Can I use a free self signed SSL certificate for a secure Canvas URL (Facebook requires it Oct 1st)

I notice some pages offer this: http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=free+ssl+self+signed

Would a free self signed SSL cert work with Facebook?

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Question by (9/6/2011 11:52:14 AM)

Answer

You may be able to use a Self Signed certificate but it will throw up browser warnings because your certificate isn't included in the ones that are trusted. To get a proper certificate you need to pay and get one through a Certificate Authority

According to this forum post on the FB Developer Forums you should be able to:

Facebook has not set up any requirements for the SSL certificate, but in the interest of your users not being showed an invalid signature dialog (It's looking pretty dangerous in firefox, while it's not dangerous at all having a self-signed cert) you should get a certificate for somewhere around 10$/Yr.

However the wording on the Developer Roadmap suggests that you actually need to obtain a certificate. You could get the minimum required certificate for about $10/year and could save quite a few headaches

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