Add the Root Certificate on Adobe Trusted Identities Some of the Root CA's are included by default in Windows Certificate Store (Trusted Root Certification Authorities) and only a few are included in Adobe Trusted Identities. Valid Signature - Validating Digital Signatures in Adobeħ 2. Validating Digital Signatures in AdobeĦ When the document is re-opened, the digital signature is considered valid. Validating Digital Signatures in Adobeĥ After you check that your Roor Certificate is installed, in Adobe Reader go to Edit menu Preferences option Security tab click on Advanced Preferences button Windows Integration tab and check all checkboxes. As an alternative, the recipient must manually add the Root Certificate of the signing certificate on Adobe Trusted Identities because only a few Root CA's are considered trusted by default by the Adobe certificate validation engine (See this article: The digital signature in not trusted - Validating Digital Signatures in AdobeĢ The digital signature is not trusted - Validating Digital Signatures in AdobeĤ You can also import your Root Certificate here. The user can validate the signature if the Root CA is already installed on Microsoft Certificate Store (see the section Validate the Signature using Windows Integration). PDF Signer, Adobe Reader) but with the Adobe certificate validation procedure.
This behavior has nothing to do with the signing engine (e.g. If the Root CA that issued the signing certificate is not included in Adobe Trusted Identities, the digital signature is considered "not trusted" (but NOT invalid) when the document is opened in Adobe Reader (see example below). 1 Validating Digital Signatures in Adobe Table of Contents Validating Digital Signatures in Adobe Validate the Signature using Windows Integration Add the Root Certificate on Adobe Trusted Identities Export/Import the FDF (Acrobat Forms Data Format) Validate Adobe Timestamps Other Validation Settings.23 Usually, the digital certificates are issued by a Root CA (Certification Authority).
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