Date: Thu, 15 Dec 2011 17:51:14 +0530 From: piyush mittal <piyush.cse29@...il.com> To: john-dev@...ts.openwall.com Subject: Re: Bit slice implementation of DES based hashes Hello Everyone, In File DES_bs_b.c Three methods are given i.e 1,DES_bs_crypt_LM() 2.DES_bs_crypt_25 3.DES_bs_crypt() The first two is specific to Lm and Traditional DES respectively.First one calls the S-boxes in ECB mode and for second one I don't know.Third one i hope don't use any mode.However in oracle_fmt_plug.c conversion we need CBC mode so how to call S Boxes in this case? Thanks, On Mon, Dec 5, 2011 at 9:08 PM, Simon Marechal <simon@...quise.net> wrote: > On 05/12/2011 16:27, piyush mittal wrote: > > # The user’s ASCII <http://en.wikipedia.org/wiki/ASCII> password is > > converted to uppercase <http://en.wikipedia.org/wiki/Uppercase>. > > This is susceptible to the same problem as the widechar conversion for > Oracle. In the case of LM hashes, all possible cases have been > documented by HSC for french accents here : > > > http://www.hsc.fr/~lehembre/breves/rainbowtables/rainbowcrack-1.2-french-accents-HSC.diff > > I'm not sure how much more is needed to cover the whole input set. LM > hashes for some input values are simply not generated, which could lead > to an optimization. The exact rules are unknown to me. > > For Oracle, implementing in a naive way (interleaving 0's between chars) > will not work for non ascii values. I believe proper unicode conversion > libraries are now included in JtR jumbos, but I have no clue on how they > work. > > > -- Piyush Mittal M.Tech SEM-Ist Department of Computer Science and Engineering National Institute of Technology,Rourkela INDIA Email. piyush.cse29@...il.com 211cs2281@...rkl.ac.in Mob. +91 8260859399 Content of type "text/html" skipped
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.