Published at DZone with permission of Andrew Hughes, DZone MVB. Build an OAuth 2.0 Authorization Server With Spring Boot and Spring Security Learn more about building an OAuth 2.0 authorization server with Spring Boot and Spring Security. rewrite Spring Security OAuth to better align Spring’s OAuth story, simplify the code base, and make Spring’s OAuth support more nimble. For more info, take a look at the project’s GitHub. The Spring Security OAuth project has become a model project and is a testament to what our wonderful community can accomplish. That’s your authorization server! Other names may be trademarks of their respective owners.

You can see the completed code for this tutorial on GitHub at oktadeveloper/okta-spring-boot-authz-server-example. We would love to have you join us on this journey. Third, the original project provided all of its own library support. Well, the time has come. Storage of plain passwords is not allowed anymore and the new format is described here. At the time of writing this article it's in "experimental state" and available at the following GitHub repository.

You may need to use an incognito browser or log out of your developer.okta.com dashboard here so that you don’t skip the login page and get directed immediately to the secured endpoint. In the previous tutorial, you looked at how to use Spring Boot and Spring Security to implement a very basic authentication server and client app. For that reason, the new support was able to focus solely on OAuth 2.0, which has simplified the code significantly. Create another Java class named SecurityConfiguration: This class defines the Spring Security configuration for your application: allowing all requests on the home path and requiring authentication for all other routes. Now, with many libraries to choose from, we were able to fold it into Spring Security proper by providing an abstraction around an existing library named Nimbus. Many developers work around the clock to ensure their app is secure by seeking out individual vulnerabilities to patch. The securedPage.html template file is slightly different because of the way the authentication information is returned from Okta as compared to the simple authentication server you built earlier. However, it's also possible to use an external data source. All rights reserved. Enter username Andrew and password abcd (from the application.properties file from the authentication server). First, the original OAuth support was done very early on and could not have anticipated all the different ways in which it would need to be used. You also need two similar template files in the src/main/resources/templates directory. document.write(d.getFullYear()); VMware, Inc. or its affiliates. Spring Boot Security - Introduction to OAuth Spring Boot OAuth2 Part 1 - Getting The Authorization Code Spring Boot OAuth2 Part 2 - Getting The Access Token And Using it to fetch data. Finally, create another Java class names SecurityConfiguration: You should see a bunch of output that ends with: This time, you’ll be directed to the Okta login page. Second, when the OAuth project was originally written, it included support for both OAuth 1.0 and OAuth 2.0. “AWS” and “Amazon Web Services” are trademarks or registered trademarks of Amazon.com Inc. or its affiliates. The AuthServerConfig class is the class that will create and return our JSON web tokens when the client properly authenticates. Join the DZone community and get the full member experience. Most of them are borrowed from the official Spring Guide, but few ones are different: Even for demos, it's still better to have the following approach, especially when adding one line of config allows us to do so: To keep things easier we're specifying OAuth2 client settings in the codebase. Spring Boot + OAuth 2 Client Credentials Grant - Hello World Example. This is how with Basic Auth request looks like: Although it's not required to specify scope when requesting a token, it's required to set one during the configuration. To fix this, add JAXB to your build.gradle. DelegatingPasswordEncoder will take care of that configuration for us. Replaces Basic Authentication and allows you to pass all necessary params as a part of a request body. That's the main class that is responsible for OAuth2 configuration and there is a noticeable amount of actions happen inside of it. After careful consideration, the Spring Security team decided that we would not formally support creating authorization servers. This is where the core logic of Spring Authorization Server resides. With your help, this project will grow in the same way that the original Spring Security OAuth project did. After you’ve verified your email, log in and perform the following steps: Leave the page open of take note of the Client ID and Client Secret. Opinions expressed by DZone contributors are their own. It should be noted that we will not be covering OAuth2 concepts such as authorization grants, access and refresh tokens that represented by JWT tokens and involved parties such as client, resource server, authentication server in detail. Before continuing with the article, it's worth mentioning that Spring Authorization Server is deprecated (as was written in the official spring blog post Spring Security OAuth 2.0 Roadmap Update). Marketing Blog. You’ll notice in the controller above that they’re simply returning strings for the routes. Refer to Marcos Barbero's post at the end of the article for more examples. OAuth 2 is an authorization method to provide access to protected resources over the HTTP protocol. The latter would be exposed via public URL so that the resource server can key use it to verify access_token signature. Spring OAuth2 Resource Server like majority other frameworks and platforms is configured to accept access token in the Authorization header (this is where access_token field comes into play): If access was set correctly, the response should be the following: This concludes our demo. That's how our Resource Server will communicate to Authorization server to retrieve JWKs and verify that the access token's signature supplied in the Authorization header request from the end-user is genuine. Introduction. All other trademarks and copyrights are property of their respective owners and are only mentioned for informative purposes. We provide free accounts to developers so they can develop OIDC apps with no fuss. In this situation WebSecurityConfig.class is responsible for setting up end users and has nothing to do with OAuth2 config. A full look at Thymeleaf templating is well beyond the scope of this tutorial, but you can take a look at their website for more info.

Back to the Spring Initializr one more time.

Create a new project with the following settings: Copy the project and unpack it somewhere.

It’s impressive how the community has continued to build on its past success. Terms of Use • Privacy • Trademark Guidelines • Thank you. org.springframework.context.annotation.Bean; org.springframework.context.annotation.Configuration; org.springframework.security.crypto.factory.PasswordEncoderFactories; org.springframework.security.crypto.password.PasswordEncoder; org.springframework.context.annotation.Import; org.springframework.security.authentication.AuthenticationManager; org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration; org.springframework.security.core.userdetails.UserDetailsService; org.springframework.security.oauth2.config.annotation.configurers.ClientDetailsServiceConfigurer; org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter; org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerEndpointsConfiguration; org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer; org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerSecurityConfigurer; org.springframework.security.oauth2.provider.token.TokenStore; org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter; org.springframework.security.oauth2.provider.token.store.JwtTokenStore; org.springframework.security.oauth2.provider.endpoint.FrameworkEndpoint; org.springframework.web.bind.annotation.GetMapping; org.springframework.web.bind.annotation.ResponseBody; org.springframework.security.config.annotation.web.builders.HttpSecurity; org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerSecurityConfiguration; org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; org.springframework.security.core.userdetails.User; org.springframework.security.provisioning.InMemoryUserDetailsManager; 'content-type: application/x-www-form-urlencoded', "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1ODU3NDcwNTksInVzZXJfbmFtZSI6InVzZXIiLCJhdXRob3JpdGllcyI6WyJST0xFX1VTRVIiXSwianRpIjoiYTk0M2QxZDgtYjYyOS00MjhjLTlhZDUtNjUxMWVhMTU5N2UxIiwiY2xpZW50X2lkIjoidGVzdC1jbGllbnQiLCJzY29wZSI6WyJhbnkiXX0.ktMUl20f0pbosR9S8MUGY5NmCiqPhQ2BJ1fn3_Gz7Asa01_d2IAhG0BC5vd1rVeAq8VbDPNSy1-ZWl9Y91KBas_2w4PqeaUbHadj4KnTeDm_50NqKKJfqdv2jfemj7CSY2tYb9VkLqqUPuYrWjmAJx-uz9BgqgE93hrYbd4ddeWlOavR1dSHl6U16EJPEX5T3aChQHedSSNlusAzpQoFA89HaPTtVevyyQ_DTSWPI-Mkt0P3W6yaMkWoUyVfzE6ImaHnNq7cR90pGtiqaOEG0vHXXXQ8rybsK3Yb56iP5ofm3AG-XI86zFdXEr1RVp-rZ_P4HqvgZr2yfSiaT0LklA", "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX25hbWUiOiJ1c2VyIiwic2NvcGUiOlsiYW55Il0sImF0aSI6ImE5NDNkMWQ4LWI2MjktNDI4Yy05YWQ1LTY1MTFlYTE1OTdlMSIsImV4cCI6MTU4ODI5NTg1OSwiYXV0aG9yaXRpZXMiOlsiUk9MRV9VU0VSIl0sImp0aSI6IjcyNWFjZTNmLTNkMDYtNDc4YS1hN2ViLTQ2M2M4NWI4YmRjMiIsImNsaWVudF9pZCI6InRlc3QtY2xpZW50In0.opm8NRHK_2fiBOB4rob3JLaXSilyfS2CiGYqHjvTL8Q4dVqh_u1BaamwD_xDFjt-t6MkU10rf1bz0I02KY-U26sd356HgyKbbxUeZUKBM2mTvAJX4h4jWhximM7t1weX-9zkQL7DLbohH5ci54RDdwgjcc7Woli3hEWcEqnklZkVgOTjNv1yNC0yEj-8b4eJBpb8adOsT98m69whD6oXXFLdd8ccyl2aoIX4F5e3wCFq3oaEXTuDzro1T3fsZyTPMmzeXxbMV4zz8-GU9pl7o-fc_hkmeez3G5VBUhNzjvchMy2hLtU97xe1w-Tlyh52BeQttLvubAScQpKWbFOIBA", "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1ODU3NDUwMTUsInVzZXJfbmFtZSI6InVzZXIiLCJhdXRob3JpdGllcyI6WyJST0xFX1VTRVIiXSwianRpIjoiN2U2MjhlN2QtMWQ0Yy00MjliLWFhYTEtYmE1ZWQ4M2Y4MzEyIiwiY2xpZW50X2lkIjoidGVzdC1jbGllbnQiLCJzY29wZSI6WyJhbnkiXX0.ZjsEMX2b-XorKShgTIWMnHE2E0blHM6zGEOIqiTrowGIHE2VthdTqG_m4wxU_KrZsDNrs8MvqoUJpfntbzgKGeQQLKpSZ91S-Pv7dtcrygMF5IGU-NuJQH7x56fyzdkTRiW6jJ0cDgo-qN0iMg9i9f86vQXjzNfAUb4oetRRA_Umn1hRIh4R969PdT6slo-_MpKjT9D62Bn3-rIR6KQRex1LZTrWfj3bKIlbqZpVCfqOcK3X25IsGOgk13fGtP9R9o6iYdcuoHHZLsXb6tBeOgTy7XXi6-9r5UzyRCrGddEBueojBCJHWy0rIu4ywqt20GgX_aqvaCgkgVxWCeWeNg", "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX25hbWUiOiJ1c2VyIiwic2NvcGUiOlsiYW55Il0sImF0aSI6IjdlNjI4ZTdkLTFkNGMtNDI5Yi1hYWExLWJhNWVkODNmODMxMiIsImV4cCI6MTU4ODI5MzgwMiwiYXV0aG9yaXRpZXMiOlsiUk9MRV9VU0VSIl0sImp0aSI6IjFlMzQ3YjIzLWJkNjMtNGU4OS1hOWYyLTc4OWUwMWY1MGM1YiIsImNsaWVudF9pZCI6InRlc3QtY2xpZW50In0.j6NNXVQgAxbwdqu_Cs9duF0Vc94kWmX7idAZ4clDSoOg-_iZnO01vpdrvX1KCcdtaIvQ2f2WnIlwiX_NsuNzeRehTFI3LQG_OJJEZ5rrGibh9uAuBiXQXIV7IyiiXHNvLGOc2FGVxuPn39cw2DW65KcdSPJSnpCjr2ERLggeIbp7cfpFaBbUnp5tUacrUeV_0RVG899W-DXQ39eXn3xFkOuAC8dYvygWUL5Dp3tA1K6aJkmN6ch_FTv2JdXSYQ11U7xbD9jTN7IA0RFQvTVwaBYVFa252ouOMQGx1SUobsNKYsUF9jcBS3QYpJYFf7vTLW4vER4a5YZGVupkGV8zTg", 'authorization: Bearer your_access_token_here.

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