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Message-ID: <CANJ2NMOEijZ0NeF0ZeZHudS6PipzD5H9s8Sm93q8J-=6GNwf3g@mail.gmail.com>
Date: Thu, 12 Apr 2012 17:32:36 +0800
From: myrice <qqlddg@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: Reverse steps for single round sha(sha-1, sha256/384/512)

Hi, Solar, Samuele, all

I just test it with reducing the 80 iterations to 77 in sha512, here is the
result(GTX580, BLOCKS 32, THREADS 512, ITERATION(MAX_KEYS_PER_CRYPT /
KEYS_PER_CRYPT): 128)
Before:
Many salts:     71827K c/s real, 71116K c/s virtual
Only one salt:  27787K c/s real, 27787K c/s virtual

After:
Benchmarking: Mac OS X 10.7+ salted SHA-512 [CUDA]... DONE
Many salts:     74186K c/s real, 74186K c/s virtual
Only one salt:  27787K c/s real, 27512K c/s virtual

~3.3% improvement
Need more iteration reduction.

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