دانلود کتاب کاوش رمزنگاری زبان برنامه‌نویسی GO

This book will explain the fundamental principles of ciphers, by introducing you to the simplest cipher scheme imaginable. You’ll learn how it works, implement it in Go, and then you’ll find out why it won’t protect your secrets from anybody who really wants to know them (except perhaps your kid sister). You’ll learn about cipher keys: how they work, what makes them weak or strong, how to generate them, and how to defeat them. You’ll learn how to choose good passwords, and how to store and retrieve them securely, and you’ll learn the “10 Do’s and 500 Don’ts” of writing software applications that handle passwords. In the book, we’ll gradually improve the security and usability of our toy cipher scheme, adding better keys, blocks, operating modes, hashing, authentication, and so on. We’ll talk about predictability and randomness, message digests, cryptocurrency, and all sorts of other stuff that’s fun and interesting (at least, if you’re the kind of person who likes secret codes and dinosaurs). There’ll necessarily be a little bit of math. Now, computer programmers are often somewhat mathematically inclined, but many aren’t, and that’s okay. If you’re one of the latter, don’t worry. We will come across a few equations and formulas, but if they just look like illegible squiggles to you, it doesn’t matter. You will certainly understand the general principles involved, and that’s just fine. (If you are a math whiz, you’ll probably realise pretty soon that I am not. Please email me with a list of all the mistakes you find in the book: I always enjoy hearing from readers.)