How to codesign adobe air / mac application to distribute outside of the mac store

Hi,

We have created mac application using the adobe air framework. we want it to deploy outside of the mac store, our customer download it from

URL of our website. Previously we have signed the .dmg file with third party code signing certificate so it will not throw un trusted source

warning while installation. third party code signing certificate worked well previously.

but this month code signing certificate expired, we have purchase renewed certificate from the certificate vendor( global sign) & tried to sign with renewal certificate but it won't work. we have contacted global sign support they have provivided below information

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The response from GlobalSign: "It seems that you're signing .dmg files which is pointless to troubleshoot because Apple has implemented Gate Keeper wherein it won't accept applications that are signed by 3rd party CA's. If you want to distribute this on all latest OS X version you'll have to sign your application using an Apple certificate."

Do you know where to get this Apple certificate and how to implement it?

Please review: https://developer.apple.com/library/content/documentation/IDEs/Conceptual/AppDistributionG uide/DistributingApplicationsOutside/DistributingApplicationsOutside.html

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I have checked above they are giving option to create certificate in xCode only. How can we create the certificate in flash builder for .Dmg files

Please how can we codesing the dmg file destribution outside the macstore how can we code sign .dmg file

Please advise us.

Thanks,

Mayur