KeyProps

class aws_cdk.aws_kms.KeyProps(*, admins=None, alias=None, description=None, enabled=None, enable_key_rotation=None, key_spec=None, key_usage=None, pending_window=None, policy=None, removal_policy=None, trust_account_identities=None)

Bases: object

Construction properties for a KMS Key object.

Parameters:

admins (Optional[Sequence[IPrincipal]]) – A list of principals to add as key administrators to the key policy. Key administrators have permissions to manage the key (e.g., change permissions, revoke), but do not have permissions to use the key in cryptographic operations (e.g., encrypt, decrypt). These principals will be added to the default key policy (if none specified), or to the specified policy (if provided). Default: []
alias (Optional[str]) – Initial alias to add to the key. More aliases can be added later by calling addAlias. Default: - No alias is added for the key.
description (Optional[str]) – A description of the key. Use a description that helps your users decide whether the key is appropriate for a particular task. Default: - No description.
enabled (Optional[bool]) – Indicates whether the key is available for use. Default: - Key is enabled.
enable_key_rotation (Optional[bool]) – Indicates whether AWS KMS rotates the key. Default: false
key_spec (Optional[KeySpec]) – The cryptographic configuration of the key. The valid value depends on usage of the key. IMPORTANT: If you change this property of an existing key, the existing key is scheduled for deletion and a new key is created with the specified value. Default: KeySpec.SYMMETRIC_DEFAULT
key_usage (Optional[KeyUsage]) – The cryptographic operations for which the key can be used. IMPORTANT: If you change this property of an existing key, the existing key is scheduled for deletion and a new key is created with the specified value. Default: KeyUsage.ENCRYPT_DECRYPT
pending_window (Optional[Duration]) – Specifies the number of days in the waiting period before AWS KMS deletes a CMK that has been removed from a CloudFormation stack. When you remove a customer master key (CMK) from a CloudFormation stack, AWS KMS schedules the CMK for deletion and starts the mandatory waiting period. The PendingWindowInDays property determines the length of waiting period. During the waiting period, the key state of CMK is Pending Deletion, which prevents the CMK from being used in cryptographic operations. When the waiting period expires, AWS KMS permanently deletes the CMK. Enter a value between 7 and 30 days. Default: - 30 days
policy (Optional[PolicyDocument]) – Custom policy document to attach to the KMS key. NOTE - If the @aws-cdk/aws-kms:defaultKeyPolicies feature flag is set (the default for new projects), this policy will override the default key policy and become the only key policy for the key. If the feature flag is not set, this policy will be appended to the default key policy. Default: - A policy document with permissions for the account root to administer the key will be created.
removal_policy (Optional[RemovalPolicy]) – Whether the encryption key should be retained when it is removed from the Stack. This is useful when one wants to retain access to data that was encrypted with a key that is being retired. Default: RemovalPolicy.Retain
trust_account_identities (Optional[bool]) – (deprecated) Whether the key usage can be granted by IAM policies. Setting this to true adds a default statement which delegates key access control completely to the identity’s IAM policy (similar to how it works for other AWS resources). This matches the default behavior when creating KMS keys via the API or console. If the @aws-cdk/aws-kms:defaultKeyPolicies feature flag is set (the default for new projects), this flag will always be treated as ‘true’ and does not need to be explicitly set. Default: - false, unless the @aws-cdk/aws-kms:defaultKeyPolicies feature flag is set.

ExampleMetadata:

infused

Example:

my_trusted_admin_role = iam.Role.from_role_arn(self, "TrustedRole", "arn:aws:iam:....")
# Creates a limited admin policy and assigns to the account root.
my_custom_policy = iam.PolicyDocument(
    statements=[iam.PolicyStatement(
        actions=["kms:Create*", "kms:Describe*", "kms:Enable*", "kms:List*", "kms:Put*"
        ],
        principals=[iam.AccountRootPrincipal()],
        resources=["*"]
    )]
)
key = kms.Key(self, "MyKey",
    policy=my_custom_policy
)

Attributes

admins

A list of principals to add as key administrators to the key policy.

Key administrators have permissions to manage the key (e.g., change permissions, revoke), but do not have permissions to use the key in cryptographic operations (e.g., encrypt, decrypt).

These principals will be added to the default key policy (if none specified), or to the specified policy (if provided).

Default:: []

alias

Initial alias to add to the key.

More aliases can be added later by calling addAlias.

Default:

No alias is added for the key.

description

A description of the key.

Use a description that helps your users decide whether the key is appropriate for a particular task.

Default:

No description.

enable_key_rotation

Indicates whether AWS KMS rotates the key.

Default:: false

enabled

Indicates whether the key is available for use.

Default:

Key is enabled.

key_spec

The cryptographic configuration of the key. The valid value depends on usage of the key.

IMPORTANT: If you change this property of an existing key, the existing key is scheduled for deletion and a new key is created with the specified value.

Default:: KeySpec.SYMMETRIC_DEFAULT

key_usage

The cryptographic operations for which the key can be used.

IMPORTANT: If you change this property of an existing key, the existing key is scheduled for deletion and a new key is created with the specified value.

Default:: KeyUsage.ENCRYPT_DECRYPT

pending_window

Specifies the number of days in the waiting period before AWS KMS deletes a CMK that has been removed from a CloudFormation stack.

When you remove a customer master key (CMK) from a CloudFormation stack, AWS KMS schedules the CMK for deletion and starts the mandatory waiting period. The PendingWindowInDays property determines the length of waiting period. During the waiting period, the key state of CMK is Pending Deletion, which prevents the CMK from being used in cryptographic operations. When the waiting period expires, AWS KMS permanently deletes the CMK.

Enter a value between 7 and 30 days.

Default:

30 days

See:

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-kms-key.html#cfn-kms-key-pendingwindowindays

policy

Custom policy document to attach to the KMS key.

NOTE - If the @aws-cdk/aws-kms:defaultKeyPolicies feature flag is set (the default for new projects), this policy will override the default key policy and become the only key policy for the key. If the feature flag is not set, this policy will be appended to the default key policy.

Default:

A policy document with permissions for the account root to

administer the key will be created.

removal_policy

Whether the encryption key should be retained when it is removed from the Stack.

This is useful when one wants to retain access to data that was encrypted with a key that is being retired.

Default:: RemovalPolicy.Retain

trust_account_identities

(deprecated) Whether the key usage can be granted by IAM policies.

Setting this to true adds a default statement which delegates key access control completely to the identity’s IAM policy (similar to how it works for other AWS resources). This matches the default behavior when creating KMS keys via the API or console.

If the @aws-cdk/aws-kms:defaultKeyPolicies feature flag is set (the default for new projects), this flag will always be treated as ‘true’ and does not need to be explicitly set.

Default:

false, unless the @aws-cdk/aws-kms:defaultKeyPolicies feature flag is set.

Deprecated:

redundant with the @aws-cdk/aws-kms:defaultKeyPolicies feature flag

See:

https://docs.aws.amazon.com/kms/latest/developerguide/key-policies.html#key-policy-default-allow-root-enable-iam

Stability:

deprecated