Last updated: 2021-01-28 20:02:01

1. API Description

Domain name for API request:

Create a master key CMK (Custom Master Key) for user management data keys

A maximum of 100 requests can be initiated per second for this API.

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common parameter. The value used for this API: CreateKey.
Version Yes String Common parameter. The value used for this API: 2019-01-18.
Region Yes String Common parameter. For more information, please see the list of regions supported by the product.
Alias Yes String Unique alias that makes a key more recognizable and understandable. This parameter cannot be empty, can contain 1-60 letters, digits, -, and _, and must begin with a letter or digit. The kms- prefix is used for Tencent Cloud products.
Description No String CMK description of up to 1,024 bytes in length
KeyUsage No String Key purpose. Valid values: ENCRYPT_DECRYPT (default value; creating a symmetric key for encryption and decryption), ASYMMETRIC_DECRYPT_RSA_2048 (creating an RSA2048 asymmetric key for encryption and decryption), ASYMMETRIC_DECRYPT_SM2 (creating an SM2 asymmetric key for encryption and decryption), and ASYMMETRIC_SIGN_VERIFY_SM2 (creating an SM2 asymmetric key for signature verification).
Type No Integer Specifies the key type. Default value: 1. Valid value: 1 - default type, indicating that the CMK is created by KMS; 2 - EXTERNAL type, indicating that you need to import key material. For more information, please see the GetParametersForImport and ImportKeyMaterial API documents.
Tags.N No Array of Tag Tag list

3. Output Parameters

Parameter Name Type Description
KeyId String Globally unique CMK ID
Alias String Alias that makes a key more recognizable and understandable
CreateTime Integer Key creation time in UNIX timestamp format
Description String CMK description
KeyState String CMK status
KeyUsage String CMK usage
TagCode Integer Tag operation return code. 0: success; 1: internal error; 2: business processing error
TagMsg String Tag operation return information
RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Example

Example1 Creating a CMK

This example shows you how to create a CMK for data encryption key management. The CMK can be used in other APIs to create data encryption keys, perform encryption and decryption, and do more.

Input Example
&<Common request parameters>

Output Example

  "Response": {
    "KeyId": "9999aed0-4956-11e9-bc70-5254005e86b4",
    "Alias": "alias-0001",
    "CreateTime": 1552897190,
    "Description": "test cmk",
    "TagMsg": "Success",
    "TagCode": 1,
    "KeyState": "Enabled",
    "KeyUsage": "ENCRYPT_DECRYPT",
    "RequestId": "850bf779-2249-4995-8c55-b3966daf0a8c"

5. Developer Resources


TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
InternalError Internal error.
InvalidParameter Invalid parameter.
InvalidParameterValue.AliasAlreadyExists The alias already exists.
InvalidParameterValue.InvalidAlias Incorrect alias format
InvalidParameterValue.InvalidKeyUsage Incorrect KeyUsage parameter.
InvalidParameterValue.InvalidType Incorrect Type parameter.
InvalidParameterValue.TagKeysDuplicated Duplicate tag key.
InvalidParameterValue.TagsNotExisted The tag key or tag value does not exist.
LimitExceeded.CmkLimitExceeded The number of CMKs has reached the upper limit.
UnauthorizedOperation Unauthorized operation.
UnsupportedOperation.ServiceTemporaryUnavailable The service is temporarily unavailable.
UnsupportedOperation.UnsupportedKeyUsageInCurrentRegion The encryption method is not supported in the current region.