Java to .Net

Hello how are you.
I have a project in Java (I don't have the source code, I had to decompile it with online tools) and I am recreating a similar tool in .NET (Visual Basic).

When my file is saved (both in Java and VB) the program takes the last 3 digits of the employee ID and converts them into a password, but in the result of my security.data they are encrypted.

What I need to do with the program is for my visual basic to encrypt my password and generate the signature (last parameter of the security.data) in the same way that java does, that is, if I generate a security.data with The .Net , my password and signature parameter, must be the same as the one generated by Java (if not, it does not work for me in another tool that uses security.data)


Here I attach the tool in Java and I attach the tool that I am developing in visual basic.

Apart from a video of how it should work: https://youtu.be/pPnfgNfVPxI

Attached files: https://www.mediafire.com/folder/znt4dqzpi3t1x/Java_and_NET