Code Signing Certificates

In order to sign my kernel code and distribute it I require a code signing certificate from a trusted certificate authority.

Do not bother with Certum, it won't sign kmdf projects...
So i've found that certum offer a low cost option for open source code signing at around 17 euros. So after some language barrier issues i've finally got their public key for ccp@certum.pl so that I can encrypt the documents they require for verification.
But honestly I can't say they offer the best customer service and could do with improving.

I have base64 encoded the certificate file for ccp@certum.pl below using notepad++;

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


you will also need the root certificates again below base64 encoded;

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

The next thing I needed was gpg4win so that I can encrypt my documents.
Download it from http://files.gpg4win.org/gpg4win-2.3.0.exe and install.

Open kleopatra and goto 'settings' > 'configure kleopatra' > 's/mime validation' and tick 'never consult CRL' and apply.
We do this because certum supplied certificates that failed this check.

Next you need to copy each base64 section into notepad++(plus plus) as new document and then > 'plugins' > 'mime tools' > 'base64 decode' which should then look like garbled text, and then save the files with a .p7s extension.

back in kleopatra we import these certificate files.

Now you should be able to right click a file > 'sign and encrypt'
leave default 'encrypt' selected click next.
select ccp@certum.pl and click add, then click encrypt.
click continue at the warning.
it should say encryption suceeded, click finish.

if it fails open a command prompt and try a command similar to below to get verbose output.

C:\>gpgsm --recipient "ccp@certum.pl" --output "C:\certum\test.pdf.p7m" --encrypt "C:\Certum\test.pdf"

.....To be updated once I receive certificate the details of how to apply it to my project....

Looks like certum don't allow open source kernel code signing. so I've found a commodo reseller offering them for £49 plus vat but the snag is they need the documents signing by notary so that's another £60+ at least.

Will update if I ever get past this obstacle :(

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