Migrate from CSE-KMS to SSE-KMS - Amazon Athena
Update workgroup query results encryption settingsUpdate client-side query results encryption settings
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Migrate from CSE-KMS to SSE-KMS

You can specify CSE-KMS encryption in two ways – during the workgroup query results encryption configuration and in the client-side settings. For more information, see Encrypt Athena query results stored in Amazon S3. During the migration process, it's important to audit your existing workflows that read and write CSE-KMS data, identify workgroups where CSE-KMS is configured, and locate instances where CSE-KMS is set through client-side parameters.

Update workgroup query results encryption settings

Console
To update encryption settings in the Athena console

  1. Open the Athena console at https://console.aws.amazon.com/athena/.

  2. In the Athena console navigation pane, choose Workgroups.

  3. On the Workgroups page, select the button for the workgroup that you want to edit.

  4. Choose Actions, Edit.

  5. Open Query result configuration and choose Encrypt query results.

  6. For Encryption type section, choose SSE_KMS encryption option.

  7. Enter your KMS key under Choose a different Amazon KMS key (advanced).

  8. Choose Save changes. The updated workgroup appears in the list on the Workgroups page.

CLI

Run the following command to update your query results encryption configuration to SSE-KMS in your workgroup.

aws athena update-work-group \
    --work-group "my-workgroup" \
    --configuration-updates '{
        "ResultConfigurationUpdates": {
            "EncryptionConfiguration": {
                "EncryptionOption": "SSE_KMS",
                "KmsKey": "<my-kms-key>"
            }
        }
    }'

Update client-side query results encryption settings

Console

To update your client-side settings for query results encryption from CSE-KMS to SSE-KMS, see Encrypt Athena query results stored in Amazon S3.

CLI

You can only specify query results encryption configuration in client-side settings with the start-query-execution command. If you run this CLI command and override the query results encryption configuration that you specified in your workgroup with CSE-KMS, change the command to encrypt query results using SSE_KMS as following.

aws athena start-query-execution \
    --query-string "SELECT * FROM <my-table>;" \
    --query-execution-context "Database=<my-database>,Catalog=<my-catalog>" \
    --result-configuration '{
        "EncryptionConfiguration": {
            "EncryptionOption": "SSE_KMS",
            "KmsKey": "<my-kms-key>"
        }
    }' \
    --work-group "<my-workgroup>"
Note

  • After you update the workgroup or client-side settings, any new data that you insert by write queries uses the SSE-KMS encryption instead of CSE-KMS. This is because query results encryption configurations also apply to newly inserted table data. Athena query result, metadata, and manifest files are also encrypted with SSE-KMS.

  • Athena can still read tables with the has_encrypted_data table property even when there are a mix of CSE-KMS encrypted and SSE-S3/SSE-KMS objects.