Request Syntax Request Parameters Response Syntax Response Elements Errors Examples See Also

GetKeyPolicy

Gets a key policy attached to the specified customer master key (CMK).

Cross-account use: No. You cannot perform this operation on a CMK in a different AWS account.

Required permissions: kms:GetKeyPolicy (key policy)

Related operations: PutKeyPolicy

Request Syntax


{
   "KeyId": "string",
   "PolicyName": "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.

KeyId

A unique identifier for the customer master key (CMK).

Specify the key ID or the Amazon Resource Name (ARN) of the CMK.

For example:

Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

To get the key ID and key ARN for a CMK, use ListKeys or DescribeKey.

Type: String

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

Required: Yes

PolicyName

Specifies the name of the key policy. The only valid name is default. To get the names of key policies, use ListKeyPolicies.

Type: String

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

Pattern: [\w]+

Required: Yes

Response Syntax


{
   "Policy": "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.

Policy

A key policy document in JSON format.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 131072.

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

Errors

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

DependencyTimeoutException

The system timed out while trying to fulfill the request. The request can be retried.

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

KMSInvalidStateException

The request was rejected because the state of the specified resource is not valid for this request.

For more information about how key state affects the use of a CMK, see How Key State Affects Use of a Customer Master Key in the AWS Key Management Service Developer Guide .

HTTP Status Code: 400

NotFoundException

The request was rejected because the specified entity or resource could not be found.

HTTP Status Code: 400

Examples

The following examples are formatted for legibility.

Example Request

This example illustrates one usage of GetKeyPolicy.


POST / HTTP/1.1
Host: kms.us-east-2.amazonaws.com
Content-Length: 74
X-Amz-Target: TrentService.GetKeyPolicy
X-Amz-Date: 20161114T225546Z
Content-Type: application/x-amz-json-1.1
Authorization: AWS4-HMAC-SHA256\
 Credential=AKIAI44QH8DHBEXAMPLE/20161114/us-east-2/kms/aws4_request,\
 SignedHeaders=content-type;host;x-amz-date;x-amz-target,\
 Signature=a88e20eebfbea3bf62d1512d0d2987e2d233becc7631a442237d3661df623a40

{
  "PolicyName": "default",
  "KeyId": "1234abcd-12ab-34cd-56ef-1234567890ab"
}

Example Response

This example illustrates one usage of GetKeyPolicy.


HTTP/1.1 200 OK
Server: Server
Date: Mon, 14 Nov 2016 22:55:47 GMT
Content-Type: application/x-amz-json-1.1
Content-Length: 326
Connection: keep-alive
x-amzn-RequestId: 7b105e7b-aabd-11e6-8039-3123b558b719

{"Policy":"{\n
    \"Version\" : \"2012-10-17\",\n
    \"Id\" : \"key-default-1\",\n
    \"Statement\" : [ {\n
        \"Sid\" : \"Enable IAM User Permissions\",\n
        \"Effect\" : \"Allow\",\n
        \"Principal\" : {\n
            \"AWS\" : \"arn:aws:iam::111122223333:root\"\n
        },\n
        \"Action\" : \"kms:*\",\n
        \"Resource\" : \"*\"\n
    } ]\n
}"}