Few questions

[Markus Gruber]

Hello,
I'm new to GPG and have some questions

1) gpg-pgp5 interoperation.
- I generated a "DSA and ElGamal (default)" key, which is the PGP5 compatzible 
one (am I right?). GPG uses this key for all actions (encrypt, encrypt-sign 
...).
Now I exported the key into a binary-keyfile (armored keys don't get parsed by 
PGP5) and called pgpk -a <keyfile> to add the key to PGP5's keyring:
--------------------------------------------------------
markus at poro:/opt/home/markus > pgpk -a hugo.pgp

Adding keys:

Key ring: 'hugo.pgp'
Type Bits KeyID      Created    Expires    Algorithm       Use
pub  1024 0xA0643A55 1998-07-22 ---------- DSS             Sign only   <--  
sub  1024 0xA268D25C 1998-07-22 ---------- Diffie-Hellman                 
uid  Markus Gruber (This is me) <markus.gruber at ilo.baynet.de>

1 matching key found

Add these keys to your keyring? [Y/n] y

Keys added successfully.
---------------------------------------------------------

PGP5 saves the key for sign-only use, but not for encrypting.

---------------------------------------------------------
markus at poro:/opt/home/markus > pgpe -r 0xA0643A55 test
No encryption keys found for: 0xA0643A55

No valid keys found for any recipients, exiting...
---------------------------------------------------------

When I sign the test file with "gpg --sign -a test", and pass it thru pgp5, I 
get:

---------------------------------------------------------
markus at poro:/opt/home/markus > pgpv test.asc
Opening file "/dev/null" type text.
---------------------------------------------------------

Am I doing something wrong?
How need things to be setup to get full interoperation (encrypt, encrypt-sign, 
sign) working?
I hope I haven't bored you with this potentially stupid question.

2) A passphrase argument
It would be nice, if the passphrase can be passed to gpg as a commandline 
argument in batchmode (like pgps ... -z <passphrase>).
I did not found the possibility yet. It would be easier then to integrate gpg 
into a mailer like exmh.

Thanks for the great work,
Markus

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