>I don't have the ID of the message (it has been almost 10 years since I got his code). And I don't care how he created this function (btw, "born" is a poor choice of a word :) ). His function works for me.
>
>>Here is what I found
>>
>>https://www.berezniker.com/content/pages/visual-foxpro/vfp-implementation-cipher-encryption
>>
>>So it does seem to be the same algorithm just in VFP code.

BTW, in that page the code is not shown properly for me. It's truncated.

I am saying, that the C# implementation is not working for high ASCII values and for us it's critical to make it work for all characters.