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  4. Spring Security Certificate Authentication Authorization Example

Spring Security Certificate Authentication Authorization Example

Krishna Prasad user avatar by
Krishna Prasad
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Dec. 17, 12 · Interview
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In continuation of my earlier blog Container based Security and Spring Security, in this blog, I will demonstrate how you can achieve Certificates Authentication and Authorization in Spring Security. As with all my blogs, the sample code for this is @ Github.

As mentioned in Enabling CLIENT-CERT based authorization on Tomcat,

  • You need to create keystore information
  • You need to change the connector configuration in tomcat to work with SSL
  • We dont need to configure MemoryRealm, because we use Spring Security for authentication

Continue and do the below steps,

  • Go to spring-mvc-client3 folder in the sample codebase and run “mvn clean package -DskipTests” it will create a war file in target folder, copy the war file into tomcat webapps folder.
  • Go to spring-mvc-client4 and repeat the maven command and copy the war file into tomcat webapps folder.
  • Start the tomcat server by going to <tomcat installed folder>/bin/startup.bat
  • Go to spring-mvc-client3 folder and run “mvn test” and notice all the tests are successful

To understand what is going open spring-mvc-client3/src/main/webapp/WEB-INF/applicationContext-security.xml, you will notice below configuration,

<!-- There is no security requirement to access the html resources like css, js etc and maybe loggedout.jsp page -->
<http pattern="/static/**" security="none"/>
<http pattern="/loggedout.jsp" security="none"/>

<http use-expressions="true">
<!-- Only supervisor can access secure1 webresources and all the resources under it and this resource can be accessed only if the request is https-->
<intercept-url pattern="/secure1/**" access="hasRole('supervisor')" requires-channel="https"/>
<!-- You have to be logged in to access secure folder and all resources under it -->
<intercept-url pattern="/secure/**" access="isAuthenticated()" requires-channel="https"/>
<!-- You have to be logged in to access secure folder and all resources under it -->
<intercept-url pattern="/**" access="IS_AUTHENTICATED_ANONYMOUSLY" requires-channel="https"/>

<!-- Here is where you provide a regular expression to extract user identity from the certificate and pass it to a authentication provider, in this example,
there is a dummy authentication provider as below, in real example, the auth provider is something like LDAP -->
<x509 subject-principal-regex="CN=(.*?)," user-service-ref="accountService" />
</http>

<authentication-manager>
<authentication-provider>
<!-- Dummy anthentication provider -->
<user-service id="accountService">
<user name="client1" password="" authorities="supervisor" />
<user name="client2" password="" authorities="user" />
</user-service>
</authentication-provider>
</authentication-manager>

Open the JUnit test @ spring-mvc-client3/src/test/java/com/goSmarter/springsecurity/SecureHttpClient1Test.java and see based on the above configuration, I have 2 positive testcases and 1 negative testcase. If you notice testSecurePage, user “client1″ can access “secure1″ folder because he is a “supervisor”, it is returning http OK(200). If you notice testSecurePageNegativeCase, user “client2″ cannot access “secure1″ folder because he is a “user”, it is giving forbidden(403) http code.

I hope this blog helped you.

Spring Security authentication Spring Framework

Published at DZone with permission of Krishna Prasad, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

Related

  • Authentication With Remote LDAP Server in Spring WebFlux
  • Authentication With Remote LDAP Server in Spring Web MVC
  • How to Implement Two-Factor Authentication in A Spring Boot OAuth Server? Part 2: Under the Hood
  • Spring Security With LDAP Authentication

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