Search found 136 matches

by Sc00bz
Fri Jan 23, 2009 6:58 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Why only 1 CPU?
Replies: 5
Views: 6294

Re: Why only 1 CPU?

siekan wrote:Why there's only 1 CPU on PC1? And is it normal that there's ~900 MHash/s vs. only ~300 Mhash/s on PC2's GPU?
Yes as a "Palit GeForce 8800GT 512MB" is only 504 GFLOPS and the other computer has some ATI card probably a Radeon HD 4850 which is 736 GFLOPS.
by Sc00bz
Thu Jan 22, 2009 7:44 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: What hash to support next?
Replies: 51
Views: 32605

Re: What hash to support next?

inn wrote:
neinbrucke wrote:"NTLM, SHA-1, Vanilla MD5 are all easily cracked using rainbow tables"
what about MySQL then?? :D
MySQL3.23 or MySQL-SHA1? If MySQL3.23 then there is no point as you can already test over a trillion passwords/sec on a 2.4 GHz P4.
by Sc00bz
Tue Jan 13, 2009 11:22 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: MD5 Is Officially Insecure: Hackers Break SSL Certificates
Replies: 22
Views: 15388

Re: MD5 Is Officially Insecure: Hackers Break SSL Certificates

Ohh right there's always the problem with divergent code paths between threads on a MP.
by Sc00bz
Tue Jan 13, 2009 12:06 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: MD5 Is Officially Insecure: Hackers Break SSL Certificates
Replies: 22
Views: 15388

Re: MD5 Is Officially Insecure: Hackers Break SSL Certificates

The only question is how much local memory is needed for a task, as Cell have much more local memory. You got that backwards a PS3 only have 256 MiB vs 512 MiB to 1 GiB. Unless you're talking about cache which then it is like what 256 kiB/core (PS3) vs 64 kiB/multiprocessor (Nvidia). I'm pretty sur...
by Sc00bz
Mon Jan 12, 2009 11:51 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: about the algorithm used
Replies: 49
Views: 36279

Re: about the algorithm used

And i'm still confused about this "reverse the last step"...which is the last step?? is it the last of the 64 steps or the whole last round (the 4th one)??...can you point me somewhere i can find more about it?? I saw the topic abot algorith optmization but I still dont understand it weel enough to...
by Sc00bz
Thu Jan 08, 2009 11:45 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: MD5 CAL
Replies: 7
Views: 6759

Re: MD5 CAL

Bars you're acting like you didn't know SSE4.1 was useful http://3.14.by/forum/viewtopic.php?f=8& ... t=sse#p268 SSE4.1 brings two awesome instructions PMULLD and PTEST. PMULLD is more for rainbow tables.
by Sc00bz
Wed Dec 31, 2008 9:31 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Charsets to work on in distributed version
Replies: 15
Views: 11852

Re: Charsets to work on in distributed version

Since you're talking about MD5 we should probably do valid UTF-8 *bytes*. 0 0000000 to 0 1111111 (U+000000 to U+00007F) 10 000000 to 10 111111 110 00010 to 110 11111 (U+000080 to U+0007FF) 1110 0000 to 1110 1111 (U+000800 to U+00FFFF) 11110 000 to 11110 011 (U+010000 to U+0FFFFF) 11110 100 (U+100000...
by Sc00bz
Fri Dec 05, 2008 7:40 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: How would you build the fastest BarsWF computer?
Replies: 12
Views: 9692

Re: How would you build the fastest BarsWF computer?

The best would likely be this: Skulltrail 2x quad core Xeon Harpertown 3.2ghz overclocked 4x GTX 280's in SLI watercooled and overclocked 2x raptors in raid 0 Dude you are out-of-date. Have you been living under a rock or what ;) The current best-performing 2-socket 4-gpu 2-drive config is: * 2x qu...
by Sc00bz
Thu Nov 20, 2008 6:06 am
Forum: General Talk
Topic: Digital TV
Replies: 9
Views: 10228

Re: Digital TV

I have that, in the US it is such a nice picture that someone thought we were stealing it. The only problem is that sometimes the channel cuts in and out. You know what's awesomely wrong with the US, everyone knows about the DTV switch but almost no one knows that after the switch you still can get ...
by Sc00bz
Tue Nov 18, 2008 2:04 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Video Card upgrade
Replies: 3
Views: 4828

Re: Video Card upgrade

It looks like cost really isn't that much of an issue so the best performance/watt, performance/slot (without modifications, since you could water cool a GeForce GTX 280 to make it take only one slot), and one of the highest performance/cost is the GeForce 9800 GX2.
by Sc00bz
Fri Nov 14, 2008 10:38 am
Forum: General Talk
Topic: Quadro FX 5800
Replies: 8
Views: 8642

Re: Quadro FX 5800

While it's copying to the host you start filling the other the extra 1% with chains. Blame nVidia, it's not going to work like that. Right now you cannot copy data during kernel execution. AMD claims that they support that. Check out the CUDA SDK project simpleStreams. "This sample illustrates the ...
by Sc00bz
Thu Nov 13, 2008 5:37 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: barswf.save = ?
Replies: 8
Views: 6806

Re: barswf.save = ?

You would be correct and I am out of it.
by Sc00bz
Thu Nov 13, 2008 5:33 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: barswf.save = ?
Replies: 8
Views: 6806

Re: barswf.save = ?

This is my guess: 0 // I have no clue... I bet this is the version number so "version 0" 8b.. // hash md5 // hashing algorithm 12 // length of last password checked 0 0 0 0 0 2 3 7 8 8 8 0 // last password checked (indexes into character set) 10 // character set length 48 49 50 51 52 53 54 55 56 57 ...
by Sc00bz
Thu Nov 13, 2008 5:22 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Poll: How many hashes you are going to crack in multi-hash?
Replies: 7
Views: 7728

Re: Poll: How many hashes you are going to crack in multi-hash?

He's not going to cripple single hash cracking just to make it crack multiple hashes at once. Internally it will have two separate code paths and maybe more if he decides to use different methods for just a few hashes, a good amount of hashes, and a shit ton of hashes :crazy:. --------- Oh way never...
by Sc00bz
Thu Nov 13, 2008 5:16 pm
Forum: General Talk
Topic: Quadro FX 5800
Replies: 8
Views: 8642

Re: Quadro FX 5800

You would totally use this for sorting the chains. So while generating the chains you fill like 99% the memory with chains then sort it all and copy it to the host. While it's copying to the host you start filling the other the extra 1% with chains. Then the host will remove merged chains and write ...
by Sc00bz
Mon Nov 03, 2008 11:28 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Algorithm optimizations (reversing steps)
Replies: 19
Views: 21841

Re: Algorithm optimizations (reversing steps)

That's only part of it. You can reverse the whole last round and a few partial steps in the 3 round. All you do is keep everything but the first 4 bytes in the password constant. Then just do all the steps in reverse. For each reverse step do REV_II: #define REV_II(a,b,c,d,data,shift,constant) \ a =...
by Sc00bz
Fri Oct 31, 2008 1:49 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Vote for the distributed project name!
Replies: 47
Views: 86629

Re: Vote for the distributed project name!

ps: i don't think is a good idea to specify in the name of the "tehnology" used, in the title. maybe bars knows how to code on a PS3 :D A PS3 is slower than a video card. Just count the FLOPS. 3.2 GHz * 7 cores (1 PPU and 6 SPUs) * 2 instructions/clock * 4 ops/instruction = 179.2 GFLOPS. So any GeF...
by Sc00bz
Fri Oct 31, 2008 1:28 am
Forum: General Talk
Topic: Good movies
Replies: 13
Views: 11397

Re: Good movies

Well Zeitgeist is free: http://www.zeitgeistmovie.com/ scroll down to "CLICK ABOVE TO WATCH 'ZEITGEIST, THE MOVIE'"
by Sc00bz
Thu Oct 30, 2008 7:20 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: beautiful hashes
Replies: 4
Views: 5570

Re: beautiful hashes

I fail to see why this is a "beautiful hash" is it the 7, 2s at the beginning? because you are expected to find a hash like that every 16,777,216 random hashes.
by Sc00bz
Tue Oct 28, 2008 11:39 pm
Forum: General Talk
Topic: Good movies
Replies: 13
Views: 11397

Re: Good movies

Have you seen "Zeitgeist" ? You may skip first part about religion :-) What, it's more like skip the part about 9/11 because that's what makes Zeitgeist lose credibility. Since it was proven that explosives weren't need to take down the buildings in the same way they came down, but I'm not doubting...
by Sc00bz
Mon Oct 27, 2008 8:59 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: BarsWF feature wishlist
Replies: 53
Views: 41200

Re: BarsWF feature wishlist

You more than likely would not be able to reverse the last round of MD5 which will make it go from just doing 69% of an MD5 to doing 92% of an MD5. That's 33% slower. Also the generation of the password to check will take longer making it even slower.
by Sc00bz
Thu Oct 23, 2008 8:42 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Problems Running Cuda version
Replies: 46
Views: 34214

Re: Problems Running Cuda version

I found the answer in Programming_Guide_2.0beta2.pdf in section 3.2 Multiple Devices. The use of multiple GPUs as CUDA devices by an application running on a multi-GPU system is only guaranteed to work if theses GPUs are of the same type. So having a 8800GT and a 8400GS in the same computer is not g...
by Sc00bz
Wed Oct 22, 2008 11:21 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: AMD port microblog :-)
Replies: 27
Views: 25624

Re: AMD port microblog :-)

This just seems like you are using "just stick a penny in it" to solve the circuit breaker from tripping. Did you try to pull evenly across both rails. I had this same problem with an old computer and just switching a few cables fixed it.
by Sc00bz
Wed Oct 22, 2008 9:31 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: AMD port microblog :-)
Replies: 27
Views: 25624

Re: AMD port microblog :-)

I think the reason for multiple rails is so that there is not too much current going through each wire. If there is one rail then you could technically have all the current going through one wire. The problem with that is it will be too much current for that wire which will cause problems if it cont...
by Sc00bz
Fri Oct 17, 2008 9:53 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: How high can you get
Replies: 260
Views: 211225

Re: How high can you get

That's not fair :sad: Why when Intel makes an instruction set AMD have to support that. If AMD does - Intel just ignores it... (With an exception of x64 set) AMD does the same to Intel I'm pretty sure SSSE3 (not SSE3) is Intel only, SSE4.1 is Intel only, SSE4a is AMD only, and SSE4.2 is Intel only....