Pick a value for the script tnt2zip.c "encryption / decryption TNTFOLDER"?

Question

Zip

There is an archive, which is a zip with encrypted headers.
There is a utility that converts the whole thing into the proper form, but it does not cope with the desired archive. (It converts to a normal ZIP, but any archiver swears "Error in the headers".

) 2 months.)

Format Specifications
Normal ZIP file with encrypted headers

Notes and Comments
The TNTFOLDER files are normal ZIP files but with all the headers encrypted through an algorithm which requires the sequential decryption of the ZIP directories in the following order: end central, central and local
For the encryption /decryption is required an 8 bits number which is probably calculated on the filename (not verified), due to the short range of this number it can be easily brute forced comparing the result with the sign of the end central directory

I ask for your help.

Utility.
aluigi.altervista.org/papers/tnt2zip.zip
(is a script written in C)
Archive.
https://drive.google.com/file/d/1j2AkpRW5IyBcljVk_...

Answer 1

Every whim for your money

Answer 2

Yes, there is a small error in the utility
https://yadi.sk/d/2pjzuGEZeCg9Rw