Freshbooks OAuth issue

Very quick question for FreshBooks OAuth. When requesting a Request Token you need to provide (among others) the oauth_signature method.

Is the signature the consumer key and the 开发者_JAVA技巧consumer secret separated by an ampersand? e.g.

_consumer_key_%26_consumer_secret_

where _consumer_key_ is the consumer key. _consumer_secret_ is the consumer secret and %26 is a url encoded ampersand.

Simple answer is I was using the request headers instead of the Authorization header.