* Neal H. Walfield:
The basic idea is to publish the list of subscribes as an OpenPGP
message. Concretely:
To create a mailing list, the mailing list administrator generates a
new key pair in the usual way.
Associated with the key pair is a list of encryption keys
(Public-Key Packet, tag 6, or Public-Subkey Packet, tag 14). Each
key may optionally be preceded by a user id (User ID packet, tag
13). This list is stored in a signature subpacket with a new
subpacket type.
An existing implementation of this feature uses signature subpacket 10
to specify fingerprints of additional keys to which messages shall be
encrypted, in addition to the user-specified key. It was rejected for
IETF standardization.
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