Why Computational Number Theory Still Runs the Internet
I picked up Computational Number Theory and Modern Cryptography because I was tired of the one-line version of internet security. Song Y. Yan wrote it. The ISBN is 978-1-118-18858-3. Wiley and Higher Education Press published it in 2013. It is a graduate textbook. It is dry in places. It is formula-heavy. And the spine of the argument is still the security model your phone uses when it opens a lock icon.