Date: Wed, 27 Jun 2012 09:56:20 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: bug or false alarm in BSDI format with clang On Fri, Jun 22, 2012 at 07:36:03PM +0530, Dhiru Kholia wrote: > >> DES_key = key & 0x7F; > > Can someone familiar with the format take a look? Testing DES itself > which uses the same code (guessing?) passes with no problems. DES_std_set_key() deliberately makes those reads potentially/sometimes beyond the end of string, for performance reasons. Theoretically, this could result in a crash if the string were at the very end of a page and the next page were not mapped, but in practice what JtR passes to that function is never located like that. This dates back to 1990s when we did not yet have a bitslice DES implementation and thus this non-bitslice DES code was performance-critical. Perhaps I need to change this now. Alexander
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