[MlMt] PGP encrypt with mismatched key

Robert Goldman rpgoldman at sift.net
Mon Jan 13 10:25:10 EST 2025


If it helps, I am on MacOS 14.7.1 and have my gpg from Homebrew, gpg 
(GnuPG) 2.4.7

I'm pretty hazy on the distinction between fingerprint and key-id, so I 
might have gotten that wrong.  I just checked, though, and the hex 
numbers in my gpg.conf are *not* fingerprints.  I believe the numbers 
are key-ids, but the PGP/GPG jargon is thick and mysterious to me 
(don't get me started on the *n + 1* different meanings of "trust" they 
use), and show-keys identifies the fingerprint, but not the other 
attributes of a key.

On 12 Jan 2025, at 23:48, Pete Resnick via mailmate wrote:

> I tried this (as well as the KeyMapping described on 
> https://gpgtools.tenderapp.com/kb/how-to/add-email-address-to-existing-public-key-domain-mapping-group-feature) 
> and still no luck; it's not finding the key. I tried both the key-id 
> and the fingerprint (the docs on the gpgtools site say fingerprint, 
> not key-id), and it still can't find it. Using MM 6208 on Sequoia 
> 15.1.1 and GPG Suite 3579n. Any other ideas?
>
> pr
> -- 
> Pete Resnick https://www.episteme.net/
> All connections to the world are tenuous at best
>
> On 12 Jan 2025, at 14:47, Robert Goldman wrote:
>
>> Yes, this can be done by configuring GPG appropriately.  This is the 
>> same configuration that you need to do in order to PGP encrypt to a 
>> mailing list, where you need GPG to know that it must encrypt the 
>> email to each of the PGP keys of the recipients.
>>
>> You can do this:
>>
>> ```
>> group <email address> = <key-id>+
>> ```
>>
>> Best,
>> R
>>
>>
>>
>> On 11 Jan 2025, at 14:54, Pete Resnick via mailmate wrote:
>>
>>> Is it possible to send a message to user at example.com that is PGP 
>>> encrypted with the key of user at stupid.test? For "reasons", 
>>> user at example.com is not listed as one of the alternate addresses in 
>>> the key for user at stupid.test.
>>>
>>> pr
>>> -- 
>>> Pete Resnick https://www.episteme.net/
>>> All connections to the world are tenuous at best
>>> _______________________________________________
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