AWS CLI Command Reference

[ aws . kms ]

put-key-policy

Description

Attaches a key policy to the specified KMS key.

For more information about key policies, see Key Policies in the Key Management Service Developer Guide . For help writing and formatting a JSON policy document, see the IAM JSON Policy Reference in the * Identity and Access Management User Guide * . For examples of adding a key policy in multiple programming languages, see Setting a key policy in the Key Management Service Developer Guide .

Cross-account use : No. You cannot perform this operation on a KMS key in a different Amazon Web Services account.

Required permissions : kms:PutKeyPolicy (key policy)

Related operations : GetKeyPolicy

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

See also: AWS API Documentation

Synopsis

  put-key-policy
--key-id <value>
[--policy-name <value>]
--policy <value>
[--bypass-policy-lockout-safety-check | --no-bypass-policy-lockout-safety-check]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options

--key-id (string)

Sets the key policy on the specified KMS key.

Specify the key ID or key ARN of the KMS key.

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 KMS key, use ListKeys or DescribeKey .

--policy-name (string)

The name of the key policy. If no policy name is specified, the default value is default . The only valid value is default .

--policy (string)

The key policy to attach to the KMS key.

The key policy 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 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 KMS. When you create a new Amazon Web Services 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 KMS. For more information, see Changes that I make are not always immediately visible in the Amazon Web Services Identity and Access Management User Guide .

A key policy document can include only the following characters:

  • Printable ASCII characters from the space character (\u0020 ) through the end of the ASCII character range.
  • Printable characters in the Basic Latin and Latin-1 Supplement character set (through \u00FF ).
  • The tab (\u0009 ), line feed (\u000A ), and carriage return (\u000D ) special characters

For information about key policies, see Key policies in KMS in the Key Management Service Developer Guide .For help writing and formatting a JSON policy document, see the IAM JSON Policy Reference in the * Identity and Access Management User Guide * .

--bypass-policy-lockout-safety-check | --no-bypass-policy-lockout-safety-check (boolean)

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

Warning

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 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.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

Global Options

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination. If automatic pagination is disabled, the AWS CLI will only make one call, for the first page of results.

--output (string)

The formatting style for command output.

  • json
  • text
  • table
  • yaml
  • yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

  • on
  • off
  • auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

  • base64
  • raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.

Examples

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To change the key policy for a KMS key

The following put-key-policy example changes the key policy for a customer managed key.

To begin, create a key policy and save it in a local JSON file. In this example, the file is key_policy.json. You can also specify the key policy as a string value of the policy parameter.

The first statement in this key policy gives the AWS account permission to use IAM policies to control access to the KMS key. The second statement gives the test-user user permission to run the describe-key and list-keys commands on the KMS key.

Contents of key_policy.json:

{
    "Version" : "2012-10-17",
    "Id" : "key-default-1",
    "Statement" : [
        {
            "Sid" : "Enable IAM User Permissions",
            "Effect" : "Allow",
            "Principal" : {
                "AWS" : "arn:aws:iam::111122223333:root"
            },
            "Action" : "kms:*",
            "Resource" : "*"
        },
        {
            "Sid" : "Allow Use of Key",
            "Effect" : "Allow",
            "Principal" : {
                "AWS" : "arn:aws:iam::111122223333:user/test-user"
            },
            "Action" : [
                "kms:DescribeKey",
                "kms:ListKeys"
            ],
            "Resource" : "*"
        }
    ]
}

To identify the KMS key, this example uses the key ID, but you can also use a key ARN. To specify the key policy, the command uses the policy parameter. To indicate that the policy is in a file, it uses the required file:// prefix. This prefix is required to identify files on all supported operating systems. Finally, the command uses the policy-name parameter with a value of default. If no policy name is specified, the default value is default. The only valid value is default.

aws kms put-key-policy \
    --policy-name default \
    --key-id 1234abcd-12ab-34cd-56ef-1234567890ab \
    --policy file://key_policy.json

This command does not produce any output. To verify that the command was effective, use the get-key-policy command. The following example command gets the key policy for the same KMS key. The output parameter with a value of text returns a text format that is easy to read.

aws kms get-key-policy \
    --policy-name default \
    --key-id 1234abcd-12ab-34cd-56ef-1234567890ab \
    --output text

Output:

{
    "Version" : "2012-10-17",
    "Id" : "key-default-1",
    "Statement" : [
        {
            "Sid" : "Enable IAM User Permissions",
            "Effect" : "Allow",
            "Principal" : {
                "AWS" : "arn:aws:iam::111122223333:root"
            },
            "Action" : "kms:*",
            "Resource" : "*"
            },
            {
            "Sid" : "Allow Use of Key",
            "Effect" : "Allow",
            "Principal" : {
                "AWS" : "arn:aws:iam::111122223333:user/test-user"
            },
            "Action" : [ "kms:Describe", "kms:List" ],
            "Resource" : "*"
        }
    ]
}

For more information, see Changing a Key Policy in the AWS Key Management Service Developer Guide.

Output

None

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