2 Replies Latest reply on Aug 20, 2008 7:00 AM by (Suzanne_Cole)

    Problem showing certificate properties from signed PDFs

      I'm signing two PDF files with two distinct signatures.
      When performing the following operation in Adobe Acrobat Reader 8 we obtain different results:

      Signatures, right button on top of "Signed By ...", Show Signature Properties, Show Certificate

      With one of the PDFs that's possible and we can see the certificate properties, with the other we cannot see the properties of the certificate and Acrobat Reader crashes.

      The main differences between the certificates are:

      Certificate with good results:

      Basic Constraints: "Subject Type = End Entity
      Path Length = None Constraint "
      Key Usage: Digital Signature, Non-Repudiation, Key Encipherment, Date Encipherment, Key Agreement (f8)

      Certificate with bad results:

      Basic Constraints: "Subject Type = End Entity
      Path Length Constraint = None "(Critical X.509 Version 3 extension)
      Key Usage: Digital Signature, Key Encipherment, Encipherment Date (b0 00) (Critical X.509 Version 3 extension)

      Is Adobe Acrobat Reader capable of obtainning a signature property that has Critical Extensions?

      Thanks for any help.