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Date: Mon, 23 May 2011 06:18:57 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: "excessive partial hash collisions detected" for mskrb5
magnum -
On Mon, May 23, 2011 at 02:05:41AM +0200, magnum wrote:
> On 2011-05-23 01:27, Solar Designer wrote:
> >I think we can add a check for zero binary_size to loader.c - and not
> >print the warning if so.
>
> Yes, that sounds like a better idea.
Here's the change I committed. Please apply it to your tree and test.
I think that in the long run I need to re-work the loader such that it
either uses its own hash functions or does dupe checking per-salt.
--- Owl/packages/john/john/src/loader.c:1.39 Tue Mar 1 08:31:24 2011
+++ Owl/packages/john/john/src/loader.c Mon May 23 06:11:02 2011
@@ -465,7 +465,9 @@
db->options->flags |= DB_NODUP;
break;
}
- if (collisions >= LDR_HASH_COLLISIONS_MAX) {
+ if (++collisions <= LDR_HASH_COLLISIONS_MAX)
+ continue;
+ if (format->params.binary_size)
fprintf(stderr, "Warning: "
"excessive partial hash "
"collisions detected\n%s",
@@ -474,11 +476,13 @@
"(cause: the \"format\" lacks "
"proper binary_hash() function "
"definitions)\n");
- skip_dupe_checking = 1;
- current_pw = NULL; /* no match */
- break;
- }
- collisions++;
+ else
+ fprintf(stderr, "Warning: "
+ "check for duplicates partially "
+ "bypassed to speedup loading\n");
+ skip_dupe_checking = 1;
+ current_pw = NULL; /* no match */
+ break;
} while ((current_pw = current_pw->next_hash));
if (current_pw) continue;
Alexander
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