>If my calculations are correct, that GPU is making 1,000,000,000,000 guesses per second.
>The takeaway here is that cracking a 64bit password only cost $1700 and is totally doable in 3 weeks.
...assuming that each "guess" only requires a comparison. If you factor in hashing, it's much slower. According to gpuhashcat benchmarks[1], a 1080 ti crack md5 passwords at ~25 GH/s (1GH/s = 1 billion guesses per second), phpass at ~6.9 MH/s, and bcrypt passwords at 13 KH/s.
>The takeaway here is that cracking a 64bit password only cost $1700 and is totally doable in 3 weeks.
...assuming that each "guess" only requires a comparison. If you factor in hashing, it's much slower. According to gpuhashcat benchmarks[1], a 1080 ti crack md5 passwords at ~25 GH/s (1GH/s = 1 billion guesses per second), phpass at ~6.9 MH/s, and bcrypt passwords at 13 KH/s.
[1] https://gist.github.com/epixoip/a83d38f412b4737e99bbef804a27...