出版时间:2023.8
官网链接:No Starch Press
下载地址:百度网盘(EPUB)
内容简介:
Solve history’s most hidden secrets alongside expert codebreakers Elonka Dunin and Klaus Schmeh, as they guide you through the world of encrypted texts. With a focus on cracking real-world document encryptions—including some crime-based coded mysteries that remain unsolved—you’ll be introduced to the free computer software that professional cryptographers use, helping you build your skills with state-of-the art tools. You’ll also be inspired by thrilling success stories, like how the first three parts of Kryptos were broken.
Each chapter introduces you to a specific cryptanalysis technique, and presents factual examples of text encrypted using that scheme—from modern postcards to 19-century newspaper ads, war-time telegrams, notes smuggled into prisons, and even entire books written in code. Along the way, you’ll work on NSA-developed challenges, detect and break a Caesar cipher, crack an encrypted journal from the movie The Prestige, and much more.
You’ll learn:
- How to crack simple substitution, polyalphabetic, and transposition ciphers
- How to use free online cryptanalysis software, like CrypTool 2, to aid your analysis
- How to identify clues and patterns to figure out what encryption scheme is being used
- How to encrypt your own emails and secret messages