Re: Making a weak Hash stronger until a fix comes along -- concatenation of hash functions...
From: Roger Schlafly (rogersc1_at_mindspring.com)
Date: 09/26/05
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Date: Sun, 25 Sep 2005 21:05:33 -0700
"Max Power" <mikehack@u.washington.edu> wrote:
> Severe limitatations on changing code
> -- modify the SHA or MD5 initial constants, for custom flavours of these
> hashes
A better plan might be to just add 20 rounds to SHA-1. It uses
80 rounds and is only slightly vulnerable, so perhaps increasing
it to 100 rounds will make it secure. The new hash function could
be called SHA-2 or SHA-1a, and would be an easy modification
to existing software.
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