I have forgotten the password for an encrypted 7zip file (the filenames are not hidden), and I have copies of some of the unencrypted files. Is there a way I can use this to find out what the password is by using these copies?
It feels like there should be a way of using the knowledge of what some of the files look like unencrypted, to find out the password in a faster way than just trying to brute force it. However, I don't know anything about how 7zip encrypts files.
Is there any program that can do this? If not, and you know about encryption: Is it possible to write such a program?