Is this possible to brute force? - Printable Version +- hashcat Forum (https://hashcat.net/forum) +-- Forum: Support (https://hashcat.net/forum/forum-3.html) +--- Forum: hashcat (https://hashcat.net/forum/forum-45.html) +--- Thread: Is this possible to brute force? (/thread-10111.html) Is this possible to brute force? - idop - 05-16-2021 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. RE: Is this possible to brute force? - Chick3nman - 05-16-2021 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. RE: Is this possible to brute force? - idop - 05-16-2021 (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.