Use other hash than SHA-1

[Allen Schultz]

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On Sat, May 2, 2009 at 7:45 AM, David Shaw
<dshaw at jabberwocky.com> wrote:
> The short answer is that you can only use a 160-bit hash with
your default
> DSA key.  That means SHA-1 or RIPEMD/160.  There is a feature
you can enable
> (--enable-dsa2) that will allow you to use a bigger hash --
but you can
> still only use 160 bits worth of it.  So if you use SHA-256,
you're actually
> only taking 160 bits worth of it and discarding the rest.

I'm stuck with that smaller key until I change the subkeys, but
a question about the two hashes. What's the difference in SHA-1
and RIPEMD/160?

Allen


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