For a 12-character password, a computer with 2 decent GPUs (16000M hash/sec for MD5) can crack the numeric password in just over a minute. Once that's known, th

For a 12-character password, a computer with 2 decent GPUs (16000M hash/sec for MD5) can crack the numeric password in just over a minute. Once that's known, the real password can be recovered in around 25ms.