Re: ElGamal signature encoding

Nicholas Charles Brawn (ncb05@uow.edu.au)
Sat, 4 Apr 1998 09:44:44 +1000 (EST)

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I see you're posting from Germany. Will this product then be free of any
EAR problems?

regards,

Nicholas Brawn

--
Email: ncb05@uow.edu.au 
Nicholas Brawn - Computer Science Undergraduate, University of Wollongong.
On Fri, 3 Apr 1998, Werner Koch wrote:
> Hi,
> 
> I'm the author of the GNU Privacy Guard, a free PGP replacement.
> 
> I'm using ElGamal signatures and wondering what are the advantages of
> packing the Hash into a structure of FF-padding, an ASN-OID and the Hash
> (this is the way PGP does it).  None of the values  aside of the Hash
> are used because the Hash algorithm is known from other fields in the
> packet. The big drawback is, that I have to do the calculation on a (say)
> 1024 bit number instead of an 160 bit number (the Hash) - PGP 5 only uses
> the 160 bit Hash (due to DSA).
> 
> Any comments?
> 
> -- 
> Werner                      (finger gcrypt@ftp.guug.de for info about GnuPG)
> 
> 

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