Re: [OAUTH-WG] [EXT] Re: WGLC review of draft-ietf-oauth-security-topics-13

2019-11-28 Thread Torsten Lodderstedt
Hi, > On 27. Nov 2019, at 15:04, Pedram Hosseyni > wrote: > > Hi Mike, > > > Wouldn't most RSs only trust access tokens from a single AS anyways? > > At the last OSW, there was broad agreement that this is typically the case. > Otherwise, the mitigation that we suggested in the paper would n

Re: [OAUTH-WG] [EXT] Re: WGLC review of draft-ietf-oauth-security-topics-13

2019-11-27 Thread Pedram Hosseyni
Hi Mike, > Wouldn't most RSs only trust access tokens from a single AS anyways? At the last OSW, there was broad agreement that this is typically the case. Otherwise, the mitigation that we suggested in the paper would not prevent the attack. > Would it be reasonable for the document to reco

Re: [OAUTH-WG] [EXT] Re: WGLC review of draft-ietf-oauth-security-topics-13

2019-11-26 Thread Peck, Michael A
Hi Pedram, I understand why a client would need to allow use of multiple authorization servers if the client needs to access various resource servers each of which may trust different ASs (e.g. the client supports accessing resources at multiple cloud storage services). However, how common is