Re: Digitally Signed Outputs

[Stephan Meijer <me-nPKYAObcRdo6Blr+0TYHagC/G2K4zDHf@public.gmane.org>]

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Also see https://github.com/opensignature/pdfsign

On Wednesday, 10 May 2023 at 02:30:14 UTC+2 Stephan Meijer wrote:

> You might even be able to sign any existing PDF documents using just 
> openssl .
>
> On Wednesday, 10 May 2023 at 02:24:05 UTC+2 Stephan Meijer wrote:
>
>> Please keep in mind that when people are able to hack into your CI 
>> pipelines, they can still tamper anyway.
>>
>> Maybe you can sign the PDF after generating it? Maybe take a lookt at 
>> https://pypi.org/project/endesive/
>>
>> On Tuesday, 9 May 2023 at 23:08:19 UTC+2 Malcolm Nixon wrote:
>>
>>> Yes, PDF/A (when combined with a digital signature such as PAdES) looks 
>>> to be ideal in creating long-term tamper-resistant artifacts such as 
>>> release notes or test reports in CI pipelines.
>>>
>>> I found the PDF/A documentation and tried giving it a shot; however it 
>>> looks like it only works with the ConTeXt engine, and the pandoc docker 
>>> images only come with LaTeX.
>>>
>>> I might have to take a diversion and look into docker ;)
>>>
>>> Many thanks,
>>>
>>>     - Malcolm
>>>
>>> On Tuesday, May 9, 2023 at 6:52:19 AM UTC-4 Stephan Meijer wrote:
>>>
>>>> With digitally signed, do you mean PDF/A?
>>>>
>>>> Pandoc has some info about it on their FAQ: 
>>>> https://pandoc.org/faqs.html#how-can-i-produce-pdfa-with-pandoc
>>>>
>>>> Hope I was of any help.
>>>>
>>>> Stephan
>>>>
>>>> On Tuesday, 2 May 2023 at 00:42:57 UTC+2 Malcolm Nixon wrote:
>>>>
>>>>> Greetings all,
>>>>>
>>>>> I'm looking to use Pandoc to generate digitally-signed PDFs from a CI 
>>>>> workflow - specifically the digital signature would be evidence that the 
>>>>> document hasn't been tampered with.
>>>>>
>>>>> While the underlying Miktek PDF generator has a "digsig" package, it 
>>>>> looks like Pandoc doesn't have any command-line options for triggering the 
>>>>> signing of the output.
>>>>>
>>>>> Am I missing something in the documentation (such as some means of 
>>>>> specifying custom miktek extensions). 
>>>>>
>>>>> Many thanks,
>>>>>  - Malcolm
>>>>>
>>>>

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