For those looking to get working knowledge of modern cryptography, I recommend https://www.amazon.com/Serious-Cryptography-Practical-Introduction-Encryption/dp/

For those looking to get working knowledge of modern cryptography, I recommend https://www.amazon.com/Serious-Cryptography-Practical-Introduction-Encryption/dp/1593278268 https://www.amazon.com/Serious-Cryptography-Practical-Introd... I've been working my way through it and it's the most lucid intro text I've read on the subject.