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Description of digital signatures and code signing in workbooks in Excel
- Article
- Applies to:
- Excel 2007, Excel 2003
Summary
In Microsoft Office Excel 2003 and in later versions of Excel, you can digitally sign a workbook or code sign your macro project.
This ensures that you were the last person to make changes to the workbook or macro project.
More information
What is a digital certificate?
Digital certificates and signatures help to assure you that the file that you are about to use comes from a reliable source.
They help to assure you that the file has not been tampered with.
A digital certificate is an ID that a file carries with it.
How to digitally sign a pdf
To validate a signature, a certifying authority validates information about the creator of the file and then issues the digital certificate. The digital certificate contains information about the person to whom the certificate was issued, as well as information about the certifying authority that issued it.
When a digital certificate is used to sign a file, this ID is stored with the file in a verifiable form so that it can be dis
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