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2 In the Options dialog box, Open and Save tab, select Display Digital
Signature Information.
3 Click OK.
4 Open a signed file.
In the Digital Signature Contents dialog box, in the Other Fields list,
select details of the digital signature, such as the issuer, beginning and
expiration dates of the digital ID, and the serial number.
5 Click Close.
To validate a signature using the Validate Digital Signatures icon
1 Open a signed file.
2 On the status bar, click the Validate Digital Signatures icon.
3 In the Validate Digital Signatures dialog box, if the file has a valid digital
signature, click View Base Signature.
The Digital Signature Contents dialog box displays details of the digital
signature such as the signer, expiration date of the digital ID, serial
number, comments about the digital signature, time stamp, and time
service.
4 Click Close.
5 If the file contains an external reference (xref) that contains a digital
signature, select View Xref Drawings in the Validate Digital Signatures
dialog box. Click View Xref Signature to view the external references
associated with the file.
6 Click Close.
To validate a signature in Windows Explorer
1 In Windows Explorer, locate a file whose digital signature you want to
check.
Some operating systems display a modified icon for a drawing that has
a valid digital signature attached.
2 Right-click the file name. Click Properties.
3 In the Properties dialog box, if the file contains a digital signature, the
Digital Signature tab is displayed. Click the Digital Signatures tab to view
the digital signature details.
View Drawings with Digital Signatures | 1939