Creating a CMK¶

Function¶

This API is used to create customer master keys (CMKs) used to encrypt data encryption keys (DEKs).

Note

Default Master Keys are created by services integrated with KMS. Names of Default Master Keys end with /default. Therefore, in naming your CMKs, do not choose those ending with /default.

URI¶

URI format
POST /v1.0/{project_id}/kms/create-key
Parameter description
Table 1 Parameters¶
Parameter
Mandatory
Type
Description
project_id
Yes
String
Project ID

**Table 1** Parameters¶
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID

Requests¶

**Table 2** Request parameters¶
Parameter	Mandatory	Type	Description
key_alias	Yes	String	Alias of a non-default master key (The alias's length ranges from 1 to 255 characters and matches the regular expression ^[a-zA-Z0-9:/_-]{1,255}$. In addition, it must be different from the alias of a Default Master Key created by the system.)
key_spec	No	String	Key generation algorithm. The default value is AES_256. Its value can be: AES_256 SM4 RSA_2048 RSA_3072 RSA_4096 EC_P256 EC_P384 SM2
key_usage	No	String	Key usage. The default value is ENCRYPT_DECRYPT for a symmetric key and SIGN_VERIFY for an asymmetric key. Its value can be: ENCRYPT_DECRYPT SIGN_VERIFY
key_description	No	String	CMK description (The value ranges from 0 to 255 characters.)
origin	No	String	Origin of a CMK. The default value is kms. The following values are enumerated: kms indicates that the CMK material is generated by KMS. external indicates that the CMK material is imported.
sequence	No	String	36-byte serial number of a request message Example: 919c82d4-8046-4722-9094-35c3c6524cff

Responses¶

**Table 3** Response parameters¶
Parameter	Mandatory	Type	Description
key_info	Yes	Array of objects	Information about keys. For details, see Table 4.

**Table 4** **key_info** field description¶
Parameter	Mandatory	Type	Description
key_id	Yes	String	CMK ID
domain_id	Yes	String	User domain ID

Examples¶

The following example describes how to create a CMK with an alias of test.

Example request
```
{
    "key_alias": "test"
}
```

Example response

{
    "key_info": {
        "key_id": "bb6a3d22-dc93-47ac-b5bd-88df7ad35f1e",
        "domain_id": "b168fe00ff56492495a7d22974df2d0b"
    }
}

{
    "error": {
        "error_code": "KMS.XXXX",
        "error_msg": "XXX"
    }
}

Status Codes¶

Table 5 lists the normal status code returned by the response.

**Table 5** Status codes¶
Status Code	Status	Description
200	OK	Request processed successfully.

Exception status code. For details, see Status Codes.

last updated: 2024-11-08 14:06 UTC - commit: 5674aac1874f8e8728192583f58d6e232d714273