[okular] [Bug 469705] okular does not find any certificate for digital signing

[Philippe ROUBACH]

https://bugs.kde.org/show_bug.cgi?id=469705

--- Comment #30 from Philippe ROUBACH <philippe.roubach at free.fr> ---
>> openpgp certificates are not specified to be used for pdf files.

>> For that we need CMS - https://en.wikipedia.org/wiki/Cryptographic_Message_Syntax - and CAdES -  https://en.wikipedia.org 
>> /wiki/CAdES_(computing) - according to the pdf specification section 12.8. 

>> I have not seen anyone specifying CMS with openpgp keys, only with x509 certificates.

It is too techie for me. What I understand is :
- the pdf standard for digital signing is only using a x509 certificate.
- in the standard, there is no way for digital signing with an OpenPGP
certificate.

Right ?

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