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    Thread: Bitslice DES S-boxes with LOP3.LUT instructions
Post: RE: Bitslice DES S-boxes with LOP3.LUT instruction...

atom Wrote: (07-15-2016, 10:28 AM) -- Quote: -- My first impression is that a < 400 speed boost for 1 high end 3k+ core GPU versus 1 outdated CPU is pretty poor -- There's no such general state...
John Doe hashcat 5 9,855 07-18-2016, 12:43 AM
    Thread: Bitslice DES S-boxes with LOP3.LUT instructions
Post: RE: Bitslice DES S-boxes with LOP3.LUT instruction...

atom Wrote: (07-14-2016, 12:20 PM) -- Bitsliced DES makes sense with brute-force -a 3 mode. Otherwise the register pressure is too strong and your data gets swapped on global memory, making everythin...
John Doe hashcat 5 9,855 07-15-2016, 02:47 AM
    Thread: Bitslice DES S-boxes with LOP3.LUT instructions
Post: Bitslice DES S-boxes with LOP3.LUT instructions

I've been working on implementing a specific algorithm. Everything works, thanks to amongst others, some very useful tips and hints from the forum :) On a Titan X (3072 cores), the algorithm runs ...
John Doe hashcat 5 9,855 07-14-2016, 02:40 AM
    Thread: I'm overlooking something when implementing new algorithm: please help
Post: RE: I'm overlooking something when implementing ne...

atom Wrote: (07-12-2016, 09:26 AM) -- Just a guess: With a key 0xAAAAAAAAAAAAAAAA you do not have to care about Little endian/Big endian, because the key has always the same byte value. Try again ...
John Doe hashcat 5 9,727 07-12-2016, 10:40 AM
    Thread: I'm overlooking something when implementing new algorithm: please help
Post: RE: I'm overlooking something when implementing ne...

epixoip Wrote: (07-12-2016, 05:27 AM) -- Did you remove the cached kernel after rebuilding? -- Yes, by a make clean && make.
John Doe hashcat 5 9,727 07-12-2016, 10:26 AM
    Thread: I'm overlooking something when implementing new algorithm: please help
Post: I'm overlooking something when implementing new al...

Hi, I'd like to implement a DES-based algorithm. After figuring out how coding for oclHashcat works, everything went just fine. Implementation of step one, DES, works. What I did: - Implement ...
John Doe hashcat 5 9,727 07-12-2016, 12:37 AM
  Thumbs Up Thread: void _des_crypt_decrypt?
Post: RE: void _des_crypt_decrypt?

atom Wrote: (07-05-2016, 08:56 AM) -- In DES, for decrypt, you just access the sboxes in reverse. See http://www.scs.stanford.edu/histar/src/pkg/uclibc/libcrypt/des.c how it handles de_keysl[] and en...
John Doe hashcat 4 8,188 07-09-2016, 01:17 AM
    Thread: Mask option: date?
Post: RE: Mask option: date?

rico Wrote: (07-08-2016, 11:36 PM) -- Stick the masks in a mask file: https://hashcat.net/wiki/doku.php?id=mask_attack#hashcat_mask_files -- How will this help? AFAIKS that's automating the problem...
John Doe hashcat 5 9,643 07-08-2016, 11:48 PM
    Thread: Mask option: date?
Post: RE: Mask option: date?

ScAnMaG Wrote: (07-05-2016, 12:43 AM) -- Charset 1: 0123 Charset 2: 01 Charset 3: 12 Charset 4: 90 =================================================== Mask: ?1?d?2?d - For DDMM Only For example...
John Doe hashcat 5 9,643 07-08-2016, 11:28 PM
  Sad Thread: void _des_crypt_decrypt?
Post: RE: void _des_crypt_decrypt?

atom Wrote: (07-05-2016, 08:15 AM) -- For pure DES encryption or decryption you might want to check out the old DES oracle algorithm in -m 3100 -- The old Oracle hashing algorithm only usese DES en...
John Doe hashcat 4 8,188 07-05-2016, 08:43 AM
    Thread: Mask option: date?
Post: Mask option: date?

What would be the best approach to limit the key space of a password that contains a date, e.g. DDMM? Rights now I'm scripting a batch of hashcat command with masks like 0?d0?d 1?d0?d 2?d0?d 3...
John Doe hashcat 5 9,643 07-04-2016, 11:59 PM
    Thread: void _des_crypt_decrypt?
Post: void _des_crypt_decrypt?

I'm working on support for an extra algorithm. The algorithm consists of a few well knows hashing and encryption algorithms. I've successfully implemented most steps, recycling code of a bunch already...
John Doe hashcat 4 8,188 07-04-2016, 11:58 PM
    Thread: Questions about kernels (a0/1/2/3), kernel functions (mXXXXXm/mXXXXXs) and debugging
Post: Questions about kernels (a0/1/2/3), kernel functio...

I'd like to add a new algorithm to hashcat (3.00). It seems to me that e.g. https://github.com/hashcat/oclHashcat/commit/b9eefd9b20d85c16b92106aa90b14d2ac427179c  is a good starting point. I've got...
John Doe hashcat 1 4,567 06-21-2016, 11:38 AM