[ 
https://issues.apache.org/jira/browse/KNOX-2149?focusedWorklogId=359744&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-359744
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ASF GitHub Bot logged work on KNOX-2149:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 14/Dec/19 02:28
            Start Date: 14/Dec/19 02:28
    Worklog Time Spent: 10m 
      Work Description: nxverma commented on pull request #216: KNOX-2149 - 
JWTTokenProvider - JWT verification with OIDC provider by invoking JWKS 
verification url
URL: https://github.com/apache/knox/pull/216#discussion_r357891293
 
 

 ##########
 File path: gateway-util-common/pom.xml
 ##########
 @@ -1,96 +1,123 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!--
-  Licensed to the Apache Software Foundation (ASF) under one or more
-  contributor license agreements.  See the NOTICE file distributed with
-  this work for additional information regarding copyright ownership.
-  The ASF licenses this file to You under the Apache License, Version 2.0
-  (the "License"); you may not use this file except in compliance with
-  the License.  You may obtain a copy of the License at
+<!-- Licensed to the Apache Software Foundation (ASF) under one or more 
contributor 
+       license agreements. See the NOTICE file distributed with this work for 
additional 
+       information regarding copyright ownership. The ASF licenses this file 
to 
+       You under the Apache License, Version 2.0 (the "License"); you may not 
use 
+       this file except in compliance with the License. You may obtain a copy 
of 
+       the License at http://www.apache.org/licenses/LICENSE-2.0 Unless 
required 
+       by applicable law or agreed to in writing, software distributed under 
the 
+       License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
CONDITIONS 
+       OF ANY KIND, either express or implied. See the License for the 
specific 
+       language governing permissions and limitations under the License. -->
+<project xmlns="http://maven.apache.org/POM/4.0.0";
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+       xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd";>
+       <modelVersion>4.0.0</modelVersion>
+       <parent>
+               <groupId>org.apache.knox</groupId>
+               <artifactId>gateway</artifactId>
+               <version>1.3.0</version>
+       </parent>
 
-      http://www.apache.org/licenses/LICENSE-2.0
+       <artifactId>gateway-util-common</artifactId>
+       <name>gateway-util-common</name>
+       <description>A collection of common utilities.</description>
 
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
--->
-<project xmlns="http://maven.apache.org/POM/4.0.0";
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd";>
-    <modelVersion>4.0.0</modelVersion>
-    <parent>
-        <groupId>org.apache.knox</groupId>
-        <artifactId>gateway</artifactId>
-        <version>1.4.0-SNAPSHOT</version>
-    </parent>
-    
-    <artifactId>gateway-util-common</artifactId>
-    <name>gateway-util-common</name>
-    <description>A collection of common utilities.</description>
+       <dependencies>
+               <dependency>
+                       <groupId>org.apache.knox</groupId>
+                       <artifactId>gateway-i18n</artifactId>
+               </dependency>
+
+               <dependency>
+                       <groupId>com.fasterxml.jackson.core</groupId>
+                       <artifactId>jackson-core</artifactId>
+               </dependency>
+               <dependency>
+                       <groupId>com.fasterxml.jackson.core</groupId>
+                       <artifactId>jackson-databind</artifactId>
+               </dependency>
+
+               <dependency>
+                       <groupId>commons-codec</groupId>
+                       <artifactId>commons-codec</artifactId>
+               </dependency>
+
+               <dependency>
+                       <groupId>javax.servlet</groupId>
+                       <artifactId>javax.servlet-api</artifactId>
+               </dependency>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.knox</groupId>
-            <artifactId>gateway-i18n</artifactId>
-        </dependency>
+               <dependency>
+                       <groupId>com.sun.activation</groupId>
+                       <artifactId>javax.activation</artifactId>
+               </dependency>
 
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-core</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-        </dependency>
-        
-        <dependency>
-            <groupId>commons-codec</groupId>
-            <artifactId>commons-codec</artifactId>
-        </dependency>
+               <dependency>
+                       <groupId>org.apache.directory.server</groupId>
+                       <artifactId>apacheds-jdbm</artifactId>
+               </dependency>
 
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-        </dependency>
+               <dependency>
+                       <groupId>org.slf4j</groupId>
+                       <artifactId>slf4j-api</artifactId>
+               </dependency>
+               <dependency>
+                       <groupId>org.slf4j</groupId>
+                       <artifactId>slf4j-log4j12</artifactId>
+               </dependency>
 
-        <dependency>
-            <groupId>javax.servlet</groupId>
-            <artifactId>javax.servlet-api</artifactId>
-        </dependency>
+               <dependency>
+                       <groupId>log4j</groupId>
+                       <artifactId>log4j</artifactId>
+               </dependency>
 
-        <dependency>
-            <groupId>com.sun.activation</groupId>
-            <artifactId>javax.activation</artifactId>
-        </dependency>
+               <!-- ********** ********** ********** ********** ********** 
********** -->
+               <!-- ********** Test Dependencies ********** -->
+               <!-- ********** ********** ********** ********** ********** 
********** -->
 
-        <dependency>
-            <groupId>org.apache.directory.server</groupId>
-            <artifactId>apacheds-jdbm</artifactId>
-        </dependency>
+               <dependency>
+                       <groupId>org.apache.knox</groupId>
+                       <artifactId>gateway-test-utils</artifactId>
+                       <scope>test</scope>
+               </dependency>
+               <!-- <dependency> <groupId>com.auth0</groupId> 
<artifactId>jwks-rsa</artifactId> 
 
 Review comment:
   all fixes are done please review  @risdenk 
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 359744)
    Time Spent: 3.5h  (was: 3h 20m)

> Knox JWTTokenProvider - JWT verification with OIDC provider by invoking JWKS 
> verification url
> ---------------------------------------------------------------------------------------------
>
>                 Key: KNOX-2149
>                 URL: https://issues.apache.org/jira/browse/KNOX-2149
>             Project: Apache Knox
>          Issue Type: New Feature
>          Components: KnoxSSO
>            Reporter: Saravanan Sathyamoorthy
>            Assignee: Neeraj Verma
>            Priority: Major
>          Time Spent: 3.5h
>  Remaining Estimate: 0h
>
> Current capability in Apache Knox - 
>  Knox has pac4j provider 
> ([https://knox.apache.org/books/knox-0-12-0/user-guide.html#Pac4j+Provider+-+CAS+/+OAuth+/+SAML+/+OpenID+Connect])
>  that provides OIDC support ( 
> [https://knox.apache.org/books/knox-0-12-0/user-guide.html#For+OpenID+Connect+support:])
>  However this only works for UI applications.
> For REST API -> we need to use JWT token provider ( 
> [https://knox.apache.org/books/knox-0-12-0/user-guide.html#JWT+Provider]) 
> that takes .pem file ( certificate with public key to decrypt the token) as 
> argument.
>  Implementation class -> 
> [https://github.com/apache/knox/blob/master/gateway-provider-security-jwt/src/main/java/org/apache/knox/gateway/provider/federation/jwt/filter/JWTFederationFilter.java]
>  - takes (public static final String SSO_VERIFICATION_PEM = 
> "sso.token.verification.pem" ) as argument.
> This .pem file is parsed to get the public key to validate the token.
>  // token verification pem
>      String verificationPEM = 
> filterConfig.getInitParameter(SSO_VERIFICATION_PEM);
>      // setup the public key of the token issuer for verification
>      if (verificationPEM != null) {
>        publicKey = CertificateUtils.parseRSAPublicKey(verificationPEM);
>      }
>  
> .Resolution:
>  Option 1 - We can change the code to pass the public key and use it for 
> token validation. Down side is every time we change the key there should be a 
> Knox config change.
>  Option 2 - We can change the code to pass the JWKS verification url and if a 
> key is changed - no knox config change is required. Change done to support 
> using JWKS verification url to validate the token :
>  We selected Option 2 to make things more robust.
>  Class JWTFederationFilter was changed to get an additional parameter (JWKS 
> verification url) and code to use this url to get the public key and then use 
> this to validate the token. This approach will make it easy to maange for key 
> rotation.
>  Library used is - [https://github.com/okta/okta-jwt-verifier-java]



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