# CertificateAuthenticationRequest
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Information about the client certificate to be used for authentication.

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

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/CertificateAuthenticationRequest) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/CertificateAuthenticationRequest) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/CertificateAuthenticationRequest)