[hashcash] Re: SHA-1 Broken - from the sha-na-na dept.
- From: hal@xxxxxxxxxx ("Hal Finney")
- To: hashcash@xxxxxxxxxxxxx
- Date: Wed, 16 Feb 2005 09:22:35 -0800 (PST)
Keep in mind that hashcash is not based on hash collisions. It uses
partial pre-images of zero (meaning, strings whoses hashes are close to
the all-zero string). Most commentators agree that the new techniques
will not work to find pre-images. Chances are that means they will not
be able to accelerate finding partial pre-images either.
Hal Finney
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