Many thanks for your super-fast reply!
I must admit that I wasn't aware that Crypto == pycrypto. However, this is what I wanted to avoid - using a completely orphaned security-related module with unfixed vulnerabilities.... Anyway, will take a closer look and see if it fits my purposes nonetheless.
I am afraid I already know the answer, but maybe... besides pycrypt, there is currently no alternative way to perform symmetric encryption with Pythonista, right?
Again, many thanks!