algorithmen behandelt. Insofern sind die Übergänge zur Informatik fließend.
Studien Zur Alt Gyptischen Kultur Band 32
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Author : Hartwig Altenmüller
language : de
Publisher: Helmut Buske Verlag
Release Date : 2004-01-01
Studien Zur Alt Gyptischen Kultur Band 32 written by Hartwig Altenmüller and has been published by Helmut Buske Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-01-01 with History categories.
M. ABDELRAHIEM, The Inscriptions of the Alabaster Sanctuary of Osiris (Temple of Ramesses II at Abydos) H. ALTENMÜLLER, Der Konvoi der Sonnenschiffe in den Pyramidentexten N. BILLING, Writing an Image – The Formulation of the Tree Goddess Motif in the Book of the Dead, Ch. 59 A. BRAWANSKI, Die Wirbelsäulenverletzungen des Papyrus Edwin Smith (Fall 29–33) V. G. CALLENDER, Queen Tausret and the End of Dynasty 19 M. COENEN, The Documents of Breathing in the Royal Museum of Edinburgh M. FITZENREITER, Richtungsbezüge in ägyptischen Sakralanlagen oder: Warum im ägyptischen Tempel das Sanktuar hinten links in der Ecke liegt (Teil II) CH. GEISEN, Zur zeitlichen Einordnung des Königs Djehuti an das Ende der 13. Dynastie F.-R. HERBIN, Un texte de glorification K. JANSEN-WINKELN, Sprachliche Bemerkungen zu den ""Unterweltsbüchern"" M. EL-KHADRAGY / J. KAHL in collaboration with E.-M. ENGEL, The First Intermediate Period Tombs at Asyut Revisited N. KLOTH, Zur Überlieferung (auto-)biographischer Inschriften im Alten Reich K. KONRAD, Der Ptah des Amenemhet: Zur theologischen Konzeption einer Kniefigur am Opferbecken R. KRAUSS: August Böckh (1785–1867) und andere Autoren über den Beginn des ägyptischen Kalendertages nach Ptolemäus im Almagest S. L. LIPPERT / M. SCHENTULEIT: Ein Webstuhl mit Zubehör: Die spätdemotische Urkunde P. Berlin P 23779+30009 A. MANISALI: ""Imitate but innovate"" oder: Eine Götterbedrohung mit hymnischer Struktur im Papyrus Genf MAH 15274 L. D. MORENZ: Visuelle Poesie als eine sakrale Zeichen-Kunst der altägyptischen hohen Kultur J. F. QUACK: Der pränatale Geschlechtsverkehr von Isis und Osiris sowie eine Notiz zum Alter des Osiris G. ROSATI: A Group of Middle Kingdom Stelae from El Rizeiqat/El Gebelein H. SELIM: Three Unpublished Late Period Statues u.a.m.