The Cryptoclub: Using Mathematics to Make and Break Secret Codes
ISBN: 156881223X
Buy on Amazon
Found in 1 comment on Hacker News
znpy · 2017-09-06 · Original thread
The Cryptoclub: Using Mathematics to Make and Break Secret Codes: https://www.amazon.it/Cryptoclub-Using-Mathematics-Break-Sec...

My guess is that it would be a nice read for adults too.

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