Section 3:
In addition, the authorization server MAY allow unauthenticated access token requests when the client identity does not matter (e.g. anonymous client) or when the client identity is established via other means. For readability purposes only, this specification is written under the assumption that the authorization server requires some form of client authentication. However, such language does not affect the authorization server's discretion in allowing unauthenticated client requests. From: Shane Weeden <[email protected]<mailto:[email protected]>> Date: Sun, 22 May 2011 21:40:22 -0700 To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: [OAUTH-WG] Draft 16 comment First, I'd like to add my support for Brian Eaton's comments on Draft 16. They actually helped clarify the comment I have below.... I found section 9 to be in contradiction to a part of section 6. In particular in section 9: Native applications SHOULD use the authorization code grant type flow without client password credentials (due to their inability to keep the credentials confidential) to obtain short-lived access tokens, and use refresh tokens to maintain access. In section 6 the specification is quite clear that client authentication is REQUIRED for the use of refresh tokens: The authorization server MUST validate the client credentials, ensure that the refresh token was issued to the authenticated client, validate the refresh token, and verify that the resource owner's authorization is still valid. My understanding is that refresh tokens are being used as a kind of long-lived, rolling "instance secret" for the native application and represent the grant authorized by the end user during initial establishment of the authorization code which is used to get the first refresh token. It seems to me this use case needs to be allowed for in the wording of section 6. Regards, Shane. _______________________________________________ OAuth mailing list [email protected]<mailto:[email protected]> https://www.ietf.org/mailman/listinfo/oauth
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