Date: Thu, 24 Jan 2013 16:49:20 +0100 From: Frank Dittrich <frank_dittrich@...mail.com> To: john-dev@...ts.openwall.com Subject: Re: PDF format incompatibility (jumbo-7 vs. jumbo-8) On 01/24/2013 04:30 PM, Dhiru Kholia wrote: > On Thu, Jan 24, 2013 at 8:53 PM, Frank Dittrich > <frank_dittrich@...mail.com> wrote: >> On 01/24/2013 03:27 PM, Dhiru Kholia wrote: >>> A simple (but probably unpopular) fix is to reject old-style hashes. >> >> I am sure Solar wouldn't call breaking backwards compatibility a fix. > > I was not careful enough to maintain backwards compatibility when I > wrote the new pdf format. OK, but the "$pdf$Standard*" hash should contain all the information required to construct the hash format which is expected by the jumbo-8 valid(), no? If all information is there, it should be possible to write a prepare() function which converts the old-style hash into the new one. Frank
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