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# AWS::Cassandra::Table EncryptionSpecification
<a name="aws-properties-cassandra-table-encryptionspecification"></a>

Specifies the encryption at rest option selected for the table. 

## Syntax
<a name="aws-properties-cassandra-table-encryptionspecification-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-cassandra-table-encryptionspecification-syntax.json"></a>

```
{
  "[EncryptionType](#cfn-cassandra-table-encryptionspecification-encryptiontype)" : String,
  "[KmsKeyIdentifier](#cfn-cassandra-table-encryptionspecification-kmskeyidentifier)" : String
}
```

### YAML
<a name="aws-properties-cassandra-table-encryptionspecification-syntax.yaml"></a>

```
  [EncryptionType](#cfn-cassandra-table-encryptionspecification-encryptiontype): String
  [KmsKeyIdentifier](#cfn-cassandra-table-encryptionspecification-kmskeyidentifier): String
```

## Properties
<a name="aws-properties-cassandra-table-encryptionspecification-properties"></a>

`EncryptionType`  <a name="cfn-cassandra-table-encryptionspecification-encryptiontype"></a>
The encryption at rest options for the table.  
+ **AWS owned key** (default) - `AWS_OWNED_KMS_KEY`
+ **Customer managed key** - `CUSTOMER_MANAGED_KMS_KEY`
**Important**  
If you choose `CUSTOMER_MANAGED_KMS_KEY`, a `kms_key_identifier` in the format of a key ARN is required. 
Valid values: `CUSTOMER_MANAGED_KMS_KEY` \$1 `AWS_OWNED_KMS_KEY`.   
*Required*: Yes  
*Type*: String  
*Allowed values*: `AWS_OWNED_KMS_KEY | CUSTOMER_MANAGED_KMS_KEY`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`KmsKeyIdentifier`  <a name="cfn-cassandra-table-encryptionspecification-kmskeyidentifier"></a>
Requires a `kms_key_identifier` in the format of a key ARN.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)