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<p class="MsoNormal">The final session at IIW related to JSON Web Tokens (JWTs) explored whether and how to represent public key information as JWTs or other JSON structures as an alternative to X.509 certificates.&nbsp; Thanks to Breno de Medeiros for
<a href="http://iiw.idcommons.net/JSON_Spec_Work_continued">taking notes</a>, which I&#8217;ve pasted in below:<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal"><b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Issue/Topic:</span></b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"> Public Key Certificates as JWT
<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Session:</span></b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"> Thursday 1E
<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Convener:</span></b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"> Mike Jones, Microsoft
<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Notes-taker(s):</span></b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"> Breno de Medeiros
<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Tags:</span></b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"> If and how to represent public key certificates as Jason Web
 Tokens <o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Discussion notes:</span></b><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">
<o:p></o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="mso-list:l5 level1 lfo3"><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Certificate installation a difficult and core technical obstacle in configuring security
<o:p></o:p></span></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l5 level1 lfo3">
<span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Not all cases require PKI validation; motivation examples given by J. Panzer et. al., drove the proposal for the Magic Signatures specs
<o:p></o:p></span></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l5 level1 lfo3">
<span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">In the absence of PKI certificates, it's not possible to 'preserve' the security context around fetching the certificate
<o:p></o:p></span></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l5 level1 lfo3">
<span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Is there a need to invent another type of JSON-based certificate? Do we have a need for certificates in addition to bare keys?<o:p></o:p></span></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l5 level1 lfo3">
<span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Why re-invent X.509? Create a JSON binding for the subset of KeyInfo from X.509 that is needed to advertise keys
<o:p></o:p></span></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l5 level1 lfo3">
<span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">After reviewing the KeyInfo, decided that the part of it of interest is trivially small and already described in competing proposals
<o:p></o:p></span></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l5 level1 lfo3">
<span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Even a JWT is too complex, only need to create a simple descriptor for the key in JSON
<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l5 level1 lfo3"><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Key_id needed
<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Decision: Go with simple approach
<o:p></o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="mso-list:l1 level1 lfo6"><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Keep this mini-spec separate from JWT and cross-reference? Or include this in the expanded spec of JWT to include encryption?
<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Decision: Keep specs separate
<o:p></o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="mso-list:l0 level1 lfo9"><span lang="EN" style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Need to allow this to have a URL-safe representation such as compact JWT?
<o:p></o:p></span></li></ul>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Examples of what these representations might look like are as follows:<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">{&quot;keyvalues&quot;:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp; [<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp; {&quot;alg&quot;:&quot;ECDSA&quot;,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp;&nbsp; &quot;x&quot;:&quot;MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4&quot;,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp;&nbsp; &quot;y&quot;:&quot;4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM&quot;,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp; &nbsp;&quot;keyid&quot;:&quot;1&quot;},<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp; {&quot;alg&quot;:&quot;RSA&quot;,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp;&nbsp; &quot;modulus&quot;: &quot;0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx4cbbfAAtVT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMstn64tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FDW2QvzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n91CbOpbISD08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINHaQ-G_xBniIqbw0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw&quot;,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp;&nbsp; &quot;exponent&quot;:&quot;AQAB&quot;,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp; &nbsp;&quot;keyid&quot;:&quot;2&quot;}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">&nbsp; ]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Courier New&quot;">}</span><o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Near the end of the discussion, it was pointed out that want we are proposing is much closer to the XMLDSIG KeyValue element than the KeyInfo element.<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">The participants recognize that the security of these raw keys is dependent upon the security of the mechanisms for distributing them &#8211; in most cases TLS.<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">References:<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l3 level1 lfo10"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">&middot;<span style="font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>XML Signature Syntax and Processing (Second Edition):&nbsp;
<a href="http://www.w3.org/TR/xmldsig-core/">http://www.w3.org/TR/xmldsig-core/</a><o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l3 level1 lfo10"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">&middot;<span style="font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>Using the Elliptic Curve Signature Algorithm (ECDSA) for XML Digital Signatures:&nbsp;
<a href="http://tools.ietf.org/html/rfc4050">http://tools.ietf.org/html/rfc4050</a><o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l3 level1 lfo10"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">&middot;<span style="font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>Additional XML Security Uniform Resource Identifiers (URIs):&nbsp;
<a href="http://tools.ietf.org/html/rfc4051">http://tools.ietf.org/html/rfc4051</a><o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l3 level1 lfo10"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">&middot;<span style="font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>Magic Signatures:&nbsp; <a href="http://salmon-protocol.googlecode.com/svn/trunk/draft-panzer-magicsig-experimental-00.html">
http://salmon-protocol.googlecode.com/svn/trunk/draft-panzer-magicsig-experimental-00.html</a><o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- Mike<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
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