[MlMt] GPG Encryption + Signing

[Eric Sharakan]

I did search the keyserver using your name, and the key wasn't found, 
but when I searched by your email address, it did find and download it.

-Eric

On 24 Apr 2022, at 17:36, Stephan Bösebeck wrote:

> 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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