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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-686" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-a9f8566e-b790-4129-af0f-f51d29cb904c" height="16" width="16" border="0" align="absmiddle" alt="Task" style="vertical-align: text-bottom"></a> <a href="https://issues.jboss.org/browse/AGDROID-686" style="color: #3b73af; text-decoration: none">AGDROID-686</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-686" style="color: #3b73af; text-decoration: none">Implement a function to check the Integrity of the Access 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="tjackman" id="email_tjackman" href="https://issues.jboss.org/secure/ViewProfile.jspa?name=tjackman" style="color:#3b73af;; color: #3b73af; text-decoration: none">Tom Jackman</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">h6. What<br>We should verify that the access token was signed using the Keycloak realm that it originated from to prevent tampering on the client side.<br><br>h6. Why<br>To prevent the possibility of a malicious user tampering with the access token to add additional roles to attempt to bypass some access control checks in the mobile app.<br><br>h6. How<br>This should be called before carrying out access control decisions within the app (It can probably be part of the getRoles function in [AGDROID-684|https://issues.jboss.org/browse/AGDROID-684]). This function should confirm that the Access token was signed using the realm that the client interact's with. The public key of the realm can probably be hard coded in the application and used for digital signature checks. <br><br>The issuer can be matched too - http://localhost:8080/auth/realms/MY_REALM to the</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"> issues</span> <span class="diffaddedchars" style="background-color:#ddfade;"> issuer</span> <span class="diffcontext"> of the JWT.</span> <span class="diffaddedchars" style="background-color:#ddfade;"> <br></span> <span class="diffcontext"><br></span> <span class="diffaddedchars" style="background-color:#ddfade;">Perhaps there can be a verifyToken() and a verifyIssuer()</span> <span class="diffcontext"><br></span> <span class="diffaddedchars" style="background-color:#ddfade;"><br></span> <span class="diffcontext">*Note*: This probably doesn't need to be exposed by the SDK. Its probably just an additional check to perform.<br></span> </td>
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