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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.jboss.org/browse/AGDROID" style="color: #3b73af; text-decoration: none">AeroGear Android</a> / <a href="https://issues.jboss.org/browse/AGDROID-751" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-35f754a5-7ffe-4d1d-b7ce-f16375a8e3f3" height="16" width="16" border="0" align="absmiddle" alt="Task" style="vertical-align: text-bottom"></a> <a href="https://issues.jboss.org/browse/AGDROID-751" style="color: #3b73af; text-decoration: none">AGDROID-751</a> </td>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.jboss.org/browse/AGDROID-751" style="color: #3b73af; text-decoration: none">dynamic load the public key in order to verify the token</a> </span> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Change By:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="weil" id="email_weil" href="https://issues.jboss.org/secure/ViewProfile.jspa?name=weil" style="color:#3b73af;; color: #3b73af; text-decoration: none">Wei Li</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <span class="diffcontext">*What*<br><br>We have implemented token integrity check as part of AGDROID-686. The implementation is based on the assumption that the public key of the realm will be available from mobile-services.json file.<br><br>However, based on the research and this SO issue (https://stackoverflow.com/questions/40503697/keycloak-missing-realm-public-key), it is not recommended to hard code the realm public key into the configuration file as the admin user could rotate it in KC to improve security. We need to add support for that.<br><br>*How*<br><br>The proposed approach is this:<br><br>* check if there is a `realm-public-key` in the config file for keycloak. If there is, use it.<br>* If there isn't such value, load it dynamically<br>**</span> <span class="diffaddedchars" style="background-color:#ddfade;"> After a successful login,</span> <span class="diffcontext"> first check if there is a cached version of the public key. If there is, check if the cached key is still valid (there should a configurable value to specify how long a public key can be valid locally)<br>** If there is no such cached key, or if the cached key is invalid, load it from the backend (use '/openid-connect/cert' endpoint). Save it in the local cache.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"> <br><br>This probably means that we need to change the signature of the method as it will become async.</span> <span class="diffaddedchars" style="background-color:#ddfade;"> </span> </td>
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