- Validity unknown digital signature how to#
- Validity unknown digital signature pdf#
- Validity unknown digital signature code#
PS: I know how to bypass the advise screen setting the IE options but this is not a solution for other people. There is also a bar saying the signature has problems.
Validity unknown digital signature pdf#
Why the OS advises with that screen when I try to run my NON malicious app in other machine? When we sign documents with it the computer which signed the documents show it as valid but any other comptuer shows: Signature validity is UNKNOWN. improved The e-invoice certificate-based digital signed PDF (EU qualified certificate) states that all signatures are valid, and finally it has the same behavior as my test e-invoice below.
As the extra layers from before Acrobat 6 are all drawn in the signature appearance in the saved file, you have to clear them. This, by the way, would be the correct thing to do. Right click on the 'validity unknown' icon and click on 'Validate Signature'You will get the signature validation status window, click on 'Signature Properties'.Click on 'Show Certificate.'Verify that there is a certification path named 'NIC sub-CA for NIC 2011, National Informatics centre'. This is how I did my certificate from commandline: makecert -r -pe -a sha1 -n "CN=%Name%" -b "%InitialDate%" -e "%ExpireDate%" -$ individual -sr LocalMachine -ss my -cy authority -# "%SerialNumber%" "%Name%.cer"Īnd this is how I signed my framework 4 application: SignTool sign /f "%Name%.pfx" /p "%Password%" Application.exeĪlso I've added my cert in the signing tab of my project, but I still get the advise screen from Windows. I have no experiences with the Aspose PDF-to-image rendering, but it looks like it probably simply renders the signature appearance as it is in the PDF. The advise says my digital signature is invalid, I don't know why!Ī free digital signature can't be validated? We briefly explain about how to do digital signature in pdf. Youll see the trust chain in the left-hand panel of the 'Certificate Viewer' dialog (if the signing certificate is self-signed it will be the only one. Well, today I have done my own certificate and digital signature, but when I try to open the compiled application in other machine like a VirtualMachine (VBOX) with Win7 I still getting this advise from shared devices (I'll mean from network devices, you know the shared folder of the virtualmachine) Right-click on the signature (either the signature field or in the Signature Panel on the left), select 'Show Signature Properties.' in the drop-down list and then 'Show Signers Certificate'.
Validity unknown digital signature code#
I have spent 3 days reading and testing to understand a little what the hell is all this of digital signatures and code signing, why exists and how to sign my app. the digital signature will only authenticate if the signed data, i.e., document or representation of a document, is unchanged - if a document is altered after.
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