Does the Aspose.PDF toolkit support the creation of a PDF that has a Adobe Certified Document Services banner at the top of the PDF? If so, can you point to any code samples that can generate the PDF?
Hi John,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
I am afraid your requested feature is not supported at the moment with Aspose.Pdf for .NET. However, I have requested our development team to look into this feature and see if this can be support. I have created an issue in our issue tracking system with issue id: PDFNEWNET-30310. You will be notified via this forum thread regarding any progress on this issue.
Sorry for the inconvenience,
Hello John,
We have further investigated this requirement and have come to following conclusion. Here http://www.adobe.com/security/partners_cds.html we can find what CDS means:
CDS is the first broad implementation of document validation technology based on public key infrastructures (PKIs), and now anyone using Adobe Reader® or Acrobat® (version 6.0 or later) software can easily take advantage of it. While digital signatures have been available for a while, a service that automatically certifies documents from a trusted authority is new. With non-CDS signatures, a user must explicitly “trust” the author of a document. With CDS signatures, trust is built into Adobe Reader and Acrobat — no additional software download or configuration is required by the recipient of a certified document to validate its authenticity.
Please pay attention on the sentence in bold. CDS just means several organizations (they are listed at http://www.adobe.com/security/partners_cds.html, they are certificate authorities) have good business relations with Adobe and Adobe embedded in its products the ability to trust certificates from these organizations.It’s just the question in trusting, something like Adobe automatically confirms that certificates from these authorities are those one can trust. However user can make simple action in order certificates from other authorities will be ok: adding CA certificate in the list of trusted certificates solve the problem (menuSecurity Settings…).
Conclusion. Any pdf toolkit including Aspose.Pdf doesn’t have to contain special means for the CDS, if user wants to sign pdf document using CDS certificate he should simply obtain one from trusted CAs (the whole list at http://www.adobe.com/security/partners_cds.html) and then use this certificate like any other certificate for signing the documents.