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| 02:02.30 | lennert | whee, i'm running DES in a spartan3 |
| 02:03.39 | lennert | Clock period: 5.480ns (frequency: 182.472MHz) |
| 02:05.58 | [g2] | cool |
| 02:06.14 | [g2] | congrats |
| 02:06.36 | [g2] | so 182.5 ish cracks per second eh ? |
| 02:06.42 | [g2] | per spartan3 |
| 02:07.05 | lennert | well |
| 02:07.09 | lennert | i suspect the number is on the high side |
| 02:07.14 | [g2] | or about 61 triple DES |
| 02:07.14 | lennert | but maybe |
| 02:07.37 | lennert | 2^56 / 182472000 = 394896718.6 |
| 02:07.40 | [g2] | with M after the numbers :) |
| 02:07.58 | lennert | a thousand spartan3s, it'll take 100 hours |
| 02:08.07 | lennert | to exhaust 2^56 |
| 02:08.17 | [g2] | or 50 hours on average :) |
| 02:08.23 | lennert | yeah |
| 02:08.29 | [g2] | less than a weeken |
| 02:08.30 | [g2] | d |
| 02:08.34 | lennert | yeah, not bad |
| 02:08.46 | lennert | ~$30 per spartan3 though :) |
| 02:09.00 | lennert | still, $40k is not much for a machine that can crack des in a weekend |
| 02:09.27 | [g2] | to me maybe but not to other bigger entities |
| 02:09.50 | lennert | i mean, if your goal is to crack des in a weekend, it's likely that you'll have the $40k to shell out for it |
| 02:09.53 | [g2] | that's like a whole development budget + |
| 02:10.31 | lennert | hehe |
| 02:10.37 | [g2] | but it is a cool benchmard |
| 02:10.39 | [g2] | k |
| 02:10.45 | lennert | i don't even know if i have enough area to run multiple DES cores in parallel |
| 02:10.58 | lennert | i definitely want to try this on the virtex2 pro board |
| 02:11.16 | lennert | how many des cores i'd be able to run on that.. ? |
| 02:11.27 | [g2] | well the $30-40K number probably changes a lot if you go to multiple engines on chip |
| 02:11.36 | [g2] | like a 1.5 or 5M gate part |
| 02:11.41 | lennert | yeah |
| 02:11.56 | [g2] | so $30-40K might be 6 hours |
| 02:12.01 | [g2] | on average |
| 02:12.32 | ka6sox-office | the NSA has its own FAB plant. |
| 02:12.42 | [g2] | really ? |
| 02:12.49 | lennert | ka6sox-office: the NSA is most likely behind on xilinx |
| 02:12.57 | [g2] | i guess that would make sense |
| 02:13.01 | ka6sox-office | ya |
| 02:13.03 | lennert | ka6sox-office: they're not so cutting edge as many people believe |
| 02:13.11 | [g2] | hey here's a mask can you make some of these ? |
| 02:13.30 | lennert | [g2]: now do it in 65nm :) |
| 02:13.51 | [g2] | they're probably on 500nm :) |
| 02:14.10 | [g2] | but it's hardened and runs from space :) |
| 02:14.16 | lennert | yeah |
| 02:14.22 | lennert | and it's tamper-proof and tempest-proof |
| 02:14.32 | lennert | and every gate has 50 lines of specs dedicated to it |
| 02:14.56 | ka6sox-office | I'm talking about the stuff in the Basement. |
| 02:15.01 | [g2] | and 3 redundant paths |
| 02:15.15 | [g2] | 2 of 3 votes wins |
| 02:15.48 | lennert | triple module redundancy, yes |
| 02:15.53 | ka6sox-office | better than the 5 500kps machines that run the shuttle |
| 02:19.11 | lennert | i'll do an md4 core next |
| 02:19.34 | [g2] | lennert is turning into the vhdl man! |
| 02:19.45 | lennert | [g2]: i'm just messing around |
| 02:22.33 | lennert | anyway, bed time |
| 02:22.34 | lennert | g'nite all |
| 02:23.34 | ka6sox-office | nite Lennert |
| 02:28.54 | [g2] | sweet dreams |
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