IDO2, combined with WebAuthn, uses a challenge-response mechanism to authenticate users. This process involves a series of cryptographic requests and responses, ensuring that only the rightful users can access their account. Here’s a simplified look at how this works.
A user signs up on a web scanner and a security key, such as a USB device or a biometric scanner, and enters a PIN for verification. This setup process ensures that only the user can authenticate himself/herself in the future. This mechanism is not just limited to personal accounts but is also integrated into enterprise solutions. For instance, Microsoft’s cloud services, including Active Directory and Entra, utilise security keys as a secure method for users to sign in. Microsoft Entra is a cloud based identity and access management (IAM) solution for an organisation. It keeps a record of the roles and responsibilities of its members with the help of their ID known as Entra ID.
How data is managed
All information related to Entra ID is securely stored in Microsoft Graph, a platform that requires Graph API calls to perform various operations. Graph API is an HTTPbased API that apps can use to programmatically query data and perform a wide variety of other tasks. Typically, these operations are carried out through a user-friendly graphical interface. However, for developers and IT administrators, understanding the behind-the-scenes mechanics of these API calls is essential.
Accessing the Graph API
There are two primary methods to access the Graph API.
Delegated permissions: This method allows an application to access the API on behalf of the signed-in user. It’s particularly useful when the application needs to perform actions as the user.
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