Re: [OAUTH-WG] Question about usage of OAuth between servers

[Bill Mills <[e-mail]>]

Using Bearer tokens with refresh tokens is a valid use case for server-to-server and has the same nice properties that is does for users, in that it applies a single control point for revoking access.  Using Bearer tokens has very different security properties than OAuth 1.0a and you should carefully consider this.  Look at the proof-of-posession work rather than simple Bearer tokens. 


     On Thursday, July 2, 2015 9:10 AM, Lisa Li1 <[e-mail]> wrote:
   

 <!--#yiv0512297667 _filtered #yiv0512297667 {font-family:Helvetica;panose-1:2 11 6 4 2 2 2 2 2 4;} _filtered #yiv0512297667 {font-family:SimSun;panose-1:2 1 6 0 3 1 1 1 1 1;} _filtered #yiv0512297667 {font-family:SimSun;panose-1:2 1 6 0 3 1 1 1 1 1;} _filtered #yiv0512297667 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv0512297667 {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;} _filtered #yiv0512297667 {panose-1:2 1 6 0 3 1 1 1 1 1;}#yiv0512297667 #yiv0512297667 p.yiv0512297667MsoNormal, #yiv0512297667 li.yiv0512297667MsoNormal, #yiv0512297667 div.yiv0512297667MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:"Calibri", "sans-serif";}#yiv0512297667 a:link, #yiv0512297667 span.yiv0512297667MsoHyperlink {color:blue;text-decoration:underline;}#yiv0512297667 a:visited, #yiv0512297667 span.yiv0512297667MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv0512297667 p.yiv0512297667MsoAcetate, #yiv0512297667 li.yiv0512297667MsoAcetate, #yiv0512297667 div.yiv0512297667MsoAcetate {margin:0in;margin-bottom:.0001pt;font-size:8.0pt;font-family:"Tahoma", "sans-serif";}#yiv0512297667 span.yiv0512297667EmailStyle17 {font-family:"Calibri", "sans-serif";color:windowtext;}#yiv0512297667 span.yiv0512297667BalloonTextChar {font-family:"Tahoma", "sans-serif";}#yiv0512297667 .yiv0512297667MsoChpDefault {font-family:"Calibri", "sans-serif";} _filtered #yiv0512297667 {margin:1.0in 1.0in 1.0in 1.0in;}#yiv0512297667 div.yiv0512297667WordSection1 {}-->Hi All  This is Lisa. Our project is adopting OAuth 2 as authentication specification. For the client-server communication, OAuth token works fine. But we have some cases of server to server communication, usually it will be multiple tasks running in parallel or sequence or even in multiple threads. In this case, we are not sure we should reuse the access token grant by end user or create another token? Moreover, if token is expired in 30 min, we are able to do refresh but may meet some issue on the token consistency between each task, thus it might be refreshed again and again…  But with OAuth 1.0, since it will not expired and we don’t have to do refresh, it will work fine.  So for OAuth 2.0, what’s your consideration for server to server communication scenario? Or do you have any suggestion here?  Thanks.    Lisa LiPrincipal Software EngineerSymantec Corporation  Office: [phone]  /  Mobile: [phone] [e-mail]      This message (including any attachments) is intended only for the use of the individual or entity to which it is addressed and may contain information that is non-public, proprietary, privileged, confidential, and exempt from disclosure under applicable law or may constitute as attorney work product. If you are not the intended recipient, you are hereby notified that any use, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, notify us immediately by telephone and (i) destroy this message if a facsimile or (ii) delete this message immediately if this is an electronic communication.  
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