PGP 6 can't handle ElGamel-only keys

L. Sassaman rabbi at
Mon Jul 17 12:27:42 CEST 2000

Hash: SHA1

PGP Has never, and never will, support ElGamal signing keys. There are too
many known attacks against them, and supporting them would weaken PGP.

Why would you not generate a DSA/ElGamal key instead, if you only intend
to use it for encryption?

On Fri, 14 Jul 2000, Dave Dykstra wrote:

> My corporate security organization generated a 1408 ElGamel-only key with
> gpg to be used only for encryption.  We chose that size as a compromise
> between security and performance.  Unfortunately, we just discovered that
> PGP 6.53 cannot import it.  It can handle a 1408-bit key if it is a
> combined DSA/ElGamel key.  I haven't tried other-sized ElGamel-only keys,
> but I suspect that PGP 6 just can't handle them at all; is that a known
> problem?
> - Dave Dykstra


L. Sassaman

System Administrator                |  "Every window on Alcatraz has
Technology Consultant               |   a view of San Francisco."
icq.. 10735603                      |  
pgp.. finger:// |          --Susanna Kaysen 

Comment: OpenPGP Encrypted Email Preferred.


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