[Yandex Cloud documentation](../../index.md) > [Terraform in Yandex Cloud](../index.md) > Terraform reference > Resources > Key Management Service > Resources > kms_symmetric_key

# yandex_kms_symmetric_key (Resource)

A symmetric KMS key that may contain several versions of the cryptographic material.

## Example usage

```terraform
//
// Create KMS Symmetric Key.
//
resource "yandex_kms_symmetric_key" "key-a" {
  name              = "example-symetric-key"
  description       = "description for key"
  default_algorithm = "AES_128"
  rotation_period   = "8760h" // equal to 1 year
}
```

## Arguments & Attributes Reference

- `created_at` (*Read-Only*) (String). The creation timestamp of the resource.
- `default_algorithm` (String). Encryption algorithm to be used with a new key version, generated with the next rotation. The default value is `AES_128`.
- `deletion_protection` (Bool). The `true` value means that resource is protected from accidental deletion.
- `description` (String). The resource description.
- `folder_id` (String). The folder identifier that resource belongs to. If it is not provided, the default provider `folder-id` is used.
- `id` (String). 
- `labels` (Map Of String). A set of key/value label pairs which assigned to resource.
- `name` (String). The resource name.
- `rotated_at` (*Read-Only*) (String). Last rotation timestamp of the key.
- `rotation_period` (String). Interval between automatic rotations. To disable automatic rotation, omit this parameter.
- `status` (*Read-Only*) (String). The status of the key.
- `symmetric_key_id` (String). The symmetric key ID.
- `timeouts` [Block]. 
  - `create` (String). A string that can be [parsed as a duration](https://pkg.go.dev/time#ParseDuration) consisting of numbers and unit suffixes, such as "30s" or "2h45m". Valid time units are "s" (seconds), "m" (minutes), "h" (hours).
  - `delete` (String). A string that can be [parsed as a duration](https://pkg.go.dev/time#ParseDuration) consisting of numbers and unit suffixes, such as "30s" or "2h45m". Valid time units are "s" (seconds), "m" (minutes), "h" (hours). Setting a timeout for a Delete operation is only applicable if changes are saved into state before the destroy operation occurs.
  - `read` (String). A string that can be [parsed as a duration](https://pkg.go.dev/time#ParseDuration) consisting of numbers and unit suffixes, such as "30s" or "2h45m". Valid time units are "s" (seconds), "m" (minutes), "h" (hours). Read operations occur during any refresh or planning operation when refresh is enabled.
  - `update` (String). A string that can be [parsed as a duration](https://pkg.go.dev/time#ParseDuration) consisting of numbers and unit suffixes, such as "30s" or "2h45m". Valid time units are "s" (seconds), "m" (minutes), "h" (hours).

## Import

The resource can be imported by using their `resource ID`. For getting it you can use Yandex Cloud [Web Console](https://console.yandex.cloud) or Yandex Cloud [CLI](../../cli/quickstart.md).

```shell
# terraform import yandex_kms_symmetric_key.<resource Name> <resource Id>
terraform import yandex_kms_symmetric_key.key-a abjjf**********p3gp8
```