Understanding_Cryptography_Chptr_1---Intro_to_Crypto + Historical_Ciphers

Understanding_Cryptography_Chptr_1---Intro_to_Crypto + Historical_Ciphers

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Understanding Cryptography – A Textbook for Students and Practitioners by Christof Paar and Jan Pelzl www.crypto-textbook.com Chapter 1 – Introduction to Cryptography ver. October 28, 2010 These slides were prepared by Christof Paar and Jan Pelzl
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2/36 Chapter 1 of Understanding Cryptography by Christof Paar and Jan Pelzl Some legal stuff (sorry): Terms of Use The slides can used free of charge. All copyrights for the slides remain with Christof Paar and Jan Pelzl. The title of the accompanying book “Understanding Cryptography” by Springer and the author’s names must remain on each slide. If the slides are modified, appropriate credits to the book authors and the book title must remain within the slides. It is not permitted to reproduce parts or all of the slides in printed form whatsoever without written consent by the authors.
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3/36 Chapter 1 of Understanding Cryptography by Christof Paar and Jan Pelzl Content of this Chapter Overview on the field of cryptology Basics of symmetric cryptography Cryptanalysis Substitution Cipher Modular arithmetic Shift (or Caesar) Cipher and Affine Cipher
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4/36 Chapter 1 of Understanding Cryptography by Christof Paar and Jan Pelzl Content of this Chapter Overview on the field of cryptology Basics of symmetric cryptography Cryptanalysis Substitution Cipher Modular arithmetic Shift (or Caesar) Cipher and Affine Cipher
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5/36 Chapter 1 of Understanding Cryptography by Christof Paar and Jan Pelzl U Further Reading and Information Addition to Understanding Cryptography . A.Menezes, P. van Oorschot, S. Vanstone, Handbook of Applied Cryptography . CRC Press, October 1996. H.v.Tilborg (ed.), Encyclopedia of Cryptography and Security , Springer, 2005 History of Cryptography (great bedtime reading) S. Singh, The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography, Anchor, 2000. D. Kahn, The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet . 2nd edition, Scribner, 1996. Software (excellent demonstration of many ancient and modern ciphers) Cryptool, http://www.cryptool.de
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6/36 Chapter 1 of Understanding Cryptography by Christof Paar and Jan Pelzl U Classification of the Field of Cryptology Cryptology Cryptography Cryptanalysis Symmetric Ciphers Asymmetric Ciphers Protocols Block Ciphers Stream Ciphers
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7/36 Chapter 1 of Understanding Cryptography by Christof Paar and Jan Pelzl U Some Basic Facts Ancient Crypto: Early signs of encryption in Eqypt in ca. 2000 B.C. Letter-based encryption schemes (e.g., Caesar cipher) popular ever since. Symmetric ciphers: All encryption schemes from ancient times until 1976 were symmetric ones. Asymmetric ciphers:
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Understanding_Cryptography_Chptr_1---Intro_to_Crypto + Historical_Ciphers

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