Search found 89 matches

by IvanG
Tue Jul 21, 2009 7:00 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: One more GPU hash cracker
Replies: 60
Views: 41668

Re: One more GPU hash cracker

Mysql5 already supported, mysql < 5 is too different (no MD4/5/SHA1 hashes there), so I'm just lazy to implement it :). May be later.
by IvanG
Tue Jul 14, 2009 2:50 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: One more GPU hash cracker
Replies: 60
Views: 41668

Re: One more GPU hash cracker

Is it me or there is no AMD/ATI bruteforcer with salt support? I found 2 Cuda ones, but none for AMD/ATI. From v0.3 it's with salt, unicode & md4 support. Salt position is limited though -- only $pass.$salt. RV730 is not supported (4670) :? Minimum is 4830 and it's written in readme.txt. and also c...
by IvanG
Wed Jul 08, 2009 4:56 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: One more GPU hash cracker
Replies: 60
Views: 41668

Re: One more GPU hash cracker

BarsMonster wrote:
_haxxor_ wrote:ah love is in the air :joy:
or is it competition ?
I doubt it's love :crazy:
Me too :D.
by IvanG
Wed Jul 08, 2009 8:33 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: One more GPU hash cracker
Replies: 60
Views: 41668

One more GPU hash cracker

http://golubev.com/hashgpu.htm

It's about 10% faster than BarsWF on ATI GPUs and about 10% slower than BarsWF on nVidia ones :).
by IvanG
Mon Jun 22, 2009 4:55 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: ZIP password Cracking
Replies: 4
Views: 4845

Re: ZIP password Cracking

Well, you described pretty much everything :).

Winzip password validation is really easy thing, no need to extract and CRC32 whole file (as for RAR), just PBKDF2 w/ SHA1, that's all.
by IvanG
Fri Jun 19, 2009 8:09 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: ZIP password Cracking
Replies: 4
Views: 4845

Re: ZIP password Cracking

For classic zip encryption it's almost no point to use GPU because of algorithm (CRC32 == random mem access, multiplications and complex validation required). For winzip's "strong encryption" files GPU is perfect match -- SHA1 all the way and cracking speed is about 140K/s on HD4850. And I doubt the...
by IvanG
Fri May 15, 2009 5:30 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RAR archive encription
Replies: 27
Views: 31251

Re: RAR archive encription

but solodnikov got some more interesting stuff-asprotect; I know (as well as I knew Solodovnikov IRL :)). Just FYI -- ASProtect is no more Solodovnikov's thing, StarForce purchased ASPR year+ ago. icc -more suitable, then watcom,it like borland compilers put data and code into the same section :mad...
by IvanG
Thu May 14, 2009 4:40 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RAR archive encription
Replies: 27
Views: 31251

Re: RAR archive encription

lemon wrote:Do you think it's also possible to use CUDA on non-"Encrypt filenames" files ?
Yes, it's possible. But it requires more complex password validation -- need to decrypt and unpack protected file instead of simple header's bytes check.
by IvanG
Wed May 13, 2009 8:28 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RAR archive encription
Replies: 27
Views: 31251

Re: RAR archive encription

And now nVidia "CUDA" cards also supported :). http://www.golubev.com/rargpu.htm.

On 8600 GT it's about 2x times faster than single core of Q6600 @ 2.4Ghz. So (estimated) about 12x faster on GTX 260 w/ 192SP.
Need some heavy testing though, just first CUDA version.
by IvanG
Thu May 07, 2009 5:46 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RAR archive encription
Replies: 27
Views: 31251

Re: RAR archive encription

calclCompile() just assembles shaders to obj- interesting why it takes so much time to put CALL/RET in code calclCompile() not "just assembles" it, in fact, trying to agressively optimise everything. Check out code produces by brook+ -- it simply terrible. If you'll write a = b + 5 + 5; it'll be co...
by IvanG
Thu May 07, 2009 12:58 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RAR archive encription
Replies: 27
Views: 31251

Re: RAR archive encription

BarsMonster wrote:I was asking at AMD forum why It takes ~1-2 seconds to execute first call :-)
And it was me who replied why ;)
by IvanG
Thu May 07, 2009 12:53 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RAR archive encription
Replies: 27
Views: 31251

Re: RAR archive encription

kernel for every pass length-terrible. If you want to get good speed -- it's the only way possible. Pavel's crark's performance suffer because he doesn't pay attention to this thing ;). My implementation is very close to theoretical limits of GPU. execution of calclCompile()- takes 1+ hour o 8 gb m...
by IvanG
Thu May 07, 2009 10:55 am
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RAR archive encription
Replies: 27
Views: 31251

Re: RAR archive encription

why don't you want to compile al the stuff with calclCompile() for different cores? why r700, only? There are two reasons: 1. Kernel compilation takes A LOT of time and (more important) memory. And there is kernel for each possible length == 16 kernels to compile. I'm working on 8Gb system and this...
by IvanG
Wed May 06, 2009 12:53 pm
Forum: BarsWF, Cryptography, Security, GPGPU and supercomputing
Topic: RAR archive encription
Replies: 27
Views: 31251

Re: RAR archive encription

First RAR cracker for ATI HD 48xx GPUs can be found here: http://golubev.com/rargpu.htm.

Shortly, HD4850 about 19x times faster than single core of Q6600 @ 2.4Ghz. There no CUDA version yet and basically program is just "proof of concept". But can be used in many situations ;).