Signature options

Access signature options from Tungsten Power PDF for Mac > Options > Signatures. It offers four groups, click More in any of the groups to access its further settings.

• Creation & Appearance: Define a method and format to be used when documents are signed and encrypted. Select which information categories should be included. Use the appearance panel to create or delete signatures or modify the appearance.

  • Compatible with Adobe Acrobat: Set Adobe Acrobat to verify digital signatures from your PDF documents. If you deselect it, only other copies of Power PDF can verify your signatures.

  • Default Signing Method and Default Signing Format: Select a default signing method and format.

  • When Signing: Select which items you want to be visible or required in your signatures. You can require a signing reason and/or time stamping information, include contact information and revocation status.

  • Appearance: Duplicate and delete signatures and edit their content in the Configure Signature Appearance dialog box.

• Verification: You can edit verification settings in the Signature Verification dialog box.

  • Select check boxes to have signatures verified when documents are opened (by default on) or flag untrusted signatures (by default off).

  • When Verifying: Specify a default verification method and select which method should be used to verify signatures; this default method or the method specified in the document. In the latter case select how to proceed if no method is specified—be prompted or use the default.

  • Verification Time: Select which time to use for verification: current time, signature creation time, or a time embedded in the signature (for example a time stamp).

  • Verification Information: Specify what to do with the verification information when saving a signed PDF. Select one of the following options:

    • Ask When Adding: When such information is added to a document, Power PDF starts a dialog box to ask.

    • Always: Verification information is saved with the signed PDF document automatically.

    • Never: Verification information is not saved.

  • In the MacOS Integration section, specify whether you want to trust all root certificates stored in Keychain for validating signatures and certified documents. If you want to decide on a case-by-case basis, you should not enable these options.
• Identities: View and manage a list of available digital ID files. See Security settings for details.
• Document TimeStamping: View and manage a list of Time Stamp Servers in the Server Settings dialog box. Select Time Stamp Servers in the left panel to configure (add, remove, modify) settings for time stamp servers. Set a default server so that time stamps are added to all documents you sign.

For more information, see About securing PDF, and Sign / Certify panel.