On Fri, Sep 3, 2010 at 10:29 AM, Jack Lloyd <ll...@randombit.net> wrote: > On Fri, Sep 03, 2010 at 09:45:20AM +0100, Ben Laurie wrote: > > ...narrow-pipe designs have a huge null space for messages > which are exactly as big as the compression function input > size. For instance hashing inputs that are multiples of 512 bits, > SHA-256 will only produce about 63% of the possible 2^256 > outputs. > So we deal with SHA-255.33 instead of SHA-256. Not a big enough difference to worry about. ---- -Michael Heyman
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