kong oauth2 client credentials example

OAuth is an open standard for authorization that lets clients obtain access to protected server resources on behalf of a resource owner. The resource owner could be a different client or the end user. OAuth also helps end users authorize third-party access to their server resources without having to share their credentials, such as user names and passwords.

This series of articles adheres to the OAuth 2.

Microsoft identity platform and the OAuth 2.0 client credentials flow

The complete OAuth 2. The authorization grant is a credential that represents the resource owner's authorization that can be used to access a protected resource. This credential is used by the client to obtain an access token, and this access token is eventually sent along with the request to access a protected resource.

OAuth 2.

kong oauth2 client credentials example

This four-part article series takes you through the implementation of an OAuth 2. In this second part, I explain how to implement the client credentials grant. The article describes this grant in detail and explains the sample client code that you can use to interface with any OAuth 2. By the end of the article you should have a complete understanding of the client implementation and be ready to download the sample client code for your own testing.

kong oauth2 client credentials example

It is assumed that the client is requesting access to protected resources that are under its own control client is the resource owner. A The OAuth 2. B The authorization server authenticates the OAuth 2. If valid, the authorization server issues an access token.

View image at full size. The access token request corresponds to step A, as described in Figure 1. Because the client authentication is being used as the authorization grant, no additional authorization is required. For example, the client makes the following HTTP request using transport-layer security:. The access token response corresponds to step B, as described in Figure python no module named secrets. If the access token request is valid and is authorized, the authorization server returns the access token.

A successful response is shown in Listing 2. If the request is not valid or is unauthorized, the authorization server returns an appropriate error message with code. The sample Outh2. The code is organized as a Java project, which can be imported into your Eclipse environment.

Download Eclipse from the Eclipse download page.You can use the OAuth 2. This type of grant is commonly used for server-to-server interactions that must run in the background, without immediate interaction with a user. These types of applications are often referred to as daemons or service accounts. This article describes how to program directly against the protocol in your application.

Also take a look at the sample apps that use MSAL. The OAuth 2. In this scenario, the client is typically a middle-tier web service, a daemon service, or a web site. For a higher level of assurance, the Microsoft identity platform also allows the calling service to use a certificate instead of a shared secret as a credential. The Microsoft identity platform endpoint doesn't support all Azure AD scenarios and features.

To determine whether you should use the Microsoft identity platform endpoint, read about Microsoft identity platform limitations.

Apigee Edge - 4MV4D - API Security - OAuth 2.0 Client Credentials Overview - S24E05

In the more typical three-legged OAutha client application is granted permission to access a resource on behalf of a specific user. The permission is delegated from the user to the application, usually during the consent process. However, in the client credentials two-legged OAuth flow, permissions are granted directly to the application itself. When the app presents a token to a resource, the resource enforces that the app itself has authorization to perform an action and not the user.

The entire client credentials flow looks similar to the following diagram. We describe each of the steps later in this article. These two methods are the most common in Azure AD and we recommend them for clients and resources that perform the client credentials flow.

A resource can also choose to authorize its clients in other ways. Each resource server can choose the method that makes the most sense for its application. A resource provider might enforce an authorization check based on a list of application client IDs that it knows and grants a specific level of access to.

When the resource receives a token from the Microsoft identity platform endpoint, it can decode the token and extract the client's application ID from the appid and iss claims. Then it compares the application against an access control list ACL that it maintains.

The ACL's granularity and method might vary substantially between resources. The web API might grant only a subset of full permissions to a specific client. To run end-to-end tests on the API, create a test client that acquires tokens from the Microsoft identity platform endpoint and then sends them to the API.

Spring Boot + OAuth 2 Client Credentials Grant - Hello World Example

If you use this kind of ACL, be sure to validate not only the caller's appid value but also validate that the iss value of the token is trusted. This type of authorization is common for daemons and service accounts that need to access data owned by consumer users who have personal Microsoft accounts.

For data owned by organizations, we recommend that you get the necessary authorization through application permissions. An application permission is granted to an application by an organization's administrator, and can be used only to access data owned by that organization and its employees. For example, Microsoft Graph exposes several application permissions to do the following:.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This is a simple node. We assume Kong is running at This results in an error now generated by Kongsince the proper credentials for access are missing.

To start the authorization flow we need to simulate the request that the client application will execute when redirecting the user to your API. Note: In our example we are skipping the log-in of the user, which is something you will do in production before showing the authorization page. You will see a page like:. From a provider perspective our job only consists in showing the authorization page and redirecting the user.

The result should be a json response once again, containing an echo of the request that was sent.

OAuth 2.0 Authentication

Since the proper token was included, Kong will now validate the token and allow access again. Note in the response that Kong injected a number of extra headers before sending the request to the upstream service:. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. JavaScript Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit.OAuth 2. For example, an application can use OAuth 2. This OAuth 2. It is designed for applications that can store confidential information and maintain state. A properly authorized web server application can access an API while the user interacts with the application or after the user has left the application.

Web server applications frequently also use service accounts to authorize API requests, particularly when calling Cloud APIs to access project-based data rather than user-specific data.

Web server applications can use service accounts in conjunction with user authorization. To run the code samples, you must first install the client library for your language.

For example, it determines when the application can use or refresh stored access tokens as well as when the application must reacquire consent. The client library also generates correct redirect URLs and helps to implement redirect handlers that exchange authorization codes for access tokens.

Any application that uses OAuth 2. The following steps explain how to create credentials for your project.

OAuth 2.0 - Client Credentials

Your applications can then use the credentials to access APIs that you have enabled for that project. We recommend that you design your app's auth endpoints so that your application does not expose authorization codes to other resources on the page.

Securely store the file in a location that only your application can access. Scopes enable your application to only request access to the resources that it needs while also enabling users to control the amount of access that they grant to your application. Thus, there may be an inverse relationship between the number of scopes requested and the likelihood of obtaining user consent. Before you start implementing OAuth 2.

We also recommend that your application request access to authorization scopes via an incremental authorization process, in which your application requests access to user data in context. This best practice helps users to more easily understand why your application needs the access it is requesting.

The OAuth 2.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Already on GitHub? Sign in to your account. What am I doing wrong on Step 6? What is the expected output of this command? The scope was defined while enabling auth plugin with the option config.

I tried following as per suggestion but got error response. When you request the access token, you must specify a scope parameter. Please see request and response below. Make sure the final API is up and running, it seems to be down or crashing. Thanks for the response.

kong oauth2 client credentials example

Another question - How scope is used in Oauth authentication? It is not clear how scope can be be used for authorization. You can define available scopes and decide if they should be mandatory or not. When you authenticated a user with a specific scope, the authenticated scope is passed into a X-Authenticated-Scope upstream request header. In Kong, you can do one thing.

It worked for me. My Oauth is working as expected on Kong. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up.When generating these strings, there are some important things to consider in terms of security and aesthetics. It must also be unique across all clients that the authorization server handles.

If the client ID is guessable, it makes it slightly easier to craft phishing attacks against arbitrary applications. Because of this, you should ask the developer what type of application they are creating when they start. It must be sufficiently random to not be guessable, which means you should avoid using common UUID libraries which often take into account the timestamp or MAC address of the server generating it.

A great way to generate a secure secret is to use a cryptographically-secure library to generate a bit value and converting it to a hexadecimal representation. This way when developers copy and paste the ID and secret, it is easy to recognize which is which. Because these are essentially equivalent to a username and password, you should not store the secret in plain text, instead only store an encrypted or hashed version, to help reduce the likelihood of the secret leaking.

When you issue the client ID and secret, you will need to display them to the developer. Most services provide a way for developers to retrieve the secret of an existing application, although some will only display the secret one time and require the developer store it themselves immediately. If you display the secret only one time, you can store a hashed version of it to avoid storing the plaintext secret at all.

If you store the secret in a way that can be displayed later to developers, you should take extra precautions when revealing the secret. The service asks the developer to confirm their password before it will reveal the secret. Here are some examples of client IDs from services that support OAuth 2. In Ruby, you can use the SecureRandom library to generate a hex string: require 'securerandom' SecureRandom.

GitHub asks to confirm your password when making sensitive changes The service asks the developer to confirm their password before it will reveal the secret. Previous Chapter Registering a New Application.Add an OAuth 2. For its regular work, the plugin needs to both generate and delete tokens, and commit those changes to the database, which is not compatible with DB-less. None of them would work on DB-less. Configure this plugin on a Service by making the following request:. Configure this plugin on a Service by adding this section to your declarative configuration file:.

A plugin which is not associated to any Service, Route, or Consumer or API, if you are using an older version of Kong is considered "global", and will be run on every request. Read the Plugin Reference and the Plugin Precedence sections for more information. An optional boolean value telling the plugin to require at least one scope to be authorized by the end user.

An optional integer value telling the plugin how many seconds a token should last, after which the client will need to refresh the token. Set to 0 to disable the expiration. An optional boolean value to enable the Implicit Grant flow which allows to provision a token as a result of the authorization process RFC Section 4. The name of the header supposed to carry the access token. Default: authorization. An optional boolean value telling the plugin to show or hide the credential from the upstream service.

If truethe plugin will strip the credential from the request i. Accepts HTTPs requests that have already been terminated by a proxy or load balancer and the x-forwarded-proto: https header has been added to the request.

Only enable this option if the Kong server cannot be publicly accessed and the only entry-point is such proxy or load balancer.

If empty defaultthe request will fail with an authentication failure 4xx. An optional boolean value that allows to use the same OAuth credentials generated by the plugin with any other Service whose OAuth 2. Default value is 2 weeks. Once applied, any user with a valid credential can access the Service.

To restrict usage to only some of the authenticated users, also add the ACL plugin not covered here and create whitelist or blacklist groups of users. In order to use the plugin, you first need to create a consumer to associate one or more credentials to. The Consumer represents a developer using the upstream service.


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