If I have contracted out to a thirdparty company to write an app for me, how can I publish it to the app store using my existing iOS developer/itunes connect account? The thirdparty company does not want to give me the source code for me to build, sign, and publish myself. I do not want to give up private information like certificates, private keys, and/or login credentials to the thirdparty company to sign and/or publish on my behalf.
The reason that I thought my fellow Xamarin users might know something is because of Xamarin Test Cloud. The test cloud receives an iOS app built by us with any prov profile and they somehow can install it on all of their cloud devices without us having to know all of their device ids to embed in the prov profile. The only way I can think of that could make that work is if the Test Cloud is resigning the app with a different certificate and prov profile.
If this resigning is possible, that could be a good solution for this thirdparty contracted app publishing problem. The thirdparty company builds and signs the app however they want and I just resign it with my distribution profile and certificate.
Does anybody if this is resigning is possible or if there is a better way to solve this publishing problem of a thirdparty contracted app?