[okular] [Bug 406269] New: pdf document with empty signature field is claimed to be signed

[Oliver Sander]

https://bugs.kde.org/show_bug.cgi?id=406269

            Bug ID: 406269
           Summary: pdf document with empty signature field is claimed to
                    be signed
           Product: okular
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: oliver.sander at tu-dresden.de
  Target Milestone: ---

Created attachment 119266
  --> https://bugs.kde.org/attachment.cgi?id=119266&action=edit
File with empty signature form field

The attached pdf file contains an empty signature field.  When opening the
file, Okular shows a blue message box claiming "This document is digitally
signed.", which is not correct.

For the same file, pdfsig shows

Digital Signature Info of: Anzeige_DM_Seite_3_empty.pdf
Unimplemented Feature (0): Unable to validate this type of signature
Signature #1:
  - Signer Certificate Common Name: (null)
  - Signer full Distinguished Name: (null)
  - Signing Time: Jan 01 1970 01:00:00
  - Signing Hash Algorithm: unknown
  - Signature Type: adbe.pkcs7.detached
  - Signature Validation: Signature has not yet been verified.
Unimplemented Feature (0): Unable to validate this type of signature
Signature #2:
  - Signer Certificate Common Name: (null)
  - Signer full Distinguished Name: (null)
  - Signing Time: Jan 01 1970 01:00:00
  - Signing Hash Algorithm: unknown
  - Signature Type: adbe.pkcs7.detached
  - Signature Validation: Signature has not yet been verified.
Unimplemented Feature (0): Unable to validate this type of signature
Signature #3:
  - Signer Certificate Common Name: (null)
  - Signer full Distinguished Name: (null)
  - Signing Time: Jan 01 1970 01:00:00
  - Signing Hash Algorithm: unknown
  - Signature Type: adbe.pkcs7.detached
  - Signature Validation: Signature has not yet been verified.

That looks dubious, too, so maybe the root cause is in poppler.

This happens with Okular from today's git master on Debian testing.

-- 
You are receiving this mail because:
You are the assignee for the bug.