Cryptography with Python eBook

Cryptography with Python

Cryptography with Python is a meticulously crafted guide designed to empower readers with the knowledge and skills to apply cryptography using Python, one of the most accessible and widely used programming languages today. This eBook delves into the core principles of cryptography, including both symmetric and asymmetric encryption techniques, cryptographic hash functions, message authentication codes, and digital signatures. It emphasizes practical applications, providing readers with hands-on projects to implement secure systems and enhance data protection measures effectively.

The importance of this eBook extends beyond its educational value; it serves as a crucial tool for developers, cybersecurity professionals, and hobbyists keen on safeguarding digital information. Python's role as a versatile tool in developing cryptographic solutions is highlighted, showcasing its ability to offer simplicity and robust security features. The book underscores the significance of cryptography in the modern digital landscape, where data breaches and cyber threats are increasingly prevalent.

By offering a blend of theoretical knowledge and practical exercises, this eBook aims to equip its readers with a comprehensive understanding of how to utilize Python for cryptography. It's an essential resource for anyone looking to secure their digital communications, understand the mechanics behind data encryption, and develop their expertise in a field that's becoming increasingly vital in our digital age.

Here's what you'll get:

  • Reading everywhere: PDF, no DRM.
  • Tons of Cryptography codes: You'll get access to a downloadable link of 21 Python (.py) code files counting 1,000+ lines of code!
  • 30% off discount code for Ethical Hacking with Python eBook.

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You will learn the following:

  • Chapter 1 — Introduction to Cryptography: This chapter introduces cryptography, covering its journey from ancient secrets to today's digital security. You'll discover how it encrypts information, ensuring privacy and integrity in digital communications and transactions. The chapter outlines the evolution of cryptographic practices, highlighting key algorithms and the importance of keys. It briefly explores the types of cryptography: symmetric, asymmetric, and cryptographic hash functions, setting the stage for their deeper examination throughout the book.
  • Chapter 2 — Symmetric Cryptography: This chapter covers symmetric cryptography, emphasizing its use of a single key for both encryption and decryption and the importance of secure key management. Through an exploration of the encryption and decryption processes, it addresses both the advantages of speed and efficiency and the challenges of key distribution and scalability. The chapter concludes with a practical guide to implementing symmetric cryptography in Python, offering a solid foundation for securing digital communications.
  • Chapter 3 — Asymmetric Cryptography: You will learn the theory and the math behind asymmetric cryptography, and its applications, and then you will implement RSA from scratch using prime numbers. After that, you will learn to use the cryptography library in Python to implement RSA and Elliptic Curve.
  • Chapter 4 — Cryptographic Hash Functions: This chapter introduces cryptographic hash functions, essential tools for ensuring data security through irreversible, unique hash outputs from input data. It covers hash functions' core characteristics and importance in maintaining data integrity and security. The chapter reviews common hash functions like MD5, the SHA family, BLAKE2, and RIPEMD-160, highlighting their differences and applications. These functions are pivotal in various security tasks, including data integrity verification, password storage, and digital signatures. Practical guidance is provided on using Python's hashlib module for generating, benchmarking, and even cracking hashes, equipping you with the skills to apply cryptographic hashes effectively in your projects. This exploration lets you understand how cryptographic hash functions contribute to secure and reliable data verification and storage solutions.
  • Chapter 5 — Message Authentication and Digital Signatures: You will learn how to check if messages are genuine and secure using Message Authentication Codes (MACs) and Hash-Based Message Authentication Codes (HMACs), explaining their creation, verification, and importance. It then explores digital signatures, showing how they confirm a message or document's integrity and authenticity. The chapter concludes with practical Python examples for generating and verifying digital signatures, offering a snapshot of applying these concepts to enhance digital security.
  • Chapter 6 — Practical Cryptography Projects: In this chapter, you will go into hands-on cryptography projects, starting with implementing and cracking classic ciphers like the Caesar and Affine ciphers. It then guides you through creating security tools for PDF and ZIP files, including lockers and crackers, demonstrating how cryptography applies to everyday file protection and vulnerability testing. The chapter progresses to practical applications, such as building a password manager and a file encryption utility, equipping you with the tools to enhance digital security. It also introduces a hash validator for verifying data integrity. A controversial yet educational segment on constructing ransomware in Python is included, highlighting the importance of understanding cybersecurity threats. This chapter is packed with coding examples, offering a comprehensive look at applying cryptographic concepts in real-world scenarios.
  • Chapter 7  Best Practices and Security Considerations: Chapter 7 wraps up with crucial advice on cryptography, covering best practices, key management, and common pitfalls to avoid. It emphasizes the importance of secure key storage and the need to stay informed about the evolving cryptography landscape. The chapter aims to equip you with the knowledge to implement cryptographic solutions responsibly while preparing you for future developments in the field.

This eBook is for:

  • Python programmers who are interested in cryptography and/or cybersecurity.
  • Python beginners who seek to expand their knowledge in Python and information security.
  • Cryptography and cybersecurity enthusiasts who want to utilize the tools built in the eBook and apply their skills.

If you don't have experience with Python, I highly recommend you take an online course, a Python book, or even a quick YouTube playlist before buying the EBook, and you're good to go!

We'll constantly update the eBook; you'll have free access to future versions if you purchase now!

We're confident that you'll find the information in this eBook to be valuable and useful. However, if for any reason you're not satisfied with your purchase, we offer a 15-day money-back guarantee. Simply contact us within 15 days of your purchase, and we'll fully refund your money. No questions asked.

Get My Copy For $19 $13.3

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Table of Contents

  • Chapter 1: Introduction to Cryptography
    • 1.1 What is Cryptography?
    • 1.2 Importance of Cryptography
    • 1.3 Types of Cryptography
  • Chapter 2: Symmetric Cryptography
    • 2.1 Introduction to Symmetric Cryptography
      • Encryption Process
      • Decryption Process
      • Key Management
      • Advantages and Limitations
    • 2.2 Substitution Cipher
      • Encryption Process
      • Decryption Process
      • Advantages and Limitations
    • 2.3 Transposition Cipher
      • Types of Transposition Ciphers
      • Encryption Process
      • Decryption Process
      • Advantages and Limitations
    • 2.4 The Advanced Encryption Standard (AES)
      • Introduction
      • How AES Works
      • Key Features of AES
      • The Significance of AES in Modern Cryptography
    • 2.5 Implementing Symmetric Cryptography in Python
      • Getting Started
      • Generating the Key and Performing Encryption
      • Decrypting the Message
      • Running the Code
    • 2.6 Chapter Wrap-up
  • Chapter 3: Asymmetric Cryptography
    • 3.1 Introduction to Asymmetric Cryptography
      • Characters Revisited: Alice, Bob, and Trudy
      • Encryption Process
      • Decryption Process
      • Key Management and Security
      • Advantages and Limitations of Asymmetric Cryptography
    • 3.2 Public and Private Keys
      • Public Key
      • Private Key
      • Security Measures
      • Core Principles
    • 3.3 Applications
    • 3.4 RSA Encryption and Decryption
      • Key Generation
      • Encryption and Decryption Process
      • Mathematical Foundation
      • Implementing RSA from Scratch in Python
        • Generating Prime Numbers
        • Generating Key Pairs
        • Encryption and Decryption
        • Running the Code
        • Important Notes
        • Conclusion
    • 3.5 Performing Asymmetric Cryptography in Python
      • Getting Started
      • Generating the Keys
      • Performing Encryption and Decryption
      • Conclusion
    • 3.6 Elliptic Curve Cryptography
      • Key Elements of ECC
      • Encryption and Decryption Process
    • 3.7 Implementing Elliptic Curve Cryptography in Python
      • Understanding the Python Implementation
      • Writing the Code
      • Code Explanation
    • 3.8 Conclusion
  • Chapter 4: Cryptographic Hash Functions
    • 4.1 What are Cryptographic Hash Functions
      • Core Characteristics
      • Importance in Data Security
    • 4.2 Common Hash Functions
      • MD5 (Message Digest Algorithm 5)
      • SHA (Secure Hash Algorithm) Family
      • BLAKE2
      • RIPEMD-160
      • Understanding the Differences
    • 4.3 Applications of Cryptographic Hash Functions
      • Data Integrity Verification
      • Password Storage
      • Digital Signatures
      • Data Verification
      • Forensic Analysis
      • Cryptographic Security
    • 4.4 Hashes in Python
      • Exploring the hashlib Module
      • Benchmarking Hash Functions
      • Cracking Hashes
      • Conclusion
  • Chapter 5: Message Authentication and Digital Signatures
    • 5.1 Message Authentication Codes (MACs)
      • The Role of MACs
      • MAC Generation and Verification
      • Common MAC Algorithms
      • Applications of MACs
      • Hashes vs MACs
    • 5.2 Hash-Based Message Authentication Codes (HMACs)
      • Purpose and Significance of HMAC
      • HMAC Generation and Verification Process
      • Benefits of HMAC
      • Applications of HMAC
      • Conclusion
    • 5.3 Digital Signatures
      • The Digital Signature Creation Process
      • The Digital Signature Verification Process
      • Applications of Digital Signatures
      • Benefits of Digital Signatures
    • 5.4 Generating and Verifying Digital Signatures in Python
    • 5.5 Chapter Wrap-up
  • Chapter 6: Practical Cryptography Projects
    • 6.1 The Caesar Cipher
      • Implementing the Caesar Cipher
      • Cracking the Caesar Cipher
    • 6.2 The Affine Cipher
      • Implementing the Affine Cipher
      • Cracking the Affine Cipher
    • 6.3 PDF Locking and Cracking
      • Building a PDF File Locker
      • Building a PDF File Cracker
        • Performing the Brute-force
        • Writing the Main Code
        • Running the Code
        • Conclusion
    • 6.4 ZIP File Locking and Cracking
      • Building a ZIP File Locker
      • Adding a Password to an Existing ZIP File
      • Building a ZIP File Cracker
    • 6.5 Building a Password Manager
    • 6.6 Building a File Encryption Utility
    • 6.7 Building a Hash Validator
    • 6.8 Building Ransomware in Python
      • Getting Started
      • Deriving the Key from a Password
      • File Encryption
      • File Decryption
      • Encrypting and Decrypting Folders
      • Running the Code
      • Conclusion
  • Chapter 7: Best Practices and Security Considerations
    • 7.1 Cryptography Best Practices
    • 7.2 Key Management and Storage
    • 7.3 Common Cryptographic Pitfalls
    • 7.4 Future of Cryptography
    • Conclusion

   Last Updated: apr 2024