Playfair Cipher was used in the movie "National Treasure," in which Nicolas Cage is one of the protagonists. It was also used during, before, and after the US Civil War.

Because I have some notions of a computer programming language (Pascal), I was able to create or reproduce the algorithm (Playfair Cipher) in that language. The code uses letters and numbers (all printable ASCII characters) as well. In other words, it was personalized.

This will be my gift; the said code I created.

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