Date: Thu, 09 Feb 2012 10:32:07 +0100 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: Drupal 7 On 02/09/2012 09:10 AM, Solar Designer wrote: > On Thu, Feb 09, 2012 at 11:47:44AM +0400, Solar Designer wrote: >> On Thu, Feb 09, 2012 at 03:15:46AM +0100, magnum wrote: >>> On 01/16/2012 12:12 AM, Solar Designer wrote: >>>> Here's one more: Drupal 7 uses a revision of phpass with MD5 replaced >>>> with SHA-512 and hashes cut at 258 bits (yes, 258 - that's a multiple of 6). >>>> These hash encodings use the $S$ prefix. Perhaps we should support them. >>> >>> I just committed this format. Painfully slow but supports OMP. > Just why is it slower than SHA-crypt-512, though? (With the > current sets of test vectors.) Somehow I thought that the latter with > the default of rounds=5000 actually invoked the SHA-512 compression > function about 17,000 times. So I expected these two to provide very > similar performance. SHA-crypt calls SHA512_Update() 17766 times for 5000 rounds, but sha512_block_dat_order() is only called 5021 times, and that's the slow stuff. > Here's a very minor optimization: > > Patch attached. Thanks, and then we can adjust the crypt_key array like this: View attachment "john-drupal7-opt-2.diff" of type "text/x-patch" (606 bytes)
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.