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ClientAssertionCredential Class

  • Reference
Package:
com.azure.identity
Maven Artifact:
com.azure:azure-identity:1.14.1
  • java.lang.Object
    • com.azure.identity.ClientAssertionCredential

Implements

TokenCredential

public class ClientAssertionCredential
implements TokenCredential

The ClientAssertionCredential acquires a token via client assertion and service principal authentication. This authentication method provides a secure and scalable way for client applications to access Azure resources without the need for users to provide their credentials. It is often used in scenarios where a client application needs to access Azure resources on behalf of a user, such as in a multi-tier application architecture. In this authentication method, the client application creates a JSON Web Token (JWT) that includes information about the service principal (such as its client ID and tenant ID) and signs it using a client secret. The client then sends this token to Microsoft Entra ID as proof of its identity. Microsoft Entra ID verifies the token signature and checks that the service principal has the necessary permissions to access the requested Azure resource. If the token is valid and the service principal is authorized, Microsoft Entra ID issues an access token that the client application can use to access the requested resource. The ClientAssertionCredential acquires an access token with a client client assertion for a service principal/registered Microsoft Entra application. The tenantId, clientId, and clientAssertion of the service principal are required for this credential to acquire an access token. It can be used both in Azure-hosted and local development environments for authentication.

As a pre-requisite, a service principal is required to use this authentication mechanism. If you don't have a service principal, refer to create a service principal with Azure CLI.

Sample: Construct a simple ClientAssertionCredential

The following code sample demonstrates the creation of a ClientAssertionCredential, using the ClientAssertionCredentialBuilder to configure it. The tenantId, clientId and certificate parameters are required to create ClientAssertionCredential. Once this credential is created, it may be passed into the builder of many of the Azure SDK for Java client builders as the 'credential' parameter.

TokenCredential clientAssertionCredential = new ClientAssertionCredentialBuilder().tenantId(tenantId)
     .clientId(clientId)
     .clientAssertion(() -> "<Client-Assertion>")
     .build();

Sample: Construct a ClientAssertionCredential behind a proxy

The following code sample demonstrates the creation of a ClientAssertionCredential, using the ClientAssertionCredentialBuilder to configure it. The tenantId, clientId and clientAssertion parameters are required to create ClientAssertionCredential. THe proxyOptions can be optionally configured to target a proxy. Once this credential is created, it may be passed into the builder of many of the Azure SDK for Java client builders as the 'credential' parameter.

TokenCredential assertionCredential = new ClientAssertionCredentialBuilder().tenantId(tenantId)
     .clientId(clientId)
     .clientAssertion(() -> "<Client-Assertion>")
     .proxyOptions(new ProxyOptions(Type.HTTP, new InetSocketAddress("10.21.32.43", 5465)))
     .build();

Method Summary

Modifier and Type Method and Description
Mono<AccessToken> getToken(TokenRequestContext request)
AccessToken getTokenSync(TokenRequestContext request)

Methods inherited from java.lang.Object

clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Method Details

getToken

public Mono getToken(TokenRequestContext request)

Parameters:

request

getTokenSync

public AccessToken getTokenSync(TokenRequestContext request)

Parameters:

request

Applies to