I remember getting the Enigma algorithm to work under VB and then being very proud of myself. Unfortunately I can no longer find the source code, it would certainly be easy to implement under B4A/J/I. But firstly, it no longer offers any protection these days and secondly, it was very time-consuming.
I am all the more grateful to Erel for the integrated Encrypt/Decrypt function, it is easy to use, fast and offers very good protection.
Of course, with enough criminal energy you can crack any code at some point. It's a question of algorithm and computing power. And in the end, the code at Bletchley was actually cracked by trying out the start roller settings of an Enigma once they had an idea of the encryption principle. Nevertheless, it is a huge effort when you see how many people worked on the project and how many large code-breaking machines were built to decipher the encryption of an ENIGMA, a device the size of a travelling typewriter.
I'm digressing again, wasn't this about COLOSSUS?