Key Management Service API, gRPC: SymmetricKeyService.Create

Written by

Yandex Cloud

Updated at April 24, 2025

gRPC request
CreateSymmetricKeyRequest
operation.Operation
CreateSymmetricKeyMetadata
SymmetricKey
SymmetricKeyVersion

Creates a symmetric KMS key in the specified folder.

gRPC request

rpc Create (CreateSymmetricKeyRequest) returns (operation.Operation)

CreateSymmetricKeyRequest

{
  "folder_id": "string",
  "name": "string",
  "description": "string",
  "labels": "map<string, string>",
  "default_algorithm": "SymmetricAlgorithm",
  "rotation_period": "google.protobuf.Duration",
  "deletion_protection": "bool"
}

Field	Description
folder_id	string Required field. ID of the folder to create a symmetric KMS key in.
name	string Name of the key.
description	string Description of the key.
labels	object (map<string, string>) Custom labels for the symmetric KMS key as `key:value` pairs. Maximum 64 per key. For example, `"project": "mvp"` or `"source": "dictionary"`.
default_algorithm	enum SymmetricAlgorithm Required field. Encryption algorithm to be used with a new key version, generated with the next rotation. `SYMMETRIC_ALGORITHM_UNSPECIFIED` `AES_128`: AES algorithm with 128-bit keys. `AES_192`: AES algorithm with 192-bit keys. `AES_256`: AES algorithm with 256-bit keys. `AES_256_HSM`: AES algorithm with 256-bit keys hosted by HSM
rotation_period	google.protobuf.Duration Interval between automatic rotations. To disable automatic rotation, don't include this field in the creation request.
deletion_protection	bool Flag that inhibits deletion of the symmetric KMS key

operation.Operation

{
  "id": "string",
  "description": "string",
  "created_at": "google.protobuf.Timestamp",
  "created_by": "string",
  "modified_at": "google.protobuf.Timestamp",
  "done": "bool",
  "metadata": {
    "key_id": "string",
    "primary_version_id": "string"
  },
  // Includes only one of the fields `error`, `response`
  "error": "google.rpc.Status",
  "response": {
    "id": "string",
    "folder_id": "string",
    "created_at": "google.protobuf.Timestamp",
    "name": "string",
    "description": "string",
    "labels": "map<string, string>",
    "status": "Status",
    "primary_version": {
      "id": "string",
      "key_id": "string",
      "status": "Status",
      "algorithm": "SymmetricAlgorithm",
      "created_at": "google.protobuf.Timestamp",
      "primary": "bool",
      "destroy_at": "google.protobuf.Timestamp",
      "hosted_by_hsm": "bool"
    },
    "default_algorithm": "SymmetricAlgorithm",
    "rotated_at": "google.protobuf.Timestamp",
    "rotation_period": "google.protobuf.Duration",
    "deletion_protection": "bool"
  }
  // end of the list of possible fields
}

An Operation resource. For more information, see Operation.

Field	Description
id	string ID of the operation.
description	string Description of the operation. 0-256 characters long.
created_at	google.protobuf.Timestamp Creation timestamp.
created_by	string ID of the user or service account who initiated the operation.
modified_at	google.protobuf.Timestamp The time when the Operation resource was last modified.
done	bool If the value is `false`, it means the operation is still in progress. If `true`, the operation is completed, and either `error` or `response` is available.
metadata	CreateSymmetricKeyMetadata Service-specific metadata associated with the operation. It typically contains the ID of the target resource that the operation is performed on. Any method that returns a long-running operation should document the metadata type, if any.
error	google.rpc.Status The error result of the operation in case of failure or cancellation. Includes only one of the fields `error`, `response`. The operation result. If `done == false` and there was no failure detected, neither `error` nor `response` is set. If `done == false` and there was a failure detected, `error` is set. If `done == true`, exactly one of `error` or `response` is set.
response	SymmetricKey The normal response of the operation in case of success. If the original method returns no data on success, such as Delete, the response is google.protobuf.Empty. If the original method is the standard Create/Update, the response should be the target resource of the operation. Any method that returns a long-running operation should document the response type, if any. Includes only one of the fields `error`, `response`. The operation result. If `done == false` and there was no failure detected, neither `error` nor `response` is set. If `done == false` and there was a failure detected, `error` is set. If `done == true`, exactly one of `error` or `response` is set.

CreateSymmetricKeyMetadata

Field

Description

key_id

string

ID of the key being created.

primary_version_id

string

ID of the primary version of the key being created.

SymmetricKey

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

Field	Description
id	string ID of the key.
folder_id	string ID of the folder that the key belongs to.
created_at	google.protobuf.Timestamp Time when the key was created.
name	string Name of the key.
description	string Description of the key.
labels	object (map<string, string>) Custom labels for the key as `key:value` pairs. Maximum 64 per key.
status	enum Status Current status of the key. `STATUS_UNSPECIFIED` `CREATING`: The key is being created. `ACTIVE`: The key is active and can be used for encryption and decryption. Can be set to INACTIVE using the SymmetricKeyService.Update method. `INACTIVE`: The key is inactive and unusable. Can be set to ACTIVE using the SymmetricKeyService.Update method.
primary_version	SymmetricKeyVersion Primary version of the key, used as the default for all encrypt/decrypt operations, when no version ID is specified.
default_algorithm	enum SymmetricAlgorithm Default encryption algorithm to be used with new versions of the key. `SYMMETRIC_ALGORITHM_UNSPECIFIED` `AES_128`: AES algorithm with 128-bit keys. `AES_192`: AES algorithm with 192-bit keys. `AES_256`: AES algorithm with 256-bit keys. `AES_256_HSM`: AES algorithm with 256-bit keys hosted by HSM
rotated_at	google.protobuf.Timestamp Time of the last key rotation (time when the last version was created). Empty if the key does not have versions yet.
rotation_period	google.protobuf.Duration Time period between automatic key rotations.
deletion_protection	bool Flag that inhibits deletion of the key

SymmetricKeyVersion

Symmetric KMS key version: metadata about actual cryptographic data.

Field	Description
id	string ID of the key version.
key_id	string ID of the symmetric KMS key that the version belongs to.
status	enum Status Status of the key version. `STATUS_UNSPECIFIED` `ACTIVE`: The version is active and can be used for encryption and decryption. `SCHEDULED_FOR_DESTRUCTION`: The version is scheduled for destruction, the time when it will be destroyed is specified in the `SymmetricKeyVersion.destroy_at` field. `DESTROYED`: The version is destroyed and cannot be recovered.
algorithm	enum SymmetricAlgorithm Encryption algorithm that should be used when using the key version to encrypt plaintext. `SYMMETRIC_ALGORITHM_UNSPECIFIED` `AES_128`: AES algorithm with 128-bit keys. `AES_192`: AES algorithm with 192-bit keys. `AES_256`: AES algorithm with 256-bit keys. `AES_256_HSM`: AES algorithm with 256-bit keys hosted by HSM
created_at	google.protobuf.Timestamp Time when the key version was created.
primary	bool Indication of a primary version, that is to be used by default for all cryptographic operations that don't have a key version explicitly specified.
destroy_at	google.protobuf.Timestamp Time when the key version is going to be destroyed. Empty unless the status is `SCHEDULED_FOR_DESTRUCTION`.
hosted_by_hsm	bool Indication of the version that is hosted by HSM.

Key Management Service API, gRPC: SymmetricKeyService.Create

gRPC requestgRPC request

CreateSymmetricKeyRequestCreateSymmetricKeyRequest

operation.Operationoperation.Operation

CreateSymmetricKeyMetadataCreateSymmetricKeyMetadata

SymmetricKeySymmetricKey

SymmetricKeyVersionSymmetricKeyVersion