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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Tim,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><pre><span 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 style='color:black'>>><o:p> </o:p></span></pre><pre><span style='color:black'>>> Hope it works...<o:p></o:p></span></pre><p class=MsoNormal><o:p> </o:p></p><pre><span 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><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Actually it look bad.<o:p></o:p></p><p class=MsoNormal>That configuration includes<o:p></o:p></p><pre><span style='color:black'>"jwks_uri": "https://www.googleapis.com/oauth2/v2/certs",<o:p></o:p></span></pre><p class=MsoNormal>That JWK has two key. Calling raw keys “certs” is a curious choice.<o:p></o:p></p><p class=MsoNormal>Both keys are wrong.<o:p></o:p></p><p class=MsoNormal>They are 1024-bit RSA keys. The JWA spec says they MUST be 2048-bit or larger.<o:p></o:p></p><p class=MsoNormal>The "n" members (modulus) are base64-encoded, when they should be base64url-encoded. Note the presence of / and +.<o:p></o:p></p><p class=MsoNormal>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></p><p class=MsoNormal><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></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span 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 style='color:black'>{<o:p></o:p></span></pre><pre><span style='color:black'> "keys": [<o:p></o:p></span></pre><pre><span style='color:black'> {<o:p></o:p></span></pre><pre><span style='color:black'> "kty": "RSA",<o:p></o:p></span></pre><pre><span style='color:black'> "alg": "RS256",<o:p></o:p></span></pre><pre><span style='color:black'> "use": "sig",<o:p></o:p></span></pre><pre><span style='color:black'> "kid": "36239103c08ce207082b721dfbc80bc8d800bff2",<o:p></o:p></span></pre><pre><span style='color:black'> "n": "AKunY03zz/oJonovVNJjnjscjScnqtdtMEmnExJShJkoh8KjyHtH+TAldA7jrpQHDJnX81IxbkmH1JQMkgSKN4qVvJTqvA9RQFc6phN+7HU4JfPfpkYb3Jbnl35w4CXJkZoyXucAj4qw87szAgt2WBLrFoT08PjONmii5cmFR6BT",<o:p></o:p></span></pre><pre><span style='color:black'> "e": "AQAB"<o:p></o:p></span></pre><pre><span style='color:black'> },<o:p></o:p></span></pre><pre><span style='color:black'> {<o:p></o:p></span></pre><pre><span style='color:black'> "kty": "RSA",<o:p></o:p></span></pre><pre><span style='color:black'> "alg": "RS256",<o:p></o:p></span></pre><pre><span style='color:black'> "use": "sig",<o:p></o:p></span></pre><pre><span style='color:black'> "kid": "7e18e2970941338884c88f2e789d7d8c519cd919",<o:p></o:p></span></pre><pre><span style='color:black'> "n": "ALjEqP0OUMivrQUIPj39+ckmE3KBtDDNdJZLCxFRGT2gUETsbc/x+zUit5xvKWN4DbSlVCwHdvIQcEgTdG+HZTrCoPDkoiOW+DxX4j+IkpiS1hy3YL9gHbBD4J75dGGRTfavZ77fu4E0/a/3s22rOda21ZQlUhlUZtyUxUGpxxSj",<o:p></o:p></span></pre><pre><span style='color:black'> "e": "AQAB"<o:p></o:p></span></pre><pre><span style='color:black'> }<o:p></o:p></span></pre><pre><span style='color:black'> ]<o:p></o:p></span></pre><pre><span style='color:black'>}<o:p></o:p></span></pre><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>--<o:p></o:p></p><p class=MsoNormal>James Manger<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>