Use ScheduleKeyDeletion with an AWS SDK or CLI

To schedule the deletion of a customer managed KMS key.

The following schedule-key-deletion example schedules the specified customer managed KMS key to be deleted in 15 days.

The --key-id parameter identifies the KMS key. This example uses a key ARN value, but you can use either the key ID or the ARN of the KMS key.The --pending-window-in-days parameter specifies the length of the 7-30 day waiting period. By default, the waiting period is 30 days. This example specifies a value of 15, which tells AWS to permanently delete the KMS key 15 days after the command completes.

aws kms schedule-key-deletion \
    --key-id arn:aws:kms:us-west-2:123456789012:key/1234abcd-12ab-34cd-56ef-1234567890ab \
    --pending-window-in-days 15

The response includes the key ARN, key state, waiting period (PendingWindowInDays), and the deletion date in Unix time. To view the deletion date in local time, use the AWS KMS console. KMS keys in the PendingDeletion key state cannot be used in cryptographic operations.

{
    "KeyId": "arn:aws:kms:us-west-2:123456789012:key/1234abcd-12ab-34cd-56ef-1234567890ab",
    "DeletionDate": "2022-06-18T23:43:51.272000+00:00",
    "KeyState": "PendingDeletion",
    "PendingWindowInDays": 15
}

For more information, see Deleting keys in the AWS Key Management Service Developer Guide.

    /**
     * Deletes a KMS key asynchronously.
     *
     * <p><strong>Warning:</strong> Deleting a KMS key is a destructive and potentially dangerous operation.
     * When a KMS key is deleted, all data that was encrypted under the KMS key becomes unrecoverable.
     * This means that any files, databases, or other data that were encrypted using the deleted KMS key
     * will become permanently inaccessible. Exercise extreme caution when deleting KMS keys.</p>
     *
     * @param keyId the ID of the KMS key to delete
     * @return a {@link CompletableFuture} that completes when the key deletion is scheduled
     */
    public CompletableFuture<Void> deleteKeyAsync(String keyId) {
        ScheduleKeyDeletionRequest deletionRequest = ScheduleKeyDeletionRequest.builder()
            .keyId(keyId)
            .pendingWindowInDays(7)
            .build();

        return getAsyncClient().scheduleKeyDeletion(deletionRequest)
            .thenRun(() -> {
                logger.info("Key {} will be deleted in 7 days", keyId);
            })
            .exceptionally(throwable -> {
                throw new RuntimeException("Failed to schedule key deletion for key ID: " + keyId, throwable);
            });
    }

    /***
     * @param string $keyId
     * @param int $pendingWindowInDays
     * @return void
     */
    public function scheduleKeyDeletion(string $keyId, int $pendingWindowInDays = 7)
    {
        try {
            $this->client->scheduleKeyDeletion([
                'KeyId' => $keyId,
                'PendingWindowInDays' => $pendingWindowInDays,
            ]);
        }catch(KmsException $caught){
            echo "There was a problem scheduling the key deletion: {$caught->getAwsErrorMessage()}\n";
            throw $caught;
        }
    }

class KeyManager:
    def __init__(self, kms_client):
        self.kms_client = kms_client
        self.created_keys = []

    @classmethod
    def from_client(cls) -> "KeyManager":
        """
        Creates a KeyManager instance with a default KMS client.

        :return: An instance of KeyManager initialized with the default KMS client.
        """
        kms_client = boto3.client("kms")
        return cls(kms_client)


    def delete_key(self, key_id: str, window: int) -> None:
        """
        Deletes a list of keys.

        Warning:
        Deleting a KMS key is a destructive and potentially dangerous operation. When a KMS key is deleted,
        all data that was encrypted under the KMS key is unrecoverable.

        :param key_id: The ARN or ID of the key to delete.
        :param window: The waiting period, in days, before the KMS key is deleted.
        """

        try:
            self.kms_client.schedule_key_deletion(
                KeyId=key_id, PendingWindowInDays=window
            )
        except ClientError as err:
            logging.error(
                "Couldn't delete key %s. Here's why: %s",
                key_id,
                err.response["Error"]["Message"],
            )
            raise