Why should I time stamp the code when I sign it?

(My Original Blog Post: Why should I time stamp the code when I sign it?)
Time stamping ensures that signed code will not expire when the code signing certificate expires. Signed code which has been time stamped is valid, even after the code signing certificate has expired. A new certificate is only necessary if you want to sign additional code. If you did not use the time stamping option during the signing, you must re-sign your code whenever the code signing certificate changes due to re-keying or renewal.


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