Digitally signing your Microsoft Office documents adds additional security and assurance to your documents. PersonalSign 2+ and AATL certificates attest to the identity of the signer and adds assurance as to who actually signed the document. Additionally, when you digitally sign a document, any modifications made to the document after signing will remove the digital signature. This security feature makes certain that the content of what you signed has not been modified.
There are two methods for signing Microsoft Office documents. You can place either a visible signature or an invisible signature. Both the visible and non-visible signatures provide the same level of cryptographic security, the visible signature adds an aesthetic element to your signature.
You can watch the video below for a tutorial.
Or, you can check the step by step guidelines below.
Open the document you wish to sign in Office 2010 & 2013. Move the cursor and click on the area of the document where you'd like your signature to appear.
Open the document you wish to sign in Microsoft Office 2010 or 2013.
Click Protect Document and select the Add a Digital Signature option.
Select the commitment type and add any details you would like as to why the document is being signed. Make sure the correct certificate is selected and click Sign.
You will know your document has been signed correctly as it will display as a Signed Document and the Permissions will be highlighted. Note: Once the document is signed it should not be modified. Modifying the signed document will void the signature.
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