Binding of an encryption key to an e-mail address

[Annie Yousar]

Hi all,
if a user A has a secret (signing/certification) key K and two e-mail
adresses A1 and A2, the OpenPGP key consists of the following packets:

  * public key K packet
  * user ID A1 packet
  * signature packet over K and A1 signed with K
  * user ID A2 packet
  * signature packet over K and A2 signed with K

Is it possible to create encryption keys E1 and E2 bound respectively to
A1 and A2?

Looking at the packets after E1/E2 creation we got only public key
packets binding E1/E2 to K but not to the adresses:

  * public key E1 packet
  * signature packet over K and E1 signed with K
  * public key E2 packet
  * signature packet over K and E2 signed with K

How to create a signature packet over K, A1 and E1 signed with K in GnuPG?

/Ann.


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