john-dev - handling different BINARY_SIZE values in a single format

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Message-ID: <CANO7a6ynQvibi1S4+y64kacX4SYWf9XJcEyUkGpT01YXSZmVzw@mail.gmail.com>
Date: Wed, 20 Jun 2012 22:13:07 +0530
From: Dhiru Kholia <dhiru.kholia@...il.com>
To: john-dev@...ts.openwall.com
Subject: handling different BINARY_SIZE values in a single format

Hi,

EPiServer format can crack both SHA1 and SHA256 hashes. However, the
BINARY_SIZE for both these types is different. How can I handle this
situation in cmp_* functions?

Currently, I have the following code which is valid for only SHA1 hashes.

static int cmp_one(void *binary, int index)
{
        return !memcmp(binary, crypt_out[index], 20); /* BUG: lesser
of the two */
}

My proposal is to combine get_binary (standard JtR interface) with
cracked_array approach. Any thoughts?

-- 
Cheers,
Dhiru

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