I have been banging my head against the wall for quite a few days now not being able to find a solution for this when I was hoping it would be quite simple.
I would like to create a php page that validates the signature that is returned from Canvas when calling my LIT.
I have managed to generate an OAuth signature but they don't seem to match.
I have tried several OAuth Libraries but nothing seems to get the signature correct.
Is there a preferred method or a know working example of php based code that will successfully validate the returned signature?