Is this possible to brute force? idop Junior Member Posts: 2 Threads: 1 Joined: May 2021   05-16-2021, 07:55 PM (This post was last modified: 05-16-2021, 07:57 PM by idop.) Hi guys, I'm trying to brute a password, known to be between 12-25 characters, here is the list of possible chars: Code:`ertyudfghjcvbnm34567`Can be uppercase or lowercase and in any order, but no other char or number (only the above). I have the 5000-iteration sha256 hash of the password. Is this something that can be brute forced? or I'm wasting my time? I am going to rent GPUs to do it (RTX 3090). It will be really helpful if some one can give a mere estimate on how much it will take with this GPU. Chick3nman The Man, The Myth, The Chicken Posts: 386 Threads: 2 Joined: Dec 2015 05-16-2021, 08:13 PM (This post was last modified: 05-16-2021, 08:17 PM by Chick3nman.) That keyspace is far too large for you to be able to bruteforce, even with the limited character set and at the lowest length of 12. Edit: Some math for proofing 20 characters, 12 length, so 20^12 as total number of candidates, divided by a speed of roughly 2MH/s on a 3090 will give you approx 23703 days on 1x 3090. Or, 1 day on approx 23703x 3090. Each length longer than 12 increases this keyspace exponentially. idop Junior Member Posts: 2 Threads: 1 Joined: May 2021 05-16-2021, 08:31 PM (05-16-2021, 08:13 PM)Chick3nman Wrote: That keyspace is far too large for you to be able to bruteforce, even with the limited character set and at the lowest length of 12. Edit: Some math for proofing 20 characters, 12 length, so 20^12 as total number of candidates, divided by a speed of roughly 2MH/s on a 3090 will give you approx 23703 days on 1x 3090. Or, 1 day on approx 23703x 3090. Each length longer than 12 increases this keyspace exponentially. Understood, Thank you very much for the estimate too, very helpful. « Next Oldest | Next Newest »