I recommend Dan Drowns Digital Fortress: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Digital_Fortress" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Digital_Fortress</a>
the book is filled with Cryptography, Quantum computing, NSA, Assasins... _i.e sorted me out pretty well_