CreateKey - AWS Key Management Service
Request SyntaxRequest ParametersResponse SyntaxResponse ElementsErrorsExamplesSee Also

CreateKey

Creates a unique customer managed KMS key in your AWS account and Region. You can use a KMS key in cryptographic operations, such as encryption and signing. Some AWS services let you use KMS keys that you create and manage to protect your service resources.

A KMS key is a logical representation of a cryptographic key. In addition to the key material used in cryptographic operations, a KMS key includes metadata, such as the key ID, key policy, creation date, description, and key state.

Use the parameters of CreateKey to specify the type of KMS key, the source of its key material, its key policy, description, tags, and other properties.

Note

AWS KMS has replaced the term customer master key (CMK) with AWS KMS key and KMS key. The concept has not changed. To prevent breaking changes, AWS KMS is keeping some variations of this term.

To create different types of KMS keys, use the following guidance:

Symmetric encryption KMS key

By default, CreateKey creates a symmetric encryption KMS key with key material that KMS generates. This is the basic and most widely used type of KMS key, and provides the best performance.

To create a symmetric encryption KMS key, you don't need to specify any parameters. The default value for KeySpec, SYMMETRIC_DEFAULT, the default value for KeyUsage, ENCRYPT_DECRYPT, and the default value for Origin, AWS_KMS, create a symmetric encryption KMS key with KMS key material.

If you need a key for basic encryption and decryption or you are creating a KMS key to protect your resources in an AWS service, create a symmetric encryption KMS key. The key material in a symmetric encryption key never leaves AWS KMS unencrypted. You can use a symmetric encryption KMS key to encrypt and decrypt data up to 4,096 bytes, but they are typically used to generate data keys and data keys pairs. For details, see GenerateDataKey and GenerateDataKeyPair.

Asymmetric KMS keys

To create an asymmetric KMS key, use the KeySpec parameter to specify the type of key material in the KMS key. Then, use the KeyUsage parameter to determine whether the KMS key will be used to encrypt and decrypt or sign and verify. You can't change these properties after the KMS key is created.

Asymmetric KMS keys contain an RSA key pair, Elliptic Curve (ECC) key pair, or an SM2 key pair (China Regions only). The private key in an asymmetric KMS key never leaves AWS KMS unencrypted. However, you can use the GetPublicKey operation to download the public key so it can be used outside of AWS KMS. Each KMS key can have only one key usage. KMS keys with RSA key pairs can be used to encrypt and decrypt data or sign and verify messages (but not both). KMS keys with NIST-recommended ECC key pairs can be used to sign and verify messages or derive shared secrets (but not both). KMS keys with ECC_SECG_P256K1 can be used only to sign and verify messages. KMS keys with SM2 key pairs (China Regions only) can be used to either encrypt and decrypt data, sign and verify messages, or derive shared secrets (you must choose one key usage type). For information about asymmetric KMS keys, see Asymmetric KMS keys in the AWS Key Management Service Developer Guide.

HMAC KMS key

To create an HMAC KMS key, set the KeySpec parameter to a key spec value for HMAC KMS keys. Then set the KeyUsage parameter to GENERATE_VERIFY_MAC. You must set the key usage even though GENERATE_VERIFY_MAC is the only valid key usage value for HMAC KMS keys. You can't change these properties after the KMS key is created.

HMAC KMS keys are symmetric keys that never leave AWS KMS unencrypted. You can use HMAC keys to generate (GenerateMac) and verify (VerifyMac) HMAC codes for messages up to 4096 bytes.

Multi-Region primary keys

To create a multi-Region primary key in the local AWS Region, use the MultiRegion parameter with a value of True. To create a multi-Region replica key, that is, a KMS key with the same key ID and key material as a primary key, but in a different AWS Region, use the ReplicateKey operation. To change a replica key to a primary key, and its primary key to a replica key, use the UpdatePrimaryRegion operation.

You can create multi-Region KMS keys for all supported KMS key types: symmetric encryption KMS keys, HMAC KMS keys, asymmetric encryption KMS keys, and asymmetric signing KMS keys. You can also create multi-Region keys with imported key material. However, you can't create multi-Region keys in a custom key store.

This operation supports multi-Region keys, an AWS KMS feature that lets you create multiple interoperable KMS keys in different AWS Regions. Because these KMS keys have the same key ID, key material, and other metadata, you can use them interchangeably to encrypt data in one AWS Region and decrypt it in a different AWS Region without re-encrypting the data or making a cross-Region call. For more information about multi-Region keys, see Multi-Region keys in AWS KMS in the AWS Key Management Service Developer Guide.

Imported key material

To import your own key material into a KMS key, begin by creating a KMS key with no key material. To do this, use the Origin parameter of CreateKey with a value of EXTERNAL. Next, use GetParametersForImport operation to get a public key and import token. Use the wrapping public key to encrypt your key material. Then, use ImportKeyMaterial with your import token to import the key material. For step-by-step instructions, see Importing Key Material in the AWS Key Management Service Developer Guide .

You can import key material into KMS keys of all supported KMS key types: symmetric encryption KMS keys, HMAC KMS keys, asymmetric encryption KMS keys, and asymmetric signing KMS keys. You can also create multi-Region keys with imported key material. However, you can't import key material into a KMS key in a custom key store.

To create a multi-Region primary key with imported key material, use the Origin parameter of CreateKey with a value of EXTERNAL and the MultiRegion parameter with a value of True. To create replicas of the multi-Region primary key, use the ReplicateKey operation. For instructions, see Importing key material step 1. For more information about multi-Region keys, see Multi-Region keys in AWS KMS in the AWS Key Management Service Developer Guide.

Custom key store

A custom key store lets you protect your AWS resources using keys in a backing key store that you own and manage. When you request a cryptographic operation with a KMS key in a custom key store, the operation is performed in the backing key store using its cryptographic keys.

AWS KMS supports AWS CloudHSM key stores backed by an AWS CloudHSM cluster and external key stores backed by an external key manager outside of AWS. When you create a KMS key in an AWS CloudHSM key store, AWS KMS generates an encryption key in the AWS CloudHSM cluster and associates it with the KMS key. When you create a KMS key in an external key store, you specify an existing encryption key in the external key manager.

Note

Some external key managers provide a simpler method for creating a KMS key in an external key store. For details, see your external key manager documentation.

Before you create a KMS key in a custom key store, the ConnectionState of the key store must be CONNECTED. To connect the custom key store, use the ConnectCustomKeyStore operation. To find the ConnectionState, use the DescribeCustomKeyStores operation.

To create a KMS key in a custom key store, use the CustomKeyStoreId. Use the default KeySpec value, SYMMETRIC_DEFAULT, and the default KeyUsage value, ENCRYPT_DECRYPT to create a symmetric encryption key. No other key type is supported in a custom key store.

To create a KMS key in an AWS CloudHSM key store, use the Origin parameter with a value of AWS_CLOUDHSM. The AWS CloudHSM cluster that is associated with the custom key store must have at least two active HSMs in different Availability Zones in the AWS Region.

To create a KMS key in an external key store, use the Origin parameter with a value of EXTERNAL_KEY_STORE and an XksKeyId parameter that identifies an existing external key.

Note

Some external key managers provide a simpler method for creating a KMS key in an external key store. For details, see your external key manager documentation.

Cross-account use: No. You cannot use this operation to create a KMS key in a different AWS account.

Required permissions: kms:CreateKey (IAM policy). To use the Tags parameter, kms:TagResource (IAM policy). For examples and information about related permissions, see Allow a user to create KMS keys in the AWS Key Management Service Developer Guide.

Related operations:

Eventual consistency: The AWS KMS API follows an eventual consistency model. For more information, see AWS KMS eventual consistency.

Request Syntax

{
   "BypassPolicyLockoutSafetyCheck": boolean,
   "CustomerMasterKeySpec": "string",
   "CustomKeyStoreId": "string",
   "Description": "string",
   "KeySpec": "string",
   "KeyUsage": "string",
   "MultiRegion": boolean,
   "Origin": "string",
   "Policy": "string",
   "Tags": [ 
      { 
         "TagKey": "string",
         "TagValue": "string"
      }
   ],
   "XksKeyId": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

Note

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

BypassPolicyLockoutSafetyCheck

Skips ("bypasses") the key policy lockout safety check. The default value is false.

Important

Setting this value to true increases the risk that the KMS key becomes unmanageable. Do not set this value to true indiscriminately.

For more information, see Default key policy in the AWS Key Management Service Developer Guide.

Use this parameter only when you intend to prevent the principal that is making the request from making a subsequent PutKeyPolicy request on the KMS key.

Type: Boolean

Required: No

CustomerMasterKeySpec

This parameter has been deprecated.

Instead, use the KeySpec parameter.

The KeySpec and CustomerMasterKeySpec parameters work the same way. Only the names differ. We recommend that you use KeySpec parameter in your code. However, to avoid breaking changes, AWS KMS supports both parameters.

Type: String

Valid Values: RSA_2048 | RSA_3072 | RSA_4096 | ECC_NIST_P256 | ECC_NIST_P384 | ECC_NIST_P521 | ECC_SECG_P256K1 | SYMMETRIC_DEFAULT | HMAC_224 | HMAC_256 | HMAC_384 | HMAC_512 | SM2

Required: No

CustomKeyStoreId

Creates the KMS key in the specified custom key store. The ConnectionState of the custom key store must be CONNECTED. To find the CustomKeyStoreID and ConnectionState use the DescribeCustomKeyStores operation.

This parameter is valid only for symmetric encryption KMS keys in a single Region. You cannot create any other type of KMS key in a custom key store.

When you create a KMS key in an AWS CloudHSM key store, AWS KMS generates a non-exportable 256-bit symmetric key in its associated AWS CloudHSM cluster and associates it with the KMS key. When you create a KMS key in an external key store, you must use the XksKeyId parameter to specify an external key that serves as key material for the KMS key.

Type: String

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

Required: No

Description

A description of the KMS key. Use a description that helps you decide whether the KMS key is appropriate for a task. The default value is an empty string (no description).

Important

Do not include confidential or sensitive information in this field. This field may be displayed in plaintext in CloudTrail logs and other output.

To set or change the description after the key is created, use UpdateKeyDescription.

Type: String

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

Required: No

KeySpec

Specifies the type of KMS key to create. The default value, SYMMETRIC_DEFAULT, creates a KMS key with a 256-bit AES-GCM key that is used for encryption and decryption, except in China Regions, where it creates a 128-bit symmetric key that uses SM4 encryption. For a detailed description of all supported key specs, see Key spec reference in the AWS Key Management Service Developer Guide .

The KeySpec determines whether the KMS key contains a symmetric key or an asymmetric key pair. It also determines the algorithms that the KMS key supports. You can't change the KeySpec after the KMS key is created. To further restrict the algorithms that can be used with the KMS key, use a condition key in its key policy or IAM policy. For more information, see kms:EncryptionAlgorithm, kms:MacAlgorithm, kms:KeyAgreementAlgorithm, or kms:SigningAlgorithm in the AWS Key Management Service Developer Guide .

Important

AWS services that are integrated with AWS KMS use symmetric encryption KMS keys to protect your data. These services do not support asymmetric KMS keys or HMAC KMS keys.

AWS KMS supports the following key specs for KMS keys:

  • Symmetric encryption key (default)

    • SYMMETRIC_DEFAULT

  • HMAC keys (symmetric)

    • HMAC_224

    • HMAC_256

    • HMAC_384

    • HMAC_512

  • Asymmetric RSA key pairs (encryption and decryption -or- signing and verification)

    • RSA_2048

    • RSA_3072

    • RSA_4096

  • Asymmetric NIST-recommended elliptic curve key pairs (signing and verification -or- deriving shared secrets)

    • ECC_NIST_P256 (secp256r1)

    • ECC_NIST_P384 (secp384r1)

    • ECC_NIST_P521 (secp521r1)

  • Other asymmetric elliptic curve key pairs (signing and verification)

    • ECC_SECG_P256K1 (secp256k1), commonly used for cryptocurrencies.

  • SM2 key pairs (encryption and decryption -or- signing and verification -or- deriving shared secrets)

    • SM2 (China Regions only)

Type: String

Valid Values: RSA_2048 | RSA_3072 | RSA_4096 | ECC_NIST_P256 | ECC_NIST_P384 | ECC_NIST_P521 | ECC_SECG_P256K1 | SYMMETRIC_DEFAULT | HMAC_224 | HMAC_256 | HMAC_384 | HMAC_512 | SM2

Required: No

KeyUsage

Determines the cryptographic operations for which you can use the KMS key. The default value is ENCRYPT_DECRYPT. This parameter is optional when you are creating a symmetric encryption KMS key; otherwise, it is required. You can't change the KeyUsage value after the KMS key is created.

Select only one valid value.

  • For symmetric encryption KMS keys, omit the parameter or specify ENCRYPT_DECRYPT.

  • For HMAC KMS keys (symmetric), specify GENERATE_VERIFY_MAC.

  • For asymmetric KMS keys with RSA key pairs, specify ENCRYPT_DECRYPT or SIGN_VERIFY.

  • For asymmetric KMS keys with NIST-recommended elliptic curve key pairs, specify SIGN_VERIFY or KEY_AGREEMENT.

  • For asymmetric KMS keys with ECC_SECG_P256K1 key pairs specify SIGN_VERIFY.

  • For asymmetric KMS keys with SM2 key pairs (China Regions only), specify ENCRYPT_DECRYPT, SIGN_VERIFY, or KEY_AGREEMENT.

Type: String

Valid Values: SIGN_VERIFY | ENCRYPT_DECRYPT | GENERATE_VERIFY_MAC | KEY_AGREEMENT

Required: No

MultiRegion

Creates a multi-Region primary key that you can replicate into other AWS Regions. You cannot change this value after you create the KMS key.

For a multi-Region key, set this parameter to True. For a single-Region KMS key, omit this parameter or set it to False. The default value is False.

This operation supports multi-Region keys, an AWS KMS feature that lets you create multiple interoperable KMS keys in different AWS Regions. Because these KMS keys have the same key ID, key material, and other metadata, you can use them interchangeably to encrypt data in one AWS Region and decrypt it in a different AWS Region without re-encrypting the data or making a cross-Region call. For more information about multi-Region keys, see Multi-Region keys in AWS KMS in the AWS Key Management Service Developer Guide.

This value creates a primary key, not a replica. To create a replica key, use the ReplicateKey operation.

You can create a symmetric or asymmetric multi-Region key, and you can create a multi-Region key with imported key material. However, you cannot create a multi-Region key in a custom key store.

Type: Boolean

Required: No

Origin

The source of the key material for the KMS key. You cannot change the origin after you create the KMS key. The default is AWS_KMS, which means that AWS KMS creates the key material.

To create a KMS key with no key material (for imported key material), set this value to EXTERNAL. For more information about importing key material into AWS KMS, see Importing Key Material in the AWS Key Management Service Developer Guide. The EXTERNAL origin value is valid only for symmetric KMS keys.

To create a KMS key in an AWS CloudHSM key store and create its key material in the associated AWS CloudHSM cluster, set this value to AWS_CLOUDHSM. You must also use the CustomKeyStoreId parameter to identify the AWS CloudHSM key store. The KeySpec value must be SYMMETRIC_DEFAULT.

To create a KMS key in an external key store, set this value to EXTERNAL_KEY_STORE. You must also use the CustomKeyStoreId parameter to identify the external key store and the XksKeyId parameter to identify the associated external key. The KeySpec value must be SYMMETRIC_DEFAULT.

Type: String

Valid Values: AWS_KMS | EXTERNAL | AWS_CLOUDHSM | EXTERNAL_KEY_STORE

Required: No

Policy

The key policy to attach to the KMS key.

If you provide a key policy, it must meet the following criteria:

  • The key policy must allow the calling principal to make a subsequent PutKeyPolicy request on the KMS key. This reduces the risk that the KMS key becomes unmanageable. For more information, see Default key policy in the AWS Key Management Service Developer Guide. (To omit this condition, set BypassPolicyLockoutSafetyCheck to true.)

  • Each statement in the key policy must contain one or more principals. The principals in the key policy must exist and be visible to AWS KMS. When you create a new AWS principal, you might need to enforce a delay before including the new principal in a key policy because the new principal might not be immediately visible to AWS KMS. For more information, see Changes that I make are not always immediately visible in the AWS Identity and Access Management User Guide.

Note

If either of the required Resource or Action elements are missing from a key policy statement, the policy statement has no effect. When a key policy statement is missing one of these elements, the AWS KMS console correctly reports an error, but the CreateKey and PutKeyPolicy API requests succeed, even though the policy statement is ineffective.

For more information on required key policy elements, see Elements in a key policy in the AWS Key Management Service Developer Guide.

If you do not provide a key policy, AWS KMS attaches a default key policy to the KMS key. For more information, see Default key policy in the AWS Key Management Service Developer Guide.

Note

If the key policy exceeds the length constraint, AWS KMS returns a LimitExceededException.

For help writing and formatting a JSON policy document, see the IAM JSON Policy Reference in the AWS Identity and Access Management User Guide .

Type: String

Length Constraints: Minimum length of 1. Maximum length of 32768.

Pattern: [\u0009\u000A\u000D\u0020-\u00FF]+

Required: No

Tags

Assigns one or more tags to the KMS key. Use this parameter to tag the KMS key when it is created. To tag an existing KMS key, use the TagResource operation.

Important

Do not include confidential or sensitive information in this field. This field may be displayed in plaintext in CloudTrail logs and other output.

Note

Tagging or untagging a KMS key can allow or deny permission to the KMS key. For details, see ABAC for AWS KMS in the AWS Key Management Service Developer Guide.

To use this parameter, you must have kms:TagResource permission in an IAM policy.

Each tag consists of a tag key and a tag value. Both the tag key and the tag value are required, but the tag value can be an empty (null) string. You cannot have more than one tag on a KMS key with the same tag key. If you specify an existing tag key with a different tag value, AWS KMS replaces the current tag value with the specified one.

When you add tags to an AWS resource, AWS generates a cost allocation report with usage and costs aggregated by tags. Tags can also be used to control access to a KMS key. For details, see Tags in AWS KMS.

Type: Array of Tag objects

Required: No

XksKeyId

Identifies the external key that serves as key material for the KMS key in an external key store. Specify the ID that the external key store proxy uses to refer to the external key. For help, see the documentation for your external key store proxy.

This parameter is required for a KMS key with an Origin value of EXTERNAL_KEY_STORE. It is not valid for KMS keys with any other Origin value.

The external key must be an existing 256-bit AES symmetric encryption key hosted outside of AWS in an external key manager associated with the external key store specified by the CustomKeyStoreId parameter. This key must be enabled and configured to perform encryption and decryption. Each KMS key in an external key store must use a different external key. For details, see Requirements for a KMS key in an external key store in the AWS Key Management Service Developer Guide.

Each KMS key in an external key store is associated two backing keys. One is key material that AWS KMS generates. The other is the external key specified by this parameter. When you use the KMS key in an external key store to encrypt data, the encryption operation is performed first by AWS KMS using the AWS KMS key material, and then by the external key manager using the specified external key, a process known as double encryption. For details, see Double encryption in the AWS Key Management Service Developer Guide.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Pattern: ^[a-zA-Z0-9-_.]+$

Required: No

Response Syntax

{
   "KeyMetadata": { 
      "Arn": "string",
      "AWSAccountId": "string",
      "CloudHsmClusterId": "string",
      "CreationDate": number,
      "CustomerMasterKeySpec": "string",
      "CustomKeyStoreId": "string",
      "DeletionDate": number,
      "Description": "string",
      "Enabled": boolean,
      "EncryptionAlgorithms": [ "string" ],
      "ExpirationModel": "string",
      "KeyAgreementAlgorithms": [ "string" ],
      "KeyId": "string",
      "KeyManager": "string",
      "KeySpec": "string",
      "KeyState": "string",
      "KeyUsage": "string",
      "MacAlgorithms": [ "string" ],
      "MultiRegion": boolean,
      "MultiRegionConfiguration": { 
         "MultiRegionKeyType": "string",
         "PrimaryKey": { 
            "Arn": "string",
            "Region": "string"
         },
         "ReplicaKeys": [ 
            { 
               "Arn": "string",
               "Region": "string"
            }
         ]
      },
      "Origin": "string",
      "PendingDeletionWindowInDays": number,
      "SigningAlgorithms": [ "string" ],
      "ValidTo": number,
      "XksKeyConfiguration": { 
         "Id": "string"
      }
   }
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

KeyMetadata

Metadata associated with the KMS key.

Type: KeyMetadata object

Errors

For information about the errors that are common to all actions, see Common Errors.

CloudHsmClusterInvalidConfigurationException

The request was rejected because the associated AWS CloudHSM cluster did not meet the configuration requirements for an AWS CloudHSM key store.

  • The AWS CloudHSM cluster must be configured with private subnets in at least two different Availability Zones in the Region.

  • The security group for the cluster (cloudhsm-cluster-<cluster-id>-sg) must include inbound rules and outbound rules that allow TCP traffic on ports 2223-2225. The Source in the inbound rules and the Destination in the outbound rules must match the security group ID. These rules are set by default when you create the AWS CloudHSM cluster. Do not delete or change them. To get information about a particular security group, use the DescribeSecurityGroups operation.

  • The AWS CloudHSM cluster must contain at least as many HSMs as the operation requires. To add HSMs, use the AWS CloudHSM CreateHsm operation.

    For the CreateCustomKeyStore, UpdateCustomKeyStore, and CreateKey operations, the AWS CloudHSM cluster must have at least two active HSMs, each in a different Availability Zone. For the ConnectCustomKeyStore operation, the AWS CloudHSM must contain at least one active HSM.

For information about the requirements for an AWS CloudHSM cluster that is associated with an AWS CloudHSM key store, see Assemble the Prerequisites in the AWS Key Management Service Developer Guide. For information about creating a private subnet for an AWS CloudHSM cluster, see Create a Private Subnet in the AWS CloudHSM User Guide. For information about cluster security groups, see Configure a Default Security Group in the AWS CloudHSM User Guide .

HTTP Status Code: 400

CustomKeyStoreInvalidStateException

The request was rejected because of the ConnectionState of the custom key store. To get the ConnectionState of a custom key store, use the DescribeCustomKeyStores operation.

This exception is thrown under the following conditions:

  • You requested the ConnectCustomKeyStore operation on a custom key store with a ConnectionState of DISCONNECTING or FAILED. This operation is valid for all other ConnectionState values. To reconnect a custom key store in a FAILED state, disconnect it (DisconnectCustomKeyStore), then connect it (ConnectCustomKeyStore).

  • You requested the CreateKey operation in a custom key store that is not connected. This operations is valid only when the custom key store ConnectionState is CONNECTED.

  • You requested the DisconnectCustomKeyStore operation on a custom key store with a ConnectionState of DISCONNECTING or DISCONNECTED. This operation is valid for all other ConnectionState values.

  • You requested the UpdateCustomKeyStore or DeleteCustomKeyStore operation on a custom key store that is not disconnected. This operation is valid only when the custom key store ConnectionState is DISCONNECTED.

  • You requested the GenerateRandom operation in an AWS CloudHSM key store that is not connected. This operation is valid only when the AWS CloudHSM key store ConnectionState is CONNECTED.

HTTP Status Code: 400

CustomKeyStoreNotFoundException

The request was rejected because AWS KMS cannot find a custom key store with the specified key store name or ID.

HTTP Status Code: 400

DependencyTimeoutException

The system timed out while trying to fulfill the request. You can retry the request.

HTTP Status Code: 500

InvalidArnException

The request was rejected because a specified ARN, or an ARN in a key policy, is not valid.

HTTP Status Code: 400

KMSInternalException

The request was rejected because an internal exception occurred. The request can be retried.

HTTP Status Code: 500

LimitExceededException

The request was rejected because a length constraint or quota was exceeded. For more information, see Quotas in the AWS Key Management Service Developer Guide.

HTTP Status Code: 400

MalformedPolicyDocumentException

The request was rejected because the specified policy is not syntactically or semantically correct.

HTTP Status Code: 400

TagException

The request was rejected because one or more tags are not valid.

HTTP Status Code: 400

UnsupportedOperationException

The request was rejected because a specified parameter is not supported or a specified resource is not valid for this operation.

HTTP Status Code: 400

XksKeyAlreadyInUseException

The request was rejected because the (XksKeyId) is already associated with another KMS key in this external key store. Each KMS key in an external key store must be associated with a different external key.

HTTP Status Code: 400

XksKeyInvalidConfigurationException

The request was rejected because the external key specified by the XksKeyId parameter did not meet the configuration requirements for an external key store.

The external key must be an AES-256 symmetric key that is enabled and performs encryption and decryption.

HTTP Status Code: 400

XksKeyNotFoundException

The request was rejected because the external key store proxy could not find the external key. This exception is thrown when the value of the XksKeyId parameter doesn't identify a key in the external key manager associated with the external key proxy.

Verify that the XksKeyId represents an existing key in the external key manager. Use the key identifier that the external key store proxy uses to identify the key. For details, see the documentation provided with your external key store proxy or key manager.

HTTP Status Code: 400

Examples

The following examples are formatted for legibility.

Example Request

This example illustrates one usage of CreateKey.

POST / HTTP/1.1
Host: kms.us-east-2.amazonaws.com
Content-Type: application/x-amz-json-1.1
Authorization: AWS4-HMAC-SHA256\
 Credential=AKIAI44QH8DHBEXAMPLE/20170705/us-east-2/kms/aws4_request,\
 SignedHeaders=content-type;host;x-amz-date;x-amz-target,\
 Signature=8fb59aa17854a97df47aae69f560b66178ed0b5e1ebe334be516c4f3f59acedc
X-Amz-Target: TrentService.CreateKey
X-Amz-Date: 20170705T210455Z
Content-Length: 62

{
  "Tags": [{
    "TagValue": "ExampleUser",
    "TagKey": "CreatedBy"
  }]
}

Example Response

This example illustrates one usage of CreateKey.

HTTP/1.1 200 OK
Server: Server
Date: Wed, 05 Jul 2017 21:04:55 GMT
Content-Type: application/x-amz-json-1.1
Content-Length: 335
Connection: keep-alive
x-amzn-RequestId: 98b2de61-61c5-11e7-bd87-9fc4a74e147b

{
  "KeyMetadata": {
    "AWSAccountId": "111122223333",
    "Arn": "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab",
    "CreationDate": 1.499288695918E9,
    "CustomerMasterKeySpec": "SYMMETRIC_DEFAULT",
    "Description": "",
    "Enabled": true,
    "EncryptionAlgorithms": [
        "SYMMETRIC_DEFAULT"
    ],
    "KeyId": "1234abcd-12ab-34cd-56ef-1234567890ab",
    "KeyManager": "CUSTOMER",
    "KeySpec": "SYMMETRIC_DEFAULT",
    "KeyState": "Enabled",
    "KeyUsage": "ENCRYPT_DECRYPT",
    "MultiRegion": false,
    "Origin": "AWS_KMS"
  }
}

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: