On Fri, 24 Aug 2007 20:06, [EMAIL PROTECTED] said:

> Do hash firewalls have any drawbacks (performance decrease, difficult to
> implement, patent issues etc.)? What's the reason DSA doesn't have one?

DSA ist the signature algorithm used with DSS, the Digital Signature
Standard.  DSS requires the use of DSA along with SHA-1 as the hash
algorithms.  Similar provisions have been setup for DSA1 i.e. the
combination of certain key sizes with certain hash algorithms.  Thus
there is no need for the hash firewall.

OpenPGP OTOH allows to use any suitable hash algorithms with DSA.


Salam-Shalom,

   Werner


-- 
Die Gedanken sind frei.  Auschnahme regelt ein Bundeschgesetz.


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