You are young, and the most important is that you develop your skills now (and make much more money later)
Second this. Earning money is not possible if you can't build or contribute something useful, and that's only possible if you have the skills.
Which programming language that you know of? If you're good enough with your programming, start building your project or try to make some plugin for Wordpress, etc. There's a lot of demand over there, which might be a good start if you don't want to focus on cryptography.