A unique identifier used to authenticate a non-human entity to access an API.
Description
API Keys are alphanumeric strings that serve as a means of identifying and authenticating applications or services in non-human identity management systems. When a non-human identity, such as a server or an application, wants to access a specific API, it sends the API key along with the request. The API server checks the key against its database of authorized keys to determine whether to grant or deny access. This mechanism helps to ensure that only legitimate applications can interact with the API, thereby enhancing security. API keys can be associated with specific permissions, allowing granular control over what each key can access or perform within the API. It's important to keep API keys confidential, as they can provide access to sensitive data or functionalities. Furthermore, API keys can be rotated or revoked as needed, providing a way to manage access over time.
Examples
- A weather application using an API key to retrieve current weather data from a meteorological service.
- A payment processing service requiring an API key to authorize transactions from a third-party application.
Additional Information
- API keys should be stored securely and not hard-coded in applications.
- Some APIs also support additional security measures, such as IP whitelisting or OAuth, in conjunction with API keys.