On 8 Jun 2019, at 15:02, Randy Bush wrote:

a gpg encrypted message arrives.  i try my default key and fail.  i
realize the sender has encrypted to a different key.  i can not figure
out how to get mm to let be retry the decryption.

clue?

Can this even be a thing???

It seems (based on what I see in the "Show Details" display of MM for encrypted messages) that an encrypted message carries metadata about which keys it is encrypted to, so GPG (called by MM ) is not going to try the wrong key. For example, here's what a recent message's "details" were:

ENC_TO D62C868FA61CAFA9 1 0
ENC_TO FD844AB0476CD12E 16 0
KEY_CONSIDERED 83EB18298975A0BBD8578A52DACD422676ABC38C 0
PINENTRY_LAUNCHED 38376 mac 1.1.0 - - -
KEY_CONSIDERED 83EB18298975A0BBD8578A52DACD422676ABC38C 0
DECRYPTION_KEY BC83DEE8C839B9F55D6EE253FD844AB0476CD12E 83EB18298975A0BBD8578A52DACD422676ABC38C u
KEY_CONSIDERED 1D77E507FB3967DFF4AFCA79AC49A3964DD8597D 0
NO_SECKEY D62C868FA61CAFA9
KEY_CONSIDERED 83EB18298975A0BBD8578A52DACD422676ABC38C 0
BEGIN_DECRYPTION
DECRYPTION_INFO 2 9
PLAINTEXT 74 1557324053
DECRYPTION_OKAY
GOODMDC
END_DECRYPTION

The "ENC_TO" lines are the key IDs of sub-keys for the one o0f sender's keys and one of mine. GPG finds both key IDs in my keychain, but only has a secret key for mine, which it uses for decryption.

--
Bill Cole
[email protected] or [email protected]
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
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