I picked that one up because of a similar recommendation, but didn't finish it. I think I was expecting an extensive collection of different ciphers throughout

I picked that one up because of a similar recommendation, but didn't finish it. I think I was expecting an extensive collection of different ciphers throughout history with some short historical anectodes to go along with them. But it's really more about a few selected historical applications of encryption with a heavy focus on their historical context.