Microsoft Office Tutorials and References
In Depth Information
Adding a digital signature
Adding a digital signature
When a document is signed with a digital signature, you can be
sure that the document’s contents have not been changed after
it was signed. Any editing or tampering with the document will
cause the digital signature to be removed or to be marked as
To add a digital signature, you must first have a signing cer-
tificate . You can obtain a signing certificate from a certificate
authority such as VeriSign, Inc., or your organization might have
a local certificate server that can supply one.
Add a digital signature to a document
1 Click File to display the Info tab of the Backstage view.
2 Click Protect Document and then, on the menu that appears, click
Add A Digital Signature.
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