NLU Meghalaya Library

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Implementing cryptography using Python /

Bray, Shannon, 1972-

Implementing cryptography using Python / Shannon W. Bray. - Indianapolis : Wiley, 2020. - 1 online resource

Includes index.

Cover -- Title Page -- Copyright Page -- About the Author -- Acknowledgments -- Contents at a Glance -- Contents -- Introduction -- Chapter 1 Introduction to Cryptography and Python -- Exploring Algorithms -- Why Use Python? -- Downloading and Installing Python -- Installing on Ubuntu -- Installing on macOS -- Installing on Windows -- Installing on a Chromebook -- Installing Additional Packages -- Installing Pip, NumPy, and Matplotlib -- Installing the Cryptography Package -- Installing Additional Packages -- Testing Your Install -- Diving into Python Basics -- Using Variables Using Strings -- Introducing Operators -- Understanding Arithmetic Operators -- Understanding Comparison Operators -- Understanding Logical Operators -- Understanding Assignment Operators -- Understanding Bitwise Operators -- Understanding Membership Operators -- Understanding Identity Operators -- Using Conditionals -- Using Loops -- for -- while -- continue -- break -- else -- Using Files -- Understanding Python Semantics -- Sequence Types -- Introducing Custom Functions -- Downloading Files Using Python -- Introducing Python Modules -- Creating a Reverse Cipher -- Summary Chapter 2 Cryptographic Protocols and Perfect Secrecy -- The Study of Cryptology -- Understanding Cryptography -- Cryptography's Famous Family: Alice and Bob -- Diffie-Hellman -- Data Origin Authentication -- Entity Authentication -- Symmetric Algorithms -- Asymmetric Algorithms -- The Needham-Schroeder Protocols -- The Otway-Rees Protocol -- Kerberos -- Multiple-Domain Kerberos -- X.509 -- Formal Validation of Cryptographic Protocols -- Configuring Your First Cryptographic Library -- Understanding Cryptanalysis -- Brute-Force Attacks -- Side-Channel Attacks -- Social Engineering Analytical Attacks -- Frequency Analysis -- Attack Models -- Shannon's Theorem -- One-Time Pad -- XOR, AND, and OR -- One-Time Pad Function -- One-Way Hashes -- Cryptographic One-Way Hashes -- Message Authentication Codes -- Perfect Forward Secrecy -- Published and Proprietary Encryption Algorithms -- Summary -- References -- Chapter 3 Classical Cryptography -- Password Best Practices -- Password Storage -- Hashing Passwords -- Salting Passwords -- Stretching Passwords -- Password Tools -- Obfuscating Data -- ASCII Encoding -- Base64 Encoding Text -- Binary Data -- Decoding -- Historical Ciphers Scytale of Sparta -- Substitution Ciphers -- Caesar Cipher -- ROT-13 -- Atbash Cipher -- Vigen�ere Cipher -- Playfair -- Hill 2x2 -- Column Transposition -- Affine Cipher -- Summary -- Chapter 4 Cryptographic Math and Frequency Analysis -- Modular Arithmetic and the Greatest Common Devisor -- Prime Numbers -- Prime Number Theorem -- School Primality Test -- Fermat's Little Theorem -- Miller-Rabin Primality Test -- Generate Large Prime Numbers -- Basic Group Theory -- Orders of Elements -- Modular Inverses -- Fermat's Little Theorem to Find the Inverse -- Extending the GCD -- Euler's Theorem

Learn to deploy proven cryptographic tools in your applications and services Cryptography is, quite simply, what makes security and privacy in the digital world possible. Tech professionals, including programmers, IT admins, and security analysts, need to understand how cryptography works to protect users, data, and assets. Implementing Cryptography Using Python will teach you the essentials, so you can apply proven cryptographic tools to secure your applications and systems. Because this book uses Python, an easily accessible language that has become one of the standards for cryptography implementation, you'll be able to quickly learn how to secure applications and data of all kinds. In this easy-to-read guide, well-known cybersecurity expert Shannon Bray walks you through creating secure communications in public channels using public-key cryptography. You'll also explore methods of authenticating messages to ensure that they haven't been tampered with in transit. Finally, you'll learn how to use digital signatures to let others verify the messages sent through your services.-Learn how to implement proven cryptographic tools, using easy-to-understand examples written in Python -Discover the history of cryptography and understand its critical importance in today's digital communication systems -Work through real-world examples to understand the pros and cons of various authentication methods -Protect your end-users and ensure that your applications and systems are using up-to-date cryptography.

9781119612216 1119612217 9781119612223 1119612225 9781119615453 1119615453

10.1002/9781119612216 doi

64D6C8D5-B9DB-4ABF-B895-D8EB926D6397 OverDrive, Inc. http://www.overdrive.com 10495380 IEEE


Data encryption (Computer science)
Python (Computer program language)
Chiffrement (Informatique)
Python (Langage de programmation)
COMPUTERS--Security--Cryptography & Encryption.
Data encryption (Computer science)
Python (Computer program language)

QA76.9.A25

005.8/24
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