AWS Identity and Access Management
User Guide

Actions, Resources, and Condition Keys for AWS Key Management Service

AWS Key Management Service (service prefix: kms) provides the following service-specific resources, actions, and condition context keys for use in IAM permission policies.

References:

Actions Defined by AWS Key Management Service

You can specify the following actions in the Action element of an IAM policy statement. Use policies to grant permissions to perform an operation in AWS. When you use an action in a policy, you usually allow or deny access to the API operation or CLI command with the same name. However, in some cases, a single action controls access to more than one operation. Alternatively, some operations require several different actions.

The Resource column indicates whether each action supports resource-level permissions. If there is no value for this column, you must specify all resources ("*") in the Resource element of your policy statement. If the column includes a resource type, then you can specify an ARN of that type in a statement with that action. Required resources are indicated in the table with an asterisk (*). If you specify a resource-level permission ARN in a statement using this action, then it must be of this type. Some actions support multiple resource types. If the resource type is optional (not indicated as required), then you can choose to use one but not the other.

For details about the columns in the following table, see The Actions Table.

Actions Description Access Level Resource Types (*required) Condition Keys Dependent Actions
CancelKeyDeletion Controls permission to cancel the scheduled deletion of a customer master key. Write

key*

kms:CallerAccount

kms:ViaService

ConnectCustomKeyStore Controls permission to connect or reconnect a custom key store to its associated AWS CloudHSM cluster. Write
CreateAlias Controls permission to create an alias for a customer master key (CMK). Aliases are optional friendly names that you can associate with customer master keys. Write

alias*

key*

kms:CallerAccount

kms:ViaService

CreateCustomKeyStore Controls permission to create a custom key store that is associated with an AWS CloudHSM cluster that you own and manage. Write

cloudhsm:DescribeClusters

CreateGrant Controls permission to add a grant to a customer master key. You can use grants to add permissions without changing the key policy or IAM policy. Permissions management

key*

kms:CallerAccount

kms:GrantConstraintType

kms:GrantIsForAWSResource

kms:ViaService

CreateKey Controls permission to create a customer master key that can be used to protect data keys and other sensitive information. Write

kms:BypassPolicyLockoutSafetyCheck

kms:CustomerMasterKeySpec

kms:CustomerMasterKeyUsage

kms:KeyOrigin

Decrypt Controls permission to decrypt ciphertext that was encrypted under a customer master key. Write

key*

kms:CallerAccount

kms:EncryptionAlgorithm

kms:EncryptionContextKeys

kms:ViaService

DeleteAlias Controls permission to delete an alias. Aliases are optional friendly names that you can associate with customer master keys. Write

alias*

key*

kms:CallerAccount

kms:ViaService

DeleteCustomKeyStore Controls permission to delete a custom key store. Write
DeleteImportedKeyMaterial Controls permission to delete cryptographic material that you imported into a customer master key. This action makes the key unusable. Write

key*

kms:CallerAccount

kms:ViaService

DescribeCustomKeyStores Controls permission to view detailed information about custom key stores in the account and region. Read
DescribeKey Controls permission to view detailed information about a customer master key. Read

key*

kms:CallerAccount

kms:ViaService

DisableKey Controls permission to disable a customer master key, which prevents it from being used in cryptographic operations. Write

key*

kms:CallerAccount

kms:ViaService

DisableKeyRotation Controls permission to disable automatic rotation of a customer managed customer master key. Write

key*

kms:CallerAccount

kms:ViaService

DisconnectCustomKeyStore Controls permission to disconnect the custom key store from its associated AWS CloudHSM cluster. Write
EnableKey Controls permission to change the state of a customer master key (CMK) to enabled. This allows the CMK to be used in cryptographic operations. Write

key*

kms:CallerAccount

kms:ViaService

EnableKeyRotation Controls permission to enable automatic rotation of the cryptographic material in a customer master key. Write

key*

kms:CallerAccount

kms:ViaService

Encrypt Controls permission to use the specified customer master key to encrypt data and data keys. Write

key*

kms:CallerAccount

kms:EncryptionAlgorithm

kms:EncryptionContextKeys

kms:ViaService

GenerateDataKey Controls permission to use the customer master key to generate data keys. You can use the data keys to encrypt data outside of AWS KMS. Write

key*

kms:CallerAccount

kms:EncryptionAlgorithm

kms:EncryptionContextKeys

kms:ViaService

GenerateDataKeyPair Controls permission to use the customer master key to generate data key pairs. Write

key*

kms:CallerAccount

kms:DataKeyPairSpec

kms:EncryptionAlgorithm

kms:EncryptionContextKeys

kms:ViaService

GenerateDataKeyPairWithoutPlaintext Controls permission to use the customer master key to generate data key pairs. Unlike the GenerateDataKeyPair operation, this operation returns an encrypted private key without a plaintext copy. Write

key*

kms:CallerAccount

kms:DataKeyPairSpec

kms:EncryptionAlgorithm

kms:EncryptionContextKeys

kms:ViaService

GenerateDataKeyWithoutPlaintext Controls permission to use the customer master key to generate a data key. Unlike the GenerateDataKey operation, this operation returns an encrypted data key without a plaintext version of the data key. Write

key*

kms:CallerAccount

kms:EncryptionAlgorithm

kms:EncryptionContextKeys

kms:ViaService

GenerateRandom Controls permission to get a cryptographically secure random byte string from AWS KMS. Write
GetKeyPolicy Controls permission to view the key policy for the specified customer master key. Read

key*

kms:CallerAccount

kms:ViaService

GetKeyRotationStatus Controls permission to determine whether automatic key rotation is enabled on the customer master key. Read

key*

kms:CallerAccount

kms:ViaService

GetParametersForImport Controls permission to get data that is required to import cryptographic material into a customer managed key, including a public key and import token. Read

key*

kms:CallerAccount

kms:ViaService

kms:WrappingAlgorithm

kms:WrappingKeySpec

GetPublicKey Controls permission to download the public key of an asymmetric customer master key. Read

key*

kms:CallerAccount

kms:ViaService

ImportKeyMaterial Controls permission to import cryptographic material into a customer master key. Write

key*

kms:CallerAccount

kms:ExpirationModel

kms:ValidTo

kms:ViaService

ListAliases Controls permission to view the aliases that are defined in the account. Aliases are optional friendly names that you can associate with customer master keys. List
ListGrants Controls permission to view all grants for a customer master key. List

key*

kms:CallerAccount

kms:GrantIsForAWSResource

kms:ViaService

ListKeyPolicies Controls permission to view the names of key policies for a customer master key. List

key*

kms:CallerAccount

kms:ViaService

ListKeys Controls permission to view the key ID and Amazon Resource Name (ARN) of all customer master keys in the account. List
ListResourceTags Controls permission to view all tags that are attached to a customer master key. Read

key*

kms:CallerAccount

kms:ViaService

ListRetirableGrants Controls permission to view grants in which the specified principal is the retiring principal. Other principals might be able to retire the grant and this principal might be able to retire other grants. List

key*

PutKeyPolicy Controls permission to replace the key policy for the specified customer master key. Permissions management

key*

kms:BypassPolicyLockoutSafetyCheck

kms:CallerAccount

kms:ViaService

ReEncryptFrom Controls permission to decrypt data as part of the process that decrypts and reencrypts the data within AWS KMS. Write

key*

kms:CallerAccount

kms:EncryptionAlgorithm

kms:EncryptionContextKeys

kms:ReEncryptOnSameKey

kms:ViaService

ReEncryptTo Controls permission to encrypt data as part of the process that decrypts and reencrypts the data within AWS KMS. Write

key*

kms:CallerAccount

kms:EncryptionAlgorithm

kms:EncryptionContextKeys

kms:ReEncryptOnSameKey

kms:ViaService

RetireGrant Controls permission to retire a grant. The RetireGrant operation is typically called by the grant user after they complete the tasks that the grant allowed them to perform. Permissions management

key*

RevokeGrant Controls permission to revoke a grant, which denies permission for all operations that depend on the grant. Permissions management

key*

kms:CallerAccount

kms:GrantIsForAWSResource

kms:ViaService

ScheduleKeyDeletion Controls permission to schedule deletion of a customer master key. Write

key*

kms:CallerAccount

kms:ViaService

Sign Controls permission to produce a digital signature for a message. Write

key*

kms:CallerAccount

kms:MessageType

kms:SigningAlgorithm

kms:ViaService

TagResource Controls permission to create or update tags that are attached to a customer master key. Tagging

key*

kms:CallerAccount

kms:ViaService

UntagResource Controls permission to delete tags that are attached to a customer master key. Tagging

key*

kms:CallerAccount

kms:ViaService

UpdateAlias Controls permission to associate an alias with a different customer master key. An alias is an optional friendly name that you can associate with a customer master key. Write

alias*

key*

kms:CallerAccount

kms:ViaService

UpdateCustomKeyStore Controls permission to change the properties of a custom key store. Write
UpdateKeyDescription Controls permission to delete or change the description of a customer master key. Write

key*

kms:CallerAccount

kms:ViaService

Verify Controls permission to use the specified customer master key to verify digital signatures. Write

key*

kms:CallerAccount

kms:MessageType

kms:SigningAlgorithm

kms:ViaService

Resources Defined by AWS Key Management Service

The following resource types are defined by this service and can be used in the Resource element of IAM permission policy statements. Each action in the Actions table identifies the resource types that can be specified with that action. A resource type can also define which condition keys you can include in a policy. These keys are displayed in the last column of the table. For details about the columns in the following table, see The Resource Types Table.

Resource Types ARN Condition Keys
alias arn:${Partition}:kms:${Region}:${Account}:alias/${Alias}
key arn:${Partition}:kms:${Region}:${Account}:key/${KeyId}

Condition Keys for AWS Key Management Service

AWS Key Management Service defines the following condition keys that can be used in the Condition element of an IAM policy. You can use these keys to further refine the conditions under which the policy statement applies. For details about the columns in the following table, see The Condition Keys Table.

To view the global condition keys that are available to all services, see Available Global Condition Keys in the IAM Policy Reference.

Condition Keys Description Type
kms:BypassPolicyLockoutSafetyCheck Controls access to the CreateKey and PutKeyPolicy operations based on the value of the BypassPolicyLockoutSafetyCheck parameter in the request. Bool
kms:CallerAccount Controls access to specified AWS KMS operations based on the AWS account ID of the caller. You can use this condition key to allow or deny access to all IAM users and roles in an AWS account in a single policy statement. String
kms:CustomerMasterKeySpec Controls access to an API operation based on the CustomerMasterKeySpec property of the CMK that is created by or used in the operation. Use it to qualify authorization of the CreateKey operation or any operation that is authorized for a CMK resource. String
kms:CustomerMasterKeyUsage Controls access to an API operation based on the KeyUsage property of the CMK created by or used in the operation. Use it to qualify authorization of the CreateKey operation or any operation that is authorized for a CMK resource. String
kms:DataKeyPairSpec Controls access to GenerateDataKeyPair and GenerateDataKeyPairWithoutPlaintext operations based on the value of the DataKeyPairSpec parameter in the request. String
kms:EncryptionAlgorithm Controls access to encryption operations based on the value of the encryption algorithm in the request. String
kms:EncryptionContextKeys Controls access based on the presence of specified keys in the encryption context. The encryption context is an optional element in a cryptographic operation. String
kms:ExpirationModel Controls access to the ImportKeyMaterial operation based on the value of the ExpirationModel parameter in the request. String
kms:GrantConstraintType Controls access to the CreateGrant operation based on the grant constraint in the request. String
kms:GrantIsForAWSResource Controls access to the CreateGrant operation when the request comes from a specified AWS service. Bool
kms:GrantOperations Controls access to the CreateGrant operation based on the operations in the grant. String
kms:GranteePrincipal Controls access to the CreateGrant operation based on the grantee principal in the grant. String
kms:KeyOrigin Controls access to an API operation based on the Origin property of the CMK created by or used in the operation. Use it to qualify authorization of the CreateKey operation or any operation that is authorized for a CMK resource. String
kms:MessageType Controls access to the Sign and Verify operations based on the value of the MessageType parameter in the request. String
kms:ReEncryptOnSameKey Controls access to the ReEncrypt operation when it uses the same customer master key that was used for the Encrypt operation. Bool
kms:RetiringPrincipal Controls access to the CreateGrant operation based on the retiring principal in the grant. String
kms:SigningAlgorithm Controls access to the Sign and Verify operations based on the signing algorithm in the request. String
kms:ValidTo Controls access to the ImportKeyMaterial operation based on the value of the ValidTo parameter in the request. You can use this condition key to allow users to import key material only when it expires by the specified date. Numeric
kms:ViaService Controls access when a request made on the principal's behalf comes from a specified AWS service. String
kms:WrappingAlgorithm Controls access to the GetParametersForImport operation based on the value of the WrappingAlgorithm parameter in the request. String
kms:WrappingKeySpec Controls access to the GetParametersForImport operation based on the value of the WrappingKeySpec parameter in the request. String