# CertificateAuthenticationRequest
<a name="API_CertificateAuthenticationRequest"></a>

Information about the client certificate to be used for authentication.

## Contents
<a name="API_CertificateAuthenticationRequest_Contents"></a>

 ** ClientRootCertificateChainArn **   
The ARN of the client certificate. The certificate must be signed by a certificate authority (CA) and it must be provisioned in Amazon Certificate Manager (ACM).  
Type: String  
Required: No

## See Also
<a name="API_CertificateAuthenticationRequest_SeeAlso"></a>

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/CertificateAuthenticationRequest) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/CertificateAuthenticationRequest) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/CertificateAuthenticationRequest)