Practical Cryptography With Go
Practical Cryptography With Go
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Practical Cryptography With Go

Last updated on 2015-04-28

About the Book

This is an introduction to cryptography for developers. It assumes that you aren't looking for cryptographic theories, but practical ways to use cryptography in your projects. It covers the basic standard building blocks, and includes some sample code to help you get started.

The example code for the book is available on Github, and is ISC licensed.

The book is currently being rewritten; 100% of the royalties go to the EFF.

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Table of Contents

  • Chapter 1: Introduction
  • Chapter 2: Engineering concerns and platform security
    • Basic security
    • Specifications
    • On errors
    • Input sanitisation
    • Memory
    • Randomness
    • Time
    • Side channels
    • Privacy and anonymity
    • Trusted computing
    • Virtual environments
    • Public key infrastructure
    • What cryptography does not provide
    • Data lifetimes
    • Options, knobs, and dials
    • Compatibility
    • Conclusion
    • Further reading
  • Chapter 3: Symmetric Security
    • Indistinguishability
    • Authenticity and integrity
    • NaCl
    • AES-GCM
    • AES-CTR with HMAC
    • AES-CBC
    • Messages v. streams
    • Conclusions
    • Further reading
  • Chapter 4: Secure Channels and Key Exchange
    • Secure channel
    • Password-based key derivation
    • Asymmetric key exchange: ECDH
    • NIST curves
    • Other key exchange methods
    • Practical: File encryptor
    • Further reading
  • Chapter 5: Digital signatures
    • Cryptographic hashing algorithms
    • Forward secrecy
    • Ed25519
    • ECDSA
    • RSA
    • Conclusions
    • Practical: Sessions with identities
    • Further reading
  • Appendix: Crypto Review of Chapters

Causes Supported

Electronic Frontier Foundation

Defending your civil liberties in a digital world.

Based in San Francisco, EFF is a donor-supported membership organization working to protect fundamental rights regardless of technology.

From the Internet to the iPod, technologies are transforming our society and empowering us as speakers, citizens, creators, and consumers. When our freedoms in the networked world come under attack, the Electronic Frontier Foundation (EFF) is the first line of defense. EFF broke new ground when it was founded in 1990—well before the Internet was on most people's radar—and continues to confront cutting-edge issues defending free speech, privacy, innovation, and consumer rights today. From the beginning, EFF has championed the public interest in every critical battle affecting digital rights.

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