DSA = DSS?
Sat, 12 Aug 2000 02:05:24 -0400
On Fri, Aug 11, 2000 at 06:37:14AM -0700, L. Sassaman wrote:
> On Fri, 11 Aug 2000, John Bacalle wrote:
-snip GnuPG/PGP can exchange DSA/DSS messages?-
> For some reason, the encryption subkey in PGP is called "DH". It's really
> ElGamal Encryption (ELG-E).
> The [digital signature] algorithm used in PGP is DSA, [the]
> hash is SHA-1.
(Thanks to Werner and yourself I have a better understanding of things
now. Much gratitude! I need to explicitly clarify, though.)
So, if PGP does DSA-SHA1 (but, calls it DSS - fine), and GnuPG does the
same (it's the default --gen-key option afterall), therefore both can fully
inter-operate in this pubkey format?
> [To GPG<->PGP] just disable that ELG support, and add the RSA and IDEA
> modules (provided it's leagal where you are).
(DSA/DSS)SHA1 Y Y
ELG-E/DH Y Y
ELG Y N
RSA N* Y
IDEA N* Y
* It is Y(es) if the module/patch available is applied.
I am already aware that GnuPG can do RSA (although can it also generate
RSA keys after patching?), but rather I was more wondering how firm was the
inter-operation of the newer pubkey/signkey formats between the two
Thus, it appears to me at this point that if I use the default GnuPG
--gen-key option (DSA + ELG-E w/SHA1) I will be just fine communicating
with PGP 5/6 users.
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