Date: Fri, 17 Aug 2012 19:18:32 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: RAR early reject On 2012-08-17 19:00, Pavel Semjanov wrote: > On 17.08.2012 20:44, Pavel Semjanov wrote: >> On 17.08.2012 19:48, magnum wrote: >>> On 2012-08-17 16:53, magnum wrote: >>>> On 2012-08-17 15:52, Pavel Semjanov wrote: >>>>> -m4, -m5 option really forces PPM code. -m1 to -m3 should force LZ >>>>> code. >>> >>> I can not reproduce this. I create archives (using linux rar 4.00 beta >>> 3) with -m4 and -m5 and debug output shows that first block is an LZ >>> block, unrar.c populates a Huffman table and correctly inflates the >>> data. Maybe second block and on will be PPM? >> >> >> Hmm, you're right. It seems that PPM no longer (or very rarely) used in >> rar 4.x. You need rar 3.x to test ppm. That's why your code passed the >> tests ;-) >> > > Fix: use -mct to force ppm in rar 4.x Thanks, works fine. I had to drop the MaxOrder < 64 constraint. I have files with a correct MaxOrder of eg. 165, that was not cracked until I dropped that. I can send you samples if you like. magnum
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