Define the KMS key ID for encryption at rest. Encryption at Rest refers specifically to the encryption of data when written to an underlying storage system. This control determines whether the resource is encrypted at rest, and sets encryption to your desired level. The [Encryption at Rest](https://turbot.com/guardrails/docs/concepts/guardrails/encryption-at-rest) control compares the encryption settings against the encryption policies for the resource (`AWS &gt; SSM &gt; Parameter &gt; Encryption at Rest &gt; *`), raises an alarm, and takes the defined enforcement action Please make sure the key defined in the template has required permissions. ``` example: alias/aws/ebs ddc06e04-ce5f-4995-c758-c2b6c510e8fd arn:aws:kms:us-east-1:123456789012:key/ddc06e04-ce5f-4995-c758-c2b6c510e8fd arn:aws:kms:us-east-1:123456789012:alias/aws/ebs ```

AWS > SSM > Parameter > Encryption at Rest

Define the KMS key ID for encryption at rest.&#92;n&#92;nEncryption at Rest refers specifically to the encryption of data when written&#92;nto an underlying storage system. This control determines whether the resource&#92;nis encrypted at rest, and sets encryption to your desired level.&#92;n&#92;nThe [Encryption at Rest](https://turbot.com/guardrails/docs/concepts/guardrails/encryption-at-rest)&#92;ncontrol compares the encryption settings against the encryption policies for the resource&#92;n(`AWS &gt; SSM &gt; Parameter &gt; Encryption at Rest  &gt; *`),&#92;nraises an alarm, and takes the defined enforcement action&#92;n&#92;nPlease make sure the key defined in the template has required permissions.&#92;n&#92;n```&#92;nexample:&#92;n  alias/aws/ebs&#92;n  ddc06e04-ce5f-4995-c758-c2b6c510e8fd&#92;n  arn:aws:kms:us-east-1:123456789012:key/ddc06e04-ce5f-4995-c758-c2b6c510e8fd&#92;n  arn:aws:kms:us-east-1:123456789012:alias/aws/ebs&#92;n```&#92;n

Default template	`{{ $.defaultKey }}`
Default template input	`\| { defaultKey: policy(uri: "aws-kms#/policy/types/keyDefaultCustomerManagedKey") }`

Policy: AWS > SSM > Parameter > Encryption at Rest > Customer Managed Key

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