You will be prompted to confirm the passwords again. You can save the changes in the open
document or create a new document.
ABBYY PDF Transformer+ allows you to sign documents digitally and to validate any digital
signature in a document. A digital signature, just like a hand–written signature on a paper
document, is used to establish the identity of the person that signed the document. Additionally,
digital signatures can be used to make sure that signed documents have not been altered.
To sign a document:
button on the toolbar.
The Add Signature dialog box will open. Select the certificate you want to use to sign the
document from the Sign as drop–down list. To view a certificate's properties, select it and click the
Show Certificate… button.
If the certificate you want to use is not in the list, you will have to install it. To install a
certificate, right–click it in Windows Explorer, click Install Certificate in the shortcut
menu and then follow the instructions in the Certificate Import Wizard.
Select your reason for signing the document from the Reason drop–down list or type a new reason.
You can also specify where the document was signed in the Location field and provide your contact
details in the Contact field (this step is optional).
Click the Sign button.
Select the area where you want to place the signature or simply click the desired location.
A signature can only be placed on a document once and contains information about the document's
version at the moment of its signing. If any changes are made to the document after it has been
signed, the signature becomes invalid. This means that the recipient of a signed document can be
sure that the document has not been altered.
To view the properties of a signature in a document:
Right–click the signature and click Show Signature Properties… in the shortcut menu, or
Double–click the signature in the SIGNATURES pane.
When you open a PDF document, ABBYY PDF Transformer+ automatically validates the digital
signatures in the document, if any. Validation results will be displayed in the SIGNATURES pane,
which also contains detailed information about the signatures used in the document.
To delete a signature: