Hello! I see that you need an encryption application for your data and I can help you out. I have developed similar desktop applications that encrypts files or text.
I am a full stack developer since 2015 with strong experience in c#, .net, php, Laravel and many more.
Do you have in mind a specific encryption algorithm? Also, do you intend to encrypt only files or some text too?
I am looking forward for more details from you!
Best,
Andrei