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Request #26204 md5 challenge
Submitted: 2003-11-11 10:24 UTC Modified: 2003-11-11 12:50 UTC
From: hagman at hotbrev dot com Assigned:
Status: Wont fix Package: Feature/Change Request
PHP Version: Irrelevant OS: All
Private report: No CVE-ID: None
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 [2003-11-11 10:24 UTC] hagman at hotbrev dot com 
Description:
------------
An optional parameter for MD5(), for challenge, this makes it much harder to bruteforce MD5 hashes. Crypt only supports (random) one-way hashes?

Reproduce code:
---------------
The source on this has a javascript version.

http://www.zonline.jamtland.se/login

Expected result:
----------------
more secure hashes.

Actual result:
--------------
i dunno

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 [2003-11-11 12:50 UTC] jay@php.net 
Is this keyed hashes we're talking about here? HMAC-type 
stuff? 
 
The mhash provides what you're looking for. There's also 
an example in the manual in the comments for the mhash 
function for doing keyed MD5 hashes without installing the 
mhash extension. 
 
btw, brute forcing MD5 isn't something that's particularly 
easy, keyed or otherwise.  
 
J
 
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