UK Friendly for e-commerce?

Ian G Batten I.G.Batten at ftel.co.uk
Mon, 20 Mar 2000 08:23:28 GMT


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> be aware that PGP 6 included new features allowing separate management of=
=20
> the D/H encryption keys from the DSS signature keys within a DSS/DH=20
> keypair.  Now I know that not everyone uses PGP, let alone its DSS/DH=20
> keys, but this does mean that you can set up one or more signature-only=
=20

I may be wrong, but I don't think this helps.  A DSS public key requires
a prime, p, a base g which is derived by a complex relationship, q which
is a factor of p-1 and y which is g^x mod p.  X, the private key, is a
random number less than q.

El Gamal encryption requires a prime p, an arbitrary g, a y=3Dg^x mod p.
X, the private key, is a random number less than p.

Why can't I just use my DSS keys as El Gamal keys?

ian

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