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187 lines
6.4 KiB
Text
187 lines
6.4 KiB
Text
---
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title: About the aws_kms_key Resource
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---
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# aws\_kms\_key
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Use the `aws_kms_key` InSpec audit resource to test properties of a single AWS KMS Key.
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Use aws_kms_key to verify the properties of a single key. Use aws_kms_keys to verify the properties of all or a group of keys.
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AWS Key Management Service (AWS KMS) is a managed service that makes it easy for you to create and control the encryption keys used to encrypt your data. AWS KMS lets you create master keys that can never be exported from the service and which can be used to encrypt and decrypt data based on policies you define.
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Each AWS KMS Key is uniquely identified by its key_id or arn.
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<br>
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## Availability
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### Installation
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This resource is distributed along with InSpec itself. You can use it automatically.
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### Version
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This resource first became available in v2.1.21 of InSpec.
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## Syntax
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An aws_kms_key resource block identifies a key by key_arn or the key id.
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# Find a kms key by arn
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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it { should exist }
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end
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# Find a kms key by just the id
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describe aws_kms_key('4321dcba-21io-23de-85he-ab0987654321') do
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it { should exist }
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end
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# Hash syntax for key arn
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describe aws_kms_key(key_arn: 'arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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it { should exist }
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end
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<br>
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## Examples
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The following examples show how to use this InSpec audit resource.
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### Test that the specified key does exist
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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it { should exist }
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end
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### Test that the specified key is enabled
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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it { should be_enabled }
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end
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### Test that the specified key is rotation enabled
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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it { should have_rotation_enabled }
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end
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<br>
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## Properties
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### key\_id
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The globally unique identifier for the key.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its('key_id') { should cmp '4321dcba-21io-23de-85he-ab0987654321' }
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end
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### arn
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The ARN identifier of the specified key. An ARN uniquely identifies the key within AWS.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its('arn') { should cmp "arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321" }
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end
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### creation_date
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Specifies the date and time when the key was created.
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# Makes sure that the key was created at least 10 days ago
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its('creation_date') { should be < Time.now - 10 * 86400 }
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end
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### created\_days\_ago
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Specifies the number of days since the key was created.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its('created_days_ago') { should be > 10 }
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end
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### key\_state
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Specifies the state of the key one of "Enabled", "Disabled", "PendingDeletion", "PendingImport". To just check if the key is enabled or not, use the `be_enabled` matcher.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its('key_state') { should cmp "Enabled" }
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end
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### description
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Specifies the description of the key.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its('description') { should cmp "key-description" }
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end
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### deletion\_time
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Specifies the date and time after which AWS KMS deletes the key. This value is present only when KeyState is PendingDeletion , otherwise this value is nil.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its('deletion_time') { should cmp > Time.now + 7 * 86400 }
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end
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### invalidation\_time
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Provides the date and time until the key is not valid. Once the key is not valid, AWS KMS deletes the key and it becomes unusable. This value will be null unless the keys Origin is EXTERNAL and its matcher have_key_expiration is set to true.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its('invalidation_time') { should cmp > Time.now + 7 * 86400 }
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end
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## Matchers
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This InSpec audit resource has the following special matchers. For a full list of available matchers (such as `exist`) please visit our [matchers page](https://www.inspec.io/docs/reference/matchers/).
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### be\_enabled
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The test will pass if the specified key's key_state is set to enabled.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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it { should be_enabled }
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end
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### be\_external
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Provides whether the source of the key's key material is external or not. If it is not external than it was created by AWS KMS. When it is external, the key material was imported from an existing key management infrastructure or the key lacks key material.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its { should be_external }
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end
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### be\_managed\_by\_aws
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Provides whether or not the key manager is from AWS. If it is not managed by AWS, it is managed by the customer.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its { should be_managed_by_aws }
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end
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### have\_key\_expiration
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Specifies whether the key's key material expires. This value is null unless the keys Origin is External.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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its { should have_key_expiration }
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end
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### have\_rotation\_enabled
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The test will pass if automatic rotation of the key material is enabled for the specified key.
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describe aws_kms_key('arn:aws:kms:us-east-1::key/4321dcba-21io-23de-85he-ab0987654321') do
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it { should have_rotation_enabled }
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end
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## AWS Permissions
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Your [Principal](https://docs.aws.amazon.com/IAM/latest/UserGuide/intro-structure.html#intro-structure-principal) will need the `kms:DescribeKey`, and `kms:GetKeyRotationStatus` actions set to allow.
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You can find detailed documentation at [Actions, Resources, and Condition Keys for AWS Key Management Service](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_awskeymanagementservice.html).
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