Oauth 1ConsumerSP

<- authorize (oauth_token)

request_token_ready (oauth_token) ->

Set up key & secret ->

<- Obtain user consent

Give consent ->

oauth_token & oauth_ token_ secret ->

Initiate & specify SP ->

<- request_token (key &sig )

Oauth 2ConsumerSP

<- access_token (key & oauth_token & sig)

Resource ->

Check signature & authorization

<- Service (resource)

oauth_token & oauth_ token_ secret ->

<- GET resource ?oauth_token & key & sig