Good afternoon!

I have writing a program that zip and unzip files, like Winzip does.

Now, I would like to do a check before unzipping files. I wrote a code source, but I don´t know if is the right Checksum value returned. What is the correct value that it must return when the file is OK, or the value when the file is damned?

Would you help me?

Thanks a lot. Annie Fran