Date: Thu, 24 Jan 2013 11:03:22 +0100 From: Frank Dittrich <frank_dittrich@...mail.com> To: john-dev@...ts.openwall.com Subject: Re: Supporting different hash algorithms with a single format? On 01/24/2013 10:44 AM, Dhiru Kholia wrote: > On Thu, Jan 24, 2013 at 3:07 PM, Frank Dittrich > <frank_dittrich@...mail.com> wrote: >> Is the performance of the different PDF algorithms more or less the >> same, so that it would be OK to map "PDF MD5 RC4" to "PDF MD5 SHA-2 RC4 >> / AES" in benchmark-unify? >> Or should these be separate formats? > > IMO, these should be separate formats. The newer pdf format being > slightly faster, OMP friendly and less buggy than the older one. The question is not if the jumbo-8 implementation is faster than jumbo-7 (may be due to OMP support) or not, but whether the different algorithms currently implemented in jumbo-8 should have separate benchmark numbers, because they will very likely be different. If there should be several PDF formats instead of just one, I suggest doing the change before releasing jumbo-8. (No need to split this into different source files or to create different object files. Just one file which defines 2 format structures (using different test vectors, slightly different valid() functions, and reusing everything that's similar enough is OK.) FRank
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