KeyMetadata

Contains metadata about a KMS key.

This data type is used as a response element for the CreateKey, DescribeKey, and ReplicateKey operations.

Note

In the following list, the required parameters are described first.

KeyId

The globally unique identifier for the KMS key.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Required: Yes

Arn

The Amazon Resource Name (ARN) of the KMS key. For examples, see Amazon Key Management Service (Amazon KMS) in the Example ARNs section of the Amazon General Reference.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Required: No

AWSAccountId

The twelve-digit account ID of the Amazon Web Services account that owns the KMS key.

Type: String

Required: No

CloudHsmClusterId

The cluster ID of the Amazon CloudHSM cluster that contains the key material for the KMS key. When you create a KMS key in an Amazon CloudHSM custom key store, Amazon KMS creates the key material for the KMS key in the associated Amazon CloudHSM cluster. This field is present only when the KMS key is created in an Amazon CloudHSM key store.

Type: String

Length Constraints: Minimum length of 19. Maximum length of 24.

Pattern: cluster-[2-7a-zA-Z]{11,16}

Required: No

CreationDate

The date and time when the KMS key was created.

Type: Timestamp

Required: No

CustomerMasterKeySpec

This member has been deprecated.

Instead, use the KeySpec field.

The KeySpec and CustomerMasterKeySpec fields have the same value. We recommend that you use the KeySpec field in your code. However, to avoid breaking changes, Amazon KMS supports both fields.

Type: String

Required: No

CustomKeyStoreId

A unique identifier for the custom key store that contains the KMS key. This field is present only when the KMS key is created in a custom key store.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 64.

Required: No

DeletionDate

The date and time after which Amazon KMS deletes this KMS key. This value is present only when the KMS key is scheduled for deletion, that is, when its KeyState is PendingDeletion.

When the primary key in a multi-Region key is scheduled for deletion but still has replica keys, its key state is PendingReplicaDeletion and the length of its waiting period is displayed in the PendingDeletionWindowInDays field.

Type: Timestamp

Required: No

Description

The description of the KMS key.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 8192.

Required: No

Enabled

Specifies whether the KMS key is enabled. When KeyState is Enabled this value is true, otherwise it is false.

Type: Boolean

Required: No

EncryptionAlgorithms

The encryption algorithms that the KMS key supports. You cannot use the KMS key with other encryption algorithms within Amazon KMS.

This value is present only when the KeyUsage of the KMS key is ENCRYPT_DECRYPT.

Type: Array of strings

Valid Values: SYMMETRIC_DEFAULT | RSAES_OAEP_SHA_1 | RSAES_OAEP_SHA_256 | SM2PKE

Required: No

ExpirationModel

Specifies whether the KMS key's key material expires. This value is present only when Origin is EXTERNAL, otherwise this value is omitted.

Type: String

Valid Values: KEY_MATERIAL_EXPIRES | KEY_MATERIAL_DOES_NOT_EXPIRE

Required: No

KeyManager

The manager of the KMS key. KMS keys in your Amazon Web Services account are either customer managed or Amazon managed. For more information about the difference, see KMS keys in the Amazon Key Management Service Developer Guide.

Type: String

Valid Values: AWS | CUSTOMER

Required: No

KeySpec

Describes the type of key material in the KMS key.

Type: String

Required: No

KeyState

The current status of the KMS key.

For more information about how key state affects the use of a KMS key, see Key states of Amazon KMS keys in the Amazon Key Management Service Developer Guide.

Type: String

Required: No

KeyUsage

The cryptographic operations for which you can use the KMS key.

Type: String

Valid Values: SIGN_VERIFY | ENCRYPT_DECRYPT | GENERATE_VERIFY_MAC

Required: No

MacAlgorithms

The message authentication code (MAC) algorithm that the HMAC KMS key supports.

This value is present only when the KeyUsage of the KMS key is GENERATE_VERIFY_MAC.

Type: Array of strings

Valid Values: HMAC_SHA_224 | HMAC_SHA_256 | HMAC_SHA_384 | HMAC_SHA_512

Required: No

MultiRegion

Indicates whether the KMS key is a multi-Region (True) or regional (False) key. This value is True for multi-Region primary and replica keys and False for regional KMS keys.

For more information about multi-Region keys, see Multi-Region keys in Amazon KMS in the Amazon Key Management Service Developer Guide.

Type: Boolean

Required: No

MultiRegionConfiguration

Lists the primary and replica keys in same multi-Region key. This field is present only when the value of the MultiRegion field is True.

For more information about any listed KMS key, use the DescribeKey operation.

MultiRegionKeyType indicates whether the KMS key is a PRIMARY or REPLICA key.
PrimaryKey displays the key ARN and Region of the primary key. This field displays the current KMS key if it is the primary key.
ReplicaKeys displays the key ARNs and Regions of all replica keys. This field includes the current KMS key if it is a replica key.

Type: MultiRegionConfiguration object

Required: No

Origin

The source of the key material for the KMS key. When this value is AWS_KMS, Amazon KMS created the key material. When this value is EXTERNAL, the key material was imported or the KMS key doesn't have any key material. When this value is AWS_CLOUDHSM, the key material was created in the Amazon CloudHSM cluster associated with a custom key store.

Type: String

Valid Values: AWS_KMS | EXTERNAL | AWS_CLOUDHSM | EXTERNAL_KEY_STORE

Required: No

PendingDeletionWindowInDays

The waiting period before the primary key in a multi-Region key is deleted. This waiting period begins when the last of its replica keys is deleted. This value is present only when the KeyState of the KMS key is PendingReplicaDeletion. That indicates that the KMS key is the primary key in a multi-Region key, it is scheduled for deletion, and it still has existing replica keys.

When a single-Region KMS key or a multi-Region replica key is scheduled for deletion, its deletion date is displayed in the DeletionDate field. However, when the primary key in a multi-Region key is scheduled for deletion, its waiting period doesn't begin until all of its replica keys are deleted. This value displays that waiting period. When the last replica key in the multi-Region key is deleted, the KeyState of the scheduled primary key changes from PendingReplicaDeletion to PendingDeletion and the deletion date appears in the DeletionDate field.

Type: Integer

Valid Range: Minimum value of 1. Maximum value of 365.

Required: No

SigningAlgorithms

The signing algorithms that the KMS key supports. You cannot use the KMS key with other signing algorithms within Amazon KMS.

This field appears only when the KeyUsage of the KMS key is SIGN_VERIFY.

Type: Array of strings

Required: No

ValidTo

The time at which the imported key material expires. When the key material expires, Amazon KMS deletes the key material and the KMS key becomes unusable. This value is present only for KMS keys whose Origin is EXTERNAL and whose ExpirationModel is KEY_MATERIAL_EXPIRES, otherwise this value is omitted.

Type: Timestamp

Required: No

XksKeyConfiguration

Information about the external key that is associated with a KMS key in an external key store.

For more information, see External key in the Amazon Key Management Service Developer Guide.

Type: XksKeyConfigurationType object

Required: No

KeyMetadata

Contents

Note

See Also