Exactly like I’ve been saying. Decrypt with something. That’s the main question at the moment. If it decrypts, testing with a ZIP program is a bonus, however the encrypted form has enough self-checking that corruption should be revealed at that level. If you can get a full set of unencrypted ZIP files, there’s a good chance of the recovery getting something (hope all) back even if it needs help (hopefully it won’t). Decryption is essential…
EDIT:
AES Crypt User Guide page 7 shows a decrypt. Short answer is right click, choose AES Decrypt, type password. Here’s what it looks like on the example file that I used for the SharpAESCrypt output earlier:
