The Diana Cryptosystem - For educational purposes
When using the program, you have to write all words together, without spaces. To group into five letter groups, you can use my ug program, found in my ds — Dein Star repository and for pads creation, you can use my pads repository.
For more information about the Diana Cryptosystem: https://rijmenants.blogspot.com/2017/10/a-fast-reciprocal-one-time-pad-table.html