Search found 110 matches

by Bitweasil
Sun Nov 07, 2010 12:40 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: ATI or Nvidia???
Replies: 5
Views: 9026

Re: ATI or Nvidia???

OpenCL changes the dev environment a bit. However, atom of oclhashcat claims the nVidia OpenCL runtime is massively buggy.

What type of work are you doing? For crypto, ATI is often faster because it has a hardware barrel rotator. For other stuff, it just depends.
by Bitweasil
Thu Aug 19, 2010 5:38 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Saving the keys/hashes?
Replies: 8
Views: 5487

Re: Saving the keys/hashes?

1. You don't understand rainbow tables if you think they're pass:hash pairs.
2. Have you looked at the size requirements for your proposed system with any reasonable password coverage? There's a reason it's not done.
by Bitweasil
Tue Aug 10, 2010 7:17 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RainbowCrack 1.41 for GPU software
Replies: 8
Views: 5981

Re: RainbowCrack 1.41 for GPU software

Is installing a 64-bit Linux that much trouble? The modern Ubuntu installers have support for shrinking a Windows partition and installing alongside. The Cryptohaze GRTs may eventually be supported under Windows, but my search currently relies on mmap, which is not supported on Windows (at least not...
by Bitweasil
Tue Aug 10, 2010 7:16 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: How to bruteforce md5($salt.$data)?
Replies: 5
Views: 5336

Re: How to bruteforce md5($salt.$data)?

You may have luck with the Cryptohaze multiforcer - you can use the per-position character set support to emulate this type of behavior, at least for short salts/passwords. In this case, you'd set the following per-position character sets: 0: t 1: e 2: s 3: t 4: [full US charset/etc] 5: [full US cha...
by Bitweasil
Tue Aug 10, 2010 7:14 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Rtgen with dic CUDA/Brook
Replies: 4
Views: 4404

Re: Rtgen with dic CUDA/Brook

Are you discussing the dictionary mutation tables, or something different?
by Bitweasil
Mon Jul 19, 2010 2:53 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Cryptohaze GRTs are out!
Replies: 1
Views: 2449

Re: Cryptohaze GRTs are out!

0.55 is out with NTLM/MD4 support as well as MD5. Over at cryptohaze!
by Bitweasil
Mon Jul 12, 2010 1:29 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Cryptohaze GRTs are out!
Replies: 1
Views: 2449

Cryptohaze GRTs are out!

http://cryptohaze.com/gpurainbowcracker.php

This is, to my knowledge, the first ground-up rainbow tables implementation using CUDA.

The tables are NOT compatible with the existing rcrack tables - I use a different (much faster) reduction function.

Have fun!
by Bitweasil
Mon May 03, 2010 7:53 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: oclHashcat
Replies: 11
Views: 17950

Re: oclHashcat

Impressive, though I question the CUDA-Multiforcer compare - if you're using 0.7, I think the autotuner is broken (so non-optimal block/thread sizes are being used), and you should probably be using the '-l' switch for 500k MD5 hashes, as it improves speed on large hashlists dramatically. I may test...
by Bitweasil
Fri Feb 19, 2010 11:03 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: BarsWF feature suggestion
Replies: 7
Views: 6439

Re: BarsWF feature suggestion

I'd add that the Cryptohaze multiforcer 0.7 has this feature.
by Bitweasil
Mon Sep 14, 2009 3:45 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Digital Signatures
Replies: 11
Views: 7363

Re: Digital Signatures

^++ You can't directly compare the strength of symmetric encryption algorithms (DES, AES) with public key algorithms (RSA) - the bit count does NOT in any way correlate between the two. AES256 (256 bit key) is theoretically secure well, well beyond feasible futures if the key is kept secure. RSA512 ...
by Bitweasil
Thu Aug 27, 2009 9:29 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RPISEC Distributed Hash cracker
Replies: 2
Views: 2702

Re: RPISEC Distributed Hash cracker

Does this attack a single hash, or full hash lists?
by Bitweasil
Sun Aug 09, 2009 7:55 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: How to crack Cisco IOS enable secret
Replies: 11
Views: 10396

Re: How to crack Cisco IOS enable secret

It's far more complex than that. It's some initial operations, then 1000 iterations of a fairly annoying algorithm that does some string concatenation (GPUs are awful at this) depending on which operation you're on (using modulus, which GPUs are really bad at too). Then it does some final operations...
by Bitweasil
Sat Aug 08, 2009 9:56 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: How to crack Cisco IOS enable secret
Replies: 11
Views: 10396

Re: How to crack Cisco IOS enable secret

Cisco IOS MD5 is just MD5CRYPT with a short hash value, IIRC.

No GPU brute forcers that I'm aware of support this yet.

The algorithm really kind of sucks for GPUs.
by Bitweasil
Wed Jun 17, 2009 8:59 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Algorithm optimizations (reversing steps)
Replies: 19
Views: 15924

Re: Algorithm optimizations (reversing steps)

in regards to a crossover point - how could reversal NOT be beneficial? Even if you re-reverse all hashes quite frequently, wouldn't it still be faster than computing the entire hash algorithm for every plaintext? Re-calculation of the last round of MD4 every 26^2 tries should still be less expensi...
by Bitweasil
Thu Jun 11, 2009 12:54 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: BarsWF only sees one GPU...
Replies: 4
Views: 4064

Re: BarsWF only sees one GPU...

I believe this is a known issue with Vista - it only makes GPUs with displays attached available to CUDA.

Another solution would be to install Linux or XP for cracking - they will both outperform Vista significantly due to dramatically reduced kernel launch times.
by Bitweasil
Mon Jun 01, 2009 3:39 pm
Forum: General Talk
Topic: How are current USA events viewed by those in Russia?
Replies: 3
Views: 3984

How are current USA events viewed by those in Russia?

I am curious as to how the current events in the USA (massive bailouts, nationalization of the auto industry, "spend now, tax the rich later," etc) are viewed by those who have lived through such things in Russia over the past 40 years or so. It seems to be a very similar road that Russia tried and ...
by Bitweasil
Fri May 29, 2009 2:16 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: issue with asus HD4890 GFX (possible bug)
Replies: 3
Views: 3448

Re: issue with asus HD4890 GFX (possible bug)

There's no way a single 4890 should be beating a 4870x2 by a factor of 2.5 - it should be around 60% the performance or so, or around 1200M/s
by Bitweasil
Fri May 29, 2009 12:52 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: issue with asus HD4890 GFX (possible bug)
Replies: 3
Views: 3448

Re: issue with asus HD4890 GFX (possible bug)

What driver revision do you have installed?
by Bitweasil
Wed May 27, 2009 2:47 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: PassRape - CUDA/ATI SHA-1/mysql/MSSQL bruter
Replies: 11
Views: 9866

Re: PassRape - CUDA/ATI SHA-1/mysql/MSSQL bruter

budden wrote:I can't run it on my XP x86 CUDA2.2 station with 8800GTS 512mb - could you please check and report if it works?
In that case please specify your CUDA version, drivers, OS and GPU. On Vista it works fine AFAIK.
I believe he has fixed the XP issue and will be releasing a revision shortly.
by Bitweasil
Fri May 15, 2009 10:39 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Request: NT Hash (actually MD4)
Replies: 54
Views: 40517

Re: Request: NT Hash (actually MD4)

I'd add that Cryptohaze as a very nice Windows/Linux NTLM brute forcer - check the forum for the 0.7 binaries, as it's a LOT faster than the 0.6 ones on the front page.
by Bitweasil
Thu May 14, 2009 6:34 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: Updated CUDA Multiforcer, with SHA1 & per-position charset
Replies: 11
Views: 9395

Re: Updated CUDA Multiforcer, with SHA1 & per-position charset

I noticed the branching switch statement in your md5 code. If you are interested, I have a method that places the 0x80 in the correct place without branching, at the cost of about 20 more ops. I am afraid I don't have the code on me, but I can get it to you soon if you are interested. I've tested i...
by Bitweasil
Wed May 13, 2009 6:12 pm
Forum: General Talk
Topic: Your workplace show-off :-)
Replies: 31
Views: 37014

Re: Your workplace show-off :-)

DSCF2756.jpg
Workspace
Macs for desktops, the real servers doing the CUDA work are Linux servers in the other room. I'll try to get a pic of my research area & the i7 box too.
by Bitweasil
Wed May 13, 2009 3:31 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: CUDA-Multiforcer source
Replies: 2
Views: 3640

CUDA-Multiforcer source

Since it's buried in the other post:

http://www.cryptohaze.com/releases/CUDA ... .7.tar.bz2

It should compile if you put it in the projects directory of the CUDA SDK on a 64-bit Linux box. Beyond that, you're on your own.

Discussion over at the cryptohaze forums as well.