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<p class="MsoNormal"><span style="color:#1F497D">Breno and Naveen – can you please fix the syntax of the keys to use base64url encoding?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">You should also plan to migrate to 2048 bit keys, but I understand that this is a larger issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks for identifying these issues, James.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> -- Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Manger, James [mailto:James.H.Manger@team.telstra.com]
<br>
<b>Sent:</b> Monday, March 17, 2014 11:48 PM<br>
<b>To:</b> tbray@textuality.com<br>
<b>Cc:</b> openid-security@lists.openid.net; Mike Jones<br>
<b>Subject:</b> RE: [Openid-specs-ab] We have published a discovery doc & JWK endpoint<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-AU">Tim,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<pre><span lang="EN-AU" style="color:black">>> Start at <a href="https://accounts.google.com/.well-known/openid-configuration">https://accounts.google.com/.well-known/openid-configuration</a><o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black">>><o:p> </o:p></span></pre>
<pre><span lang="EN-AU" style="color:black">>> Hope it works...<o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<pre><span lang="EN-AU" style="color:black">> Looks good. I added this to the interop info at <a href="http://osis.idcommons.net/wiki/OC5:Google_Deployment.">http://osis.idcommons.net/wiki/OC5:Google_Deployment.</a><o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Actually it look bad.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">That configuration includes<o:p></o:p></span></p>
<pre><span lang="EN-AU" style="color:black">"jwks_uri": "<a href="https://www.googleapis.com/oauth2/v2/certs">https://www.googleapis.com/oauth2/v2/certs</a>",<o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-AU">That JWK has two key. Calling raw keys “certs” is a curious choice.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Both keys are wrong.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">They are 1024-bit RSA keys. The JWA spec says they MUST be 2048-bit or larger.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">The "n" members (modulus) are base64-encoded, when they should be base64url-encoded. Note the presence of / and +.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">They also start (after base64-decoding) with a leading 0x00 byte, whereas the spec says "n" is unsigned and “MUST utilize the minimum number of octets to represent the value”. There should be 1024/6=171 b64 chars, instead
of (8+1024)/6=172.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><a href="http://tools.ietf.org/html/draft-ietf-jose-json-web-algorithms-23#section-6.3.1.1">http://tools.ietf.org/html/draft-ietf-jose-json-web-algorithms-23#section-6.3.1.1</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:black"><a href="https://www.googleapis.com/oauth2/v2/certs">https://www.googleapis.com/oauth2/v2/certs</a>:<o:p></o:p></span></p>
<pre><span lang="EN-AU" style="color:black">{<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "keys": [<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> {<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "kty": "RSA",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "alg": "RS256",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "use": "sig",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "kid": "36239103c08ce207082b721dfbc80bc8d800bff2",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "n": "AKunY03zz/oJonovVNJjnjscjScnqtdtMEmnExJShJkoh8KjyHtH+TAldA7jrpQHDJnX81IxbkmH1JQMkgSKN4qVvJTqvA9RQFc6phN+7HU4JfPfpkYb3Jbnl35w4CXJkZoyXucAj4qw87szAgt2WBLrFoT08PjONmii5cmFR6BT",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "e": "AQAB"<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> },<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> {<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "kty": "RSA",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "alg": "RS256",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "use": "sig",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "kid": "7e18e2970941338884c88f2e789d7d8c519cd919",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "n": "ALjEqP0OUMivrQUIPj39+ckmE3KBtDDNdJZLCxFRGT2gUETsbc/x+zUit5xvKWN4DbSlVCwHdvIQcEgTdG+HZTrCoPDkoiOW+DxX4j+IkpiS1hy3YL9gHbBD4J75dGGRTfavZ77fu4E0/a/3s22rOda21ZQlUhlUZtyUxUGpxxSj",<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> "e": "AQAB"<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> }<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black"> ]<o:p></o:p></span></pre>
<pre><span lang="EN-AU" style="color:black">}<o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">--<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">James Manger<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
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