Multi-user gpg-agent question

[Dylan Vaughn]

Hello, 

I am trying to figure out an issue I'm having with gpg-agent.  I have
set up gpg and gpg-agent according to the guides here:

http://www.madboa.com/geek/gpg-quickstart/ 
(for gpg)

and here:

http://www.debian-administration.org/articles/378
(for gpg-agent)

I am running Debian sarge, and using all standard debian packages. 

The issue is that after I start gpg-agent for one user, it does not work
for any other user on my machine.  For example, after I do an initial
decrypt call with:

dylan at dylan:~ $ gpg -o clear.txt -d encrypted.txt.asc

which works fine, i.e. the pinentry-curses program asks me for my
passphrase the first time and gpg-agent uses the cached passphrase on
subsequent decrypt calls, then when I switch to a different user on my
machine and try to do the same thing gpg-agent doesn't prompt me for my
passphrase on the initial attempt and instead gives me this message:

dylan2 at sunbeam:~/test$ eval "$(gpg-agent --daemon)"
dylan2 at sunbeam:~/test$ gpg -o clear.txt -d test.txt.asc

You need a passphrase to unlock the secret key for
user: "Dylan2 Vaughn <dylan2 at vaughnworks.com>"
2048-bit ELG-E key, ID 34FC7CBC, created 2006-08-19 (main key ID
71D43350)

gpg: cancelled by user
gpg: encrypted with 2048-bit ELG-E key, ID 34FC7CBC, created 2006-08-19
      "Dylan2 Vaughn <dylan2 at vaughnworks.com>"
gpg: public key decryption failed: bad passphrase
gpg: decryption failed: secret key not available

However, I can do the normal encrypt / decrypt stuff with the root user
after doing it the first time with my 'dylan' user.  Also, if I
initially log into the 'dylan2' user account after rebooting, I can do
the encrypt / decrypt with that user but then not any others (except
root).  

What am I doing wrong?  Any help would be appreciated.  

Thanks, 

Dylan

-- 

Dylan Vaughn -- CEO
Vaughn Works, Inc.
dylan at vaughnworks.com