A
digital signature identifies an individual or an organization through
a digital ID (certificate), and enables you to validate the file.
Validating a file is especially important when you are working on
collaborative projects or transmitting files over the Internet.
You can validate a digital signature in either the program or Windows
Explorer.
Using the digital signatures feature, you can
obtain the following information about signed files:
- Whether the file was changed since signed.
- Whether the signers are who they claim
to be.
- Whether the signers can be traced (thus
preventing forgery).
A
digital signature is determined to be invalid for the following
reasons:
- The file was corrupted when the digital
signature was attached.
- The file was corrupted in transit.
- The digital ID is no longer valid.
NoteIf you want to retain
valid digital signature status, do not add a password or otherwise
modify or save a file that already has a digital signature attached. Make
modifications, such as adding passwords, before signing the file.
Signature information does not remain intact if you modify, save,
or export drawing data.
