1 How can I break an encrypted message? And other introductory questions
The postcard in Figure 1-1 (provided to us by Karsten Hansky) was sent in 1904.1 As can be easily seen, the message written on it is encrypted.
Figure 1-1: Apparently, the sender of this postcard didn’t want the letter carrier or the family of the recipient to read it. So, they chose to encrypt the message.
Decades- or even centuries-old encrypted messages are far from unusual. Countless encrypted diaries, letters, notebooks, radio messages, newspaper ads, and telegrams ...
Get Codebreaking now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
