I get that it kind of seems impossible (to me, atleast), but I was wondering if there was a way to backtrack how a password was generated, given you have bunch of usernames (in the form of IDs) and (seemingly) randomly generated passwords.
I have a few samples of IDs (usernames) and passwords, all of the passwords are of length 6 and they're using hex-lowercase chars (abcdef0123456789). Now, I am not sure if these passwords are generated based on the ID or they're just randomly generated based on a random seed or something.
A little background:
The accounts are student accounts and the institution gives these generated passwords on registration.
Could someone shed some light on this matter? If it's not against the site rules I could post the password samples without the ID nor site name, if that's OK.