- #Microsoft office 2007 confirmation code generator how to#
- #Microsoft office 2007 confirmation code generator plus#
Select the type of digital ID that you want to use, and then click OK.Īfter you complete the necessary steps for the type of digital ID that you selected, your Excel workbook is now signed. You must save the file in the Excel Workbook (*.xlsx) format to add the digital signature.Īfter you save the workbook, the Get a Digital ID dialog box is displayed. If the workbook has changed and is not yet saved, or if it is not saved in the Excel 2007 workbook format, you receive the following message:īefore you can add signatures, you must save the workbook in a format that supports digital signatures.ĭo you want to save the workbook as a Microsoft Office Excel Workbook?Ĭlick Yes to display the Save As dialog box. Microsoft Office Excel 2007Ĭlick the Microsoft Office Button, point to Prepare, and then click Add a Digital Signature. To add a digital signature to your workbook, follow these steps, as appropriate for the version of Excel that you are running. How do I add a digital signature to a workbook? However, this certificate is not authenticated by a Certificate Authority (CA). You can create your own digital certificate for personal use or testing purposes with the SelfCert.exe tool that is provided in Microsoft Office. Microsoft Trusted Root Certificate Programs
#Microsoft office 2007 confirmation code generator how to#
The certification authority does an in-depth identification check before it issues a digital certificate.įor more information about how to obtain a digital signature or code signing ID, visit the following Microsoft Web site: You can obtain a digital certificate or a code signing ID from a commercial certification authority or from your internal security administrator or information technology (IT) professional.Ī certification authority can issue you a digital certificate or code signing ID for no charge. To obtain a digital signature, you first have to have a digital certificate. Additionally, you cannot code sign a macro project, because Excel will not allow you to create or make changes to macro projects in a workbook after it has been set up as shared workbook.
If you digitally sign a shared workbook, Excel will not retain the digital signature because more than one person can make changes to the workbook. However, Excel versions that are earlier than Microsoft Excel 2002 do not recognize the digital signature. You can digitally sign any Excel workbook or Excel template. You can digitally sign the workbook for content and you can also code sign your VBA macro project in the same workbook. As long as the file remains signed, others will know it came from you and has not been modified.ĭigital signing a workbook is different from code signing a Visual Basic for Applications (VBA) macro project. For example, you can sign a file and other users can view the file. You can view and edit signed Excel workbooks, although you cannot modify and save a signed workbook without invalidating the signature. What happens when I use a digital signature? So, by encrypting the value instead of the data, a digital signature helps a user to verify the data was not changed. This algorithm makes it nearly impossible to change the data without changing the resulting value. The value is a number that a cryptographic algorithm generates for any data that you want to sign.
#Microsoft office 2007 confirmation code generator plus#
Digital signatures can also help you distinguish workbooks and macros created by a reliable source from undesirable and potentially damaging workbooks or macro code (viruses).Ī digital signature is a public certificate plus the value of the signed data as encrypted by a private key. What is a digital signature?Įxcel uses digital signatures on the workbook contents to help ensure that the workbook has not been modified and saved since it was signed. 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 displayed to a user. 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. To validate a signature, a certifying authority validates information about the creator of the file and then issues the digital certificate.
They help to assure you that the file has not been tampered with.Ī digital certificate is an ID that a file carries with it. More information What is a digital certificate?ĭigital certificates and signatures help to assure you that the file that you are about to use comes from a reliable source.
This ensures that you were the last person to make changes to the workbook or macro project. In Microsoft Office Excel 2003 and in later versions of Excel, you can digitally sign a workbook or code sign your macro project. For more information about this change, read this blog post. Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise.
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