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    Thread: need help with sha512
Post: RE: need help with sha512
yes, i mean hardware. the problem is sha512 requires much more vram than the other hash types, hence the out of resources error.
 epixoip Very old oclHashcat-lite Support 23 49,309 07-08-2012, 02:11 PM
    Thread: need help with sha512
Post: RE: need help with sha512
sha512 hashes in linux shadow file is actually sha512crypt, not raw sha512.
 epixoip Very old oclHashcat-lite Support 23 49,309 07-08-2012, 03:33 PM
    Thread: need help with sha512
Post: RE: need help with sha512
undeath Wrote: (07-08-2012, 04:59 PM) -- no. crypt uses PBKDF2. -- you're thinking of pbkdf2-hmac-sha512, like what grub uses. sha512crypt doesn't use pbkdf2. sha512crypt is actually based on md5cr...
 epixoip Very old oclHashcat-lite Support 23 49,309 07-09-2012, 05:22 AM
    Thread: need help with sha512
Post: RE: need help with sha512
undeath Wrote: (07-09-2012, 12:32 PM) -- as far as i know [md5]crypt in fact uses PBKDF2. -- no sir.
 epixoip Very old oclHashcat-lite Support 23 49,309 07-09-2012, 08:43 PM
    Thread: need help with sha512
Post: RE: need help with sha512
Please understand sha512crypt, aka SHA512(Unix), is *not* simply salted sha512. The "hex string" generated by Cain's Hash Calculator is just a raw sha512 hash, and is completely different -- and in no...
 epixoip Very old oclHashcat-lite Support 23 49,309 07-10-2012, 01:05 PM
    Thread: BCrypt + GTX670 = 6 c/s?
Post: RE: BCrypt + GTX670 = 6 c/s?
wflme Wrote: (01-16-2013, 08:21 PM) -- The hash in question starts with $2a$12$. I'm not sure what to make of it, bcrypt-wise, since I never dealt with it before. Looking at that 12 pretty much means...
 epixoip Very old oclHashcat-plus Support 23 52,580 01-16-2013, 08:41 PM
    Thread: BCrypt + GTX670 = 6 c/s?
Post: RE: BCrypt + GTX670 = 6 c/s?
wflme Wrote: (01-16-2013, 07:59 PM) -- Edit: would try to run it through the bruteforce, but for the life of me I can't figure the exact syntax, as opposed to oclHashcat-lite. Tried everything by the...
 epixoip Very old oclHashcat-plus Support 23 52,580 01-16-2013, 08:38 PM
    Thread: oclHashcat new features / algorithms
Post: RE: oclHashcat new features / algorithms
This list looks very familiar :P
 epixoip Organisation and Events 23 52,609 10-08-2014, 07:09 PM
    Thread: oclHashcat new features / algorithms
Post: RE: oclHashcat new features / algorithms
If I could vote twice I'd vote for both Adobe PDF and Apple DMG
 epixoip Organisation and Events 23 52,609 10-08-2014, 07:20 PM
    Thread: Is my plan a good idea?
Post: RE: Is my plan a good idea?
It's a really bad idea, all you're doing is wasting disk space. And if you have a 100 GB wordlist, you're doing something very, very wrong.
 epixoip General Talk 23 40,657 12-28-2014, 09:29 PM
    Thread: Is my plan a good idea?
Post: RE: Is my plan a good idea?
First, GPU is irrelevant for what you are talking about doing. CPU is faster than GPU for the algorithms you would be able to generate tables for, since it's impossible to gain any acceleration perfor...
 epixoip General Talk 23 40,657 12-28-2014, 11:48 PM
    Thread: Is my plan a good idea?
Post: RE: Is my plan a good idea?
GPU makes sense -- as I said, you should not be running straight wordlist attacks against fast hashes on GPU. However, there shouldn't be that much of a drop between single hash and multihash on CPU. ...
 epixoip General Talk 23 40,657 12-29-2014, 12:19 AM
    Thread: Is my plan a good idea?
Post: RE: Is my plan a good idea?
Rainbow tables don't actually store the hash value, they store hash chains using a reduction function. So you still have to do quite a bit of calculation and false-alarm checking to look up a hash in ...
 epixoip General Talk 23 40,657 12-29-2014, 09:29 AM
    Thread: Is my plan a good idea?
Post: RE: Is my plan a good idea?
Hard drive and RAM can both be a bottleneck, yes. You also have to take into consideration startup & shutdown time, there is overhead there where you are not doing any cracking. I had never rea...
 epixoip General Talk 23 40,657 12-29-2014, 10:28 PM
    Thread: Is my plan a good idea?
Post: RE: Is my plan a good idea?
65 MB/s is pretty slow, but not atypical of a laptop with a spinny disk. For this task RAM quantity is not quite as important as RAM speed, and perhaps even more important than that is NUMA-aware s...
 epixoip General Talk 23 40,657 12-29-2014, 10:55 PM
    Thread: Is my plan a good idea?
Post: RE: Is my plan a good idea?
That's not quite what I meant, though that is one approach. I imagine this doesn't scale very well though, and that's likely why most "hash cracking websites" limit you to 10-15 hashes.
 epixoip General Talk 23 40,657 01-02-2015, 01:26 AM
    Thread: Is my plan a good idea?
Post: RE: Is my plan a good idea?
They're bad because straight wordlist attacks aren't usually high yield, which has been my point through this whole thread.
 epixoip General Talk 23 40,657 01-02-2015, 01:41 PM
    Thread: Distributed Computing for cracking a long passwd
Post: RE: Distributed Computing for cracking a long pass...
oclhashcat cannot crack passwords > 16 chars.
 epixoip Very old oclHashcat-lite Support 22 46,751 07-09-2012, 04:44 AM
    Thread: How do I crack substr hash?
Post: RE: How do I crack substr hash?
hashcat does not support anything like that. however, there are only 2**32 possible combinations, so there's a 50% chance you'll find a collision after 77k attempts, and a 75% chance after 110k attem...
 epixoip Old hashcat Support 22 44,516 01-22-2013, 12:19 PM
    Thread: How do I crack substr hash?
Post: RE: How do I crack substr hash?
no, i mean write your own program or script that will generate a collision. it doesn't have to be very fast or efficient because you are likely to find a collision in only 110,000 guesses when compari...
 epixoip Old hashcat Support 22 44,516 01-25-2013, 05:57 PM