Query: dynamodb_table_encrypted_with_kms_cmk

select
  address as resource,
  case
    -- // kms_key_arn - This attribute should only be specified if the key is different from the default DynamoDB CMK, alias/aws/dynamodb.
    -- This query only checks if table is encrypted by default AWS KMS i.e. If enabled is false then server-side encryption is set to AWS owned CMK
    when (attributes_std -> 'server_side_encryption' ->> 'enabled')::bool is false then 'alarm'
    when (attributes_std -> 'server_side_encryption'->> 'enabled')::bool is true and (attributes_std -> 'server_side_encryption' ->> 'kms_key_arn') is not null then 'ok'
    else 'alarm'
  end status,
  split_part(address, '.', 2) || case
    when (attributes_std -> 'server_side_encryption' ->> 'enabled')::bool is false then ' encrypted by DynamoDB managed and owned AWS KMS key'
    when (attributes_std -> 'server_side_encryption'->> 'enabled')::bool is true and (attributes_std -> 'server_side_encryption' ->> 'kms_key_arn') is not null then ' encrypted by AWS managed CMK'
    else ' not encrypted by AWS managed CMK'
  end || '.' as reason
  
  , path || ':' || start_line
from
  terraform_resource
where
  type = 'aws_dynamodb_table';