When encrypting a message to a recipient address,
Mixmaster is pulling the cipher prefs and feature flags
from the primary key-id, rather than the key-id that
matches the email address. Per RFC 2440, OpenPGP
clients should honor the cipher prefs that are contained
in the self-signature on the UID being referenced.
Test case:
Create a key with two user-ids. The first, and primary,
user-id has cipher preference of 3 (CAST5). The second
has cipher pref of 7 (AES-128).
Place this key on your mix client keyring.
Compose mail to the address in the second uid, and
select pgp encryption. Mail will be encrypted using
CAST5.
* Other possible problems to check: does Mixmaster
honor primary UID flags, or does it get primary UID
based on order of packets?
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