[MlMt] GPG Encryption + Signing

[Stephan Bösebeck]

Hi Eric,

thanks for checking. But no, you need to open GPG Keychain (part of gpg suite, click on "search for key") and add the key first. My key should be available in most of the keyservers though ;-)

Problem is, that MailMate does not automatically download any keys (how should it?), as this is the job of the GPG Chain.
But this shows, how many hassles you need to go through to actually get this to work. And then it would not work in other email programs :-(

Stephan



On 24 Apr 2022, at 23:30, Eric Sharakan wrote:

> Hi Stephan, I do have GPGSuite installed (2022.1), and your emails generate a red banner at top that says:
>
> OpenPGP: No public key could be found for verifying the message signature
>
> I think that might be part of your problem.
>
> -Eric
>
> On 24 Apr 2022, at 17:21, Stephan Bösebeck wrote:
>
>> Just an addition: when reading my last email in canaryMail for iOS (or Mac) it states "invalid signature".
>>
>>
>>
>> On 24 Apr 2022, at 23:17, Stephan Bösebeck wrote:
>>
>>> Hi Henry,
>>>
>>> because the mail for this mailinglist was not encrypted, it was only signed. So you can check, if the mail was tempered with on the way to you or if it is the same, as I sent it.
>>>
>>> You cannot encrypt an email to more than one recipient with PGP. you'd have to encrypt it for every recipient and send them separately - so GPG/PGP does not work for mailinglists.
>>>
>>> It works using "public key" encryption. In a nutshell, you create two keys, one is private, one is public. With the public key emails can be _encrypted_ for you and only _decrypted_ with the private key.
>>>
>>> It's a bit off-topic. But if you want to know more about that, I'm happy to help ;-)
>>>
>>> Stephan
>>>
>>> On 24 Apr 2022, at 23:12, Henry Seiden wrote:
>>>
>>>> Stephen,
>>>>
>>>> So, why can I read it, without OpenPGP installed?
>>>>
>>>> Respectfully,
>>>>
>>>> Henry Seiden
>>>> - -
>>>> Techworks Pro Co.
>>>> E: info<at>techworkspro<dot>com
>>>> W: http://techworkspro.com
>>>>
>>>> On 24 Apr 2022, at 17:08, Stephan Bösebeck wrote:
>>>>
>>>>> Hi Henry,
>>>>>
>>>>> in your case, the GPG-Support seems not to be installed on your mac. You need to install GPGSuite for GPG to work.
>>>>> if it works, the banner should be green with the text: `OpenPGP: This message is trusted to have been signed by the sender (EMAIL).`
>>>>>
>>>>> So, unfortunately, your error is not related to mine. In my case, MailMate always shows the correct banner. But other Mail-Clients with PGP/GPG-Support show the signature to be false or invalid.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Stephan
>>>>>
>>>>> On 24 Apr 2022, at 23:04, Henry Seiden wrote:
>>>>>
>>>>>> Hey Stephan,
>>>>>>
>>>>>> Funny, but I get the same message in Mailmate on this message, even though it seems I can read (all of) the contents?!?
>>>>>> Your message shows the following banners at top, which says, “OpenPGP unable to locate the command (gpg) needed…” (in red background)
>>>>>> And the banner below that, “Verifying OpenPGP message signature…” (on a yellow background).
>>>>>>
>>>>>> Are these clues to what you are seeing?
>>>>>>
>>>>>> Respectfully,
>>>>>>
>>>>>> Henry Seiden
>>>>>> - -
>>>>>> Techworks Pro Co.
>>>>>> E: info<at>techworkspro<dot>com
>>>>>> W: http://techworkspro.com
>>>>>>
>>>>>> On 24 Apr 2022, at 16:27, Stephan Bösebeck wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> I have some trouble using the GPG encryption support in MailMate. I'll try to explain:
>>>>>>> I created an encrypted email, sent it to me and tried to decrypt it on iOS using different mechanisms, iPGMail and CanaryMail - both worked fine.
>>>>>>>
>>>>>>> I tried the same with an encrypted and signed Email and both tools told me, the signature could not be verified... Mailmate itself tells, all the signature is valid.
>>>>>>>
>>>>>>> Does anybody have the same issue and/or some solution? It is not really pressing, but I'd like to use encryption / signature more often if possible...
>>>>>>>
>>>>>>> Cheers,
>>>>>>>
>>>>>>> Stephan
>>>>>>> _______________________________________________
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>>>>>>> mailmate at lists.freron.com
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