alt Hacker Newshttps://www.schneier.com/books/applied-cryptography/
Was one of the best books I read back in the day, It wasn't only about the algorithms themselves, also about how many verification schemes worked, in an easy to understand manner.
Today I'd say the knowledge of protocols is still valid, just that the algorithms first themselves need to be post-quantum secure.
I don't want to go off on a whole thing here given this is a thread about books for children, but this is definitely not true and hasn't been true for decades; it might never have been true. The cryptography in "Applied Cryptography" would have gotten you in pretty deep trouble as far back as the late 1990s. It's missing most of modern cryptography.