When you look at the details of a digital certificate (digital certificate: Attachment for a file, macro project, or e-mail message that vouches for authenticity, provides secure encryption, or supplies a verifiable signature. To digitally sign macro projects, you must install a digital certificate.), look at the Issued to and Issued by fields to determine whether you trust its source. Look at the Valid from field to determine if the certificate is current.
If your Macro Security setting is set to Medium or High, you will receive a warning before you open files that contain macros (macro: An action or a set of actions that you can use to automate tasks. Macros are recorded in the Visual Basic for Applications programming language.) signed (digital signature: An electronic, encryption-based, secure stamp of authentication on a macro or document. This signature confirms that the macro or document originated from the signer and has not been altered.) with suspicious certificates. The warning dialog box allows you to click Details to view the properties of the certificate.
To view certificates for a file that you already have open, follow these steps:
- On the Tools menu, point to Macro, and then click Visual Basic Editor.
- Use the project explorer to select the desired Visual Basic for Applications (VBA) project.
- In the Visual Basic Editor, click Digital Signature on the Tools menu.
- In the Digital Signature dialog box, click Detail to view the details of the certificate.
Note The Detail button will only appear if a digital certificate is attached to the project.
