OAuth - Does my Resource Server need the endpoints 'Authorize' and 'Token'
<p>I am tasked at work at added an External Login to one of our applications.  The idea is that you can log in from Application A, and use your credentials from Application B in order to log into Application A.</p>

<p>With Application B, I am provided with a few API methods to validate a user, register user, get password, etc.  I do not have the endpoints on this API for 'Token' or 'Authorize' (generates Oauth_token).</p>

<p><strong>Actors</strong></p>

<p>Client: Application A</p>

<p>Resource Server: Application B</p>

<hr>

<p><strong>Questions:</strong></p>

<p>Can I implement an OAuth solution with only access to a few methods on Application B?</p>

<p>I guess I am lost and grasping for ways to solve this.  I dont know how to implement a custom OAuthService Provider for this scenario.  </p>

<p>Can anyone shed some light on this?</p>