# Certificate
<a name="API_Certificate"></a>

Information about a certificate.

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

 ** certificateArn **   <a name="iot-Type-Certificate-certificateArn"></a>
The ARN of the certificate.  
Type: String  
Required: No

 ** certificateId **   <a name="iot-Type-Certificate-certificateId"></a>
The ID of the certificate. (The last part of the certificate ARN contains the certificate ID.)  
Type: String  
Length Constraints: Fixed length of 64.  
Pattern: `(0x)?[a-fA-F0-9]+`   
Required: No

 ** certificateMode **   <a name="iot-Type-Certificate-certificateMode"></a>
The mode of the certificate.  
 `DEFAULT`: A certificate in `DEFAULT` mode is either generated by AWS IoT Core or registered with an issuer certificate authority (CA) in `DEFAULT` mode. Devices with certificates in `DEFAULT` mode aren't required to send the Server Name Indication (SNI) extension when connecting to AWS IoT Core. However, to use features such as custom domains and VPC endpoints, we recommend that you use the SNI extension when connecting to AWS IoT Core.  
 `SNI_ONLY`: A certificate in `SNI_ONLY` mode is registered without an issuer CA. Devices with certificates in `SNI_ONLY` mode must send the SNI extension when connecting to AWS IoT Core.   
Type: String  
Valid Values: `DEFAULT | SNI_ONLY`   
Required: No

 ** creationDate **   <a name="iot-Type-Certificate-creationDate"></a>
The date and time the certificate was created.  
Type: Timestamp  
Required: No

 ** status **   <a name="iot-Type-Certificate-status"></a>
The status of the certificate.  
The status value REGISTER\$1INACTIVE is deprecated and should not be used.  
Type: String  
Valid Values: `ACTIVE | INACTIVE | REVOKED | PENDING_TRANSFER | REGISTER_INACTIVE | PENDING_ACTIVATION`   
Required: No

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

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/iot-2015-05-28/Certificate) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iot-2015-05-28/Certificate) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iot-2015-05-28/Certificate)