How do we sign an iPhone application using someone else's Enterprise program?

Question

We wrote an iPhone application that we want to sell to companies. The company is enrolled in the iOS Enterprise program.

How can we sign our application with their

Answer 1

You can generate the IPA binary with your own certificate (or unsigned) and ship it to the company who can then resign it with the codesign utility:

codesign -f -s (name of certificate) /path/to/application