Don't do it for any random certificate as this can be a security issue and is not actually required if you just want to view the PDF. You can add the certificate that was used to apply the digital signature into Adobe's list of Trusted Identities by following these steps:.
What he is missing a certificate and only you can provide him with a copy of the certificate you created to sign the PDF. After you send him or make available a copy of the certificate, then your coworker will need to import that certificate into his copy of Acrobat. I have a root CA and an intermediate CA. The cert I am trying to use is issued by the intermediary CA. I can sign the pdf fine using the cert but when another user opens the document I get the error "At least one signature has problems".
In the Signature Panel I see " Signer's identity is unknown because it has not been included in your list of trusted identities and none of its parent certificates are trusted identities ".
It appears to me I need to add either the root or intermediary CA as a trusted identity. However, when I try to add it, neither certificate appears in the list from which to choose. I'm unsure where the certs in this list are being pulled from as they don't seem to match what I see in an of the stores.
I've found some info around the net on this issue but I haven't been able to pull it all together. This gets a bit complicated as there are two parts to the story.
First is signature creation a one time event and the second part is signature validation a many time event. When you create the signature Acrobat or Reader will at a minimum always add the certificate that corresponds to the digital ID used to create that signature. It will also add all of the certificates in the signing chain if it can find them.
The next question is where does it find the certificates. It will look in a lot of places including the digital ID used to sign, in the Acrobat Manage Trusted Identities list, in the Windows Certificate Store or the Mac Keychain, in the Acrobat CertCache folder, other signatures, other digital IDs, known hardware devices and possibly online. The first thing it does is look to see if it can find the certificate that issued the signer's digital ID, and then recursively looks for the next issuing cert until it either finds a self-signed certificate or just can't find it.
Trust is not something the signer can imbue the signature with, but rather it is something granted by the person that is validating the signature. However, as part of the signature creation process, if you want to embed the revocation information so as to provide for long term validation you should have your system configure so that Acrobat can build the chain up to a trust anchor because without trust being established Acrobat will not do revocation checking, and without revocation checking being done as part of the signature creation process there will be nothing available to embed.
Adobe Reader will display the Signature Properties window. Step 7. It will open the Certificate Viewer window to view the details of a certificate. Step 8. From the Certificate Viewer window, click on the Trust tab. Step 9.
Step Are you sure you want to do this? Click on the OK button if you trust the source. Otherwise, stop to continue to the next steps.
Click on the Close button to close the Signature Properties window. Now the signature is trusted and validated. Now the PDF document is validated. You need to select the Certification paths. It should work. I want to read more issues about it! Save my name, email, and website in this browser for the next time I comment. Skip to content CodeSteps January 13, November 20, Adobe , Adobe Reader adobe reader , certificate viewer , import contact settings , pdf signature problem , signature panel , signature properties window , trusted identities , validate signature.
How to add favicon into Drupal based website? I downgraded to the previous version of Acrobat Reader DC: Is it necessary to do downgraded to the previous version of Acrobat Reader DC: Adobe released an update to Adobe Acrobat Reader that addresses an incorrect error message associated with a valid digital signature. Please ensure that you update the application to the latest version.
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It says: There are errors in the formatting or information contained in this signature Signer's identity is valid Signing time is from the clock on the signer's computer Signature is LTV enabled Under the Certificate Details, if I click on Trust, all options are checked green so it is a trusted certificate. General troubleshooting, PDF forms, Security digital signatures and esignatures. Follow Report.
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