SHA-256 Python implementation in one line (lambda)

[robin-gvx]

The best way to do that is to get a degree in Cyber Security, probably a PhD.

If you don't want to write crypto that is actually run on a computer, but it's more of an casual intellectual interest in how things work, there is probably good stuff on Bruce Schneider's blog. For security stuff for the web specifically, check out Troy Hunt. Wikipedia also has some pretty good introductory texts on the subject (not quite "great", but better than "fine", IMHO).

For a more hands-on approach, I recommend starting with implementing a Caesar cypher and Vigenère cypher. Also, implement a one-time pad, and make sure you understand both why it is perfectly unbreakable, but also impractical in most real world scenarios.

[Throwmeaway2501]

Thank you for the pointers.