# ExtensionsV3
<a name="API_ExtensionsV3"></a>

Certificate extensions for v3 template schema

## Contents
<a name="API_ExtensionsV3_Contents"></a>

 ** KeyUsage **   <a name="PcaConnectorAd-Type-ExtensionsV3-KeyUsage"></a>
The key usage extension defines the purpose (e.g., encipherment, signature, certificate signing) of the key contained in the certificate.  
Type: [KeyUsage](API_KeyUsage.md) object  
Required: Yes

 ** ApplicationPolicies **   <a name="PcaConnectorAd-Type-ExtensionsV3-ApplicationPolicies"></a>
Application policies specify what the certificate is used for and its purpose.  
Type: [ApplicationPolicies](API_ApplicationPolicies.md) object  
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/pca-connector-ad-2018-05-10/ExtensionsV3) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/pca-connector-ad-2018-05-10/ExtensionsV3) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/pca-connector-ad-2018-05-10/ExtensionsV3)