This question tagged as encryption. encryption tag is not suitable tag for the question. Which tag is suitable for such questions? It seems we need a new tag for such questions.
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The encryption tag is not suitable for the question, you are right.
For questions about the syntax we have the notation tag – I added it there. There is also the related tag terminology.
The question itself actually is not a really good fit on our site, I suppose – it borders on "please recommend me a book", and such questions are not really constructive. I'm a bit on doubt on what to do with the question, whether it could be reworded or should be closed.
