[neodypsis]

> I mind that resources about how to use crypto in software applications are often inscrutable, all the way down to library design, for no good reason.

I haven't read it, but I plan to, eventually. There's a book titled "Cryptography Engineering: Design Principles and Practical Applications" that could help you.

[throw88888]

Schneier’s book? I can fully recommend that. It comes at the solutions from a practical point of view instead of the theoretical one.

[neodypsis]

> Schneier’s book?

Yes