How I can recover a password of a 7z file?
The best way is probably to ask the person who created the archive. :-p
Well known fact: NO SUPPORT for lost or forgotten
PWD's, since PKARC ...
7-zip uses AES... isn't the whole point in using such a strong algorithm to make it so *no one* can decrypt it (theoretically, of course)? I assume a brute-force attack would work, if you had enough processing-power to throw at it (several machines), and if the password was of little length. Other than that, I don't see how you're going to get it back. This isn't just weak ZIP encryption. This is AES.