API authentication is often used alongside API authorization, but they are not the same thing. While API authentication involves verifying a user's identity, API authorization is the process of checking whether a user has the correct permissions to perform a specific task.

API authentication and authorization in API Management involve securing the end-to-end communication of client apps to the API Management gateway and through to backend APIs. In many customer environments, OAuth 2.0 is the preferred API authorization protocol.

In the following example, the API calls can be authenticated using either an API key or OAuth 2. The ApiKeyAuth and OAuth2 names refer to the schemes previously defined in securitySchemes. For each scheme, you specify a list of security scopes required for API calls (see below).

In this guide, we will explore several common API authentication methods, including Basic Auth, API keys, OAuth, OpenID Connect (OIDC), Integration System User (ISU), Hash-Based Message Authentication Code (HMAC), and Certificate Signing Request (CSR).

Nov 29, 2024 · In this article, we will explore the importance of authorization in APIs, the various authorization methods that can be used, and the role of API toolkits in helping to ease the process of authorization in APIs.

Feb 9, 2022 · Authentication and Authorization in REST WebServices are two very important concepts in the context of REST API. The majority of the time you will be hitting REST API's which are secured. By secure, we mean that the APIs which require you to provide identification. Identification can be provided in the form of.

Nov 6, 2023 · In this article, we will explore the fundamentals of securing RESTful APIs with a focus on authentication and authorization, using Java, Gradle, and JAX-RS as our primary tools. Before...

Oct 6, 2021 · In this article, we'll show you our best practices for implementing authorization in REST APIs. Every web API should use TLS (Transport Layer Security). TLS protects the information your API sends (and the information that users send to your API) by encrypting your messages while they're in transit.

Apr 4, 2025 · The authorization grant type is set to CLIENT_CREDENTIALS, indicating that the client will use the OAuth 2.0 Client Credentials flow to obtain access tokens. The client authentication method is set to CLIENT_SECRET_POST, which specifies that the client will send client ID and secret as parameters in an HTTP POST request.

Jan 4, 2025 · API authentication is the process of verifying the identity of the client making the request. It ensures that the client is who they claim to be and helps protect sensitive data. The most common ways to authenticate users in API requests are by using API keys, Basic Authentication or more sophisticated protocols like OAuth.