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Click Once Question

Posted on 2006-06-22
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Last Modified: 2007-12-19
On project properties page, under signing tab, certificate created from VS2005 for C# Win Apps will expire in a year time.
Q: How can I create a permanent certificate or where can I get a permanent one?
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Question by:michellechan57
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4 Comments
 
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Expert Comment

by:boethius78
ID: 16969728
The certificate is only valid for 12 months to limit the effect of your certificate being compromised.  However, as long as the ClickOnce deployment is signed when the certificate is still valid, the application will be allowed to run.

See http://msdn2.microsoft.com/en-us/library/ms172240.aspx for more details.
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Author Comment

by:michellechan57
ID: 16970569
Assuming the best deployment strategy for me is to install from the web due to certain constraint.
What will happen after the certificate becomes invalid?
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boethius78 earned 250 total points
ID: 16990479
From MSDN:
>>>
Typically, certificate expiration would mean that you need to re-sign your ClickOnce application every 12 months. Authenticode mitigates the need for this with support for time-stamping. When you sign a ClickOnce deployment using a certificate, ClickOnce records the date and time of the signing and embeds it in the deployment's digital signature. So long as the deployment was signed when the certificate was still valid, ClickOnce will allow the application to run even if the certificate has since expired.
<<<

I'm not an expert on these areas, but I'd take this to mean that as long as the installer is created while the certificate is valid, time stamping will allow installation at any time, whether the certificate is still valid or not.
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Author Comment

by:michellechan57
ID: 17018686
I am not sure what is the impact or risk I face, what I did was - deploy without signing the cert.
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