Click Start menu (Windows), All Programs Autodesk AutoCAD 2010 Attach Digital Signatures.
In the Attach Digital Signatures dialog
box, click Add Files.
In the Select File dialog box, select
the files you want to attach a digital signature to. Click Open.
NoteIn the Attach Digital
Signatures dialog box, you can attach digital signatures to files
that are compatible with AutoCAD 2000 and later drawing-file formats.
In the Attach Digital Signatures dialog
box, in the Select a Digital ID (Certificate) box, select a digital
ID to attach to the files you selected in the Files to Be Signed
list.
In the Get Time Stamp From box, select
a time service if you want to add a time stamp to the signed files.
If you do not want to add a time stamp, use the default option No
Time Stamp.
In the Comment box, add any information
that is relevant to the files you are signing.
Click Sign Files.
If the file you want to sign is read-only,
the Read-only File dialog box is displayed. Do one of the following:
To sign a read-only file, click Yes.
To sign all read-only files, select Use
the Same Answer for All Read-only Files in This Batch. Click Yes.
To cancel the application of the digital
signature to a single read-only file, click No.
To cancel the application of the digital
signature to all of the read-only files, click Cancel.
NoteIf you chose either
a Medium or High security level when you obtained your digital ID,
a message is displayed each time you try to attach a digital signature
to a file.
When all files have been signed, the
Signing Complete message displays the number of files that were
signed. Click OK.
Files that were successfully
signed display the text “Signed” in the Status column of the Files
to Be Signed list.
Click Close.
NoteWhen you sign multiple
files at once, the files become read-only files to help prevent
someone from accidentally invalidating a digital signature.