resource/aws_kms_grant: Support operations on asymmetric keys

.changelog/17836.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_kms_grant: Adds support for operations on asymmetric keys
+```

aws/resource_aws_kms_grant.go

@@ -59,18 +59,8 @@ func resourceAwsKmsGrant() *schema.Resource {
 				Type: schema.TypeSet,
 				Set:  schema.HashString,
 				Elem: &schema.Schema{
-					Type: schema.TypeString,
-					ValidateFunc: validation.StringInSlice([]string{
-						kms.GrantOperationCreateGrant,
-						kms.GrantOperationDecrypt,
-						kms.GrantOperationDescribeKey,
-						kms.GrantOperationEncrypt,
-						kms.GrantOperationGenerateDataKey,
-						kms.GrantOperationGenerateDataKeyWithoutPlaintext,
-						kms.GrantOperationReEncryptFrom,
-						kms.GrantOperationReEncryptTo,
-						kms.GrantOperationRetireGrant,
-					}, false),
+					Type:         schema.TypeString,
+					ValidateFunc: validation.StringInSlice(kms.GrantOperation_Values(), false),
 				},
 				Required: true,
 				ForceNew: true,
@@ -155,8 +145,6 @@ func resourceAwsKmsGrantCreate(d *schema.ResourceData, meta interface{}) error {
 		input.GrantTokens = expandStringSet(v.(*schema.Set))
 	}
 
-	log.Printf("[DEBUG]: Adding new KMS Grant: %s", input)
-
 	var out *kms.CreateGrantOutput
 
 	err := resource.Retry(3*time.Minute, func() *resource.RetryError {
@@ -171,10 +159,8 @@ func resourceAwsKmsGrantCreate(d *schema.ResourceData, meta interface{}) error {
 				isAWSErr(err, kms.ErrCodeInternalException, "") ||
 				isAWSErr(err, kms.ErrCodeInvalidArnException, "") {
 				return resource.RetryableError(
-					fmt.Errorf("Error adding new KMS Grant for key: %s, retrying %s",
-						*input.KeyId, err))
+					fmt.Errorf("error creating KMS Grant for Key (%s), retrying: %w", keyId, err))
 			}
-			log.Printf("[ERROR] An error occurred creating new AWS KMS Grant: %s", err)
 			return resource.NonRetryableError(err)
 		}
 		return nil
@@ -185,11 +171,10 @@ func resourceAwsKmsGrantCreate(d *schema.ResourceData, meta interface{}) error {
 	}
 
 	if err != nil {
-		return fmt.Errorf("Error creating KMS grant: %s", err)
+		return fmt.Errorf("error creating KMS Grant for Key (%s): %w", keyId, err)
 	}
 
-	log.Printf("[DEBUG] Created new KMS Grant: %s", *out.GrantId)
-	d.SetId(fmt.Sprintf("%s:%s", keyId, *out.GrantId))
+	d.SetId(fmt.Sprintf("%s:%s", keyId, aws.StringValue(out.GrantId)))
 	d.Set("grant_id", out.GrantId)
 	d.Set("grant_token", out.GrantToken)
 
@@ -204,20 +189,19 @@ func resourceAwsKmsGrantRead(d *schema.ResourceData, meta interface{}) error {
 		return err
 	}
 
-	log.Printf("[DEBUG] Looking for grant id: %s", grantId)
 	grant, err := findKmsGrantByIdWithRetry(conn, keyId, grantId)
 
 	if err != nil {
 		if isResourceNotFoundError(err) {
-			log.Printf("[WARN] %s KMS grant id not found for key id %s, removing from state file", grantId, keyId)
+			log.Printf("[WARN] KMS Grant (%s) not found for Key (%s), removing from state file", grantId, keyId)
 			d.SetId("")
 			return nil
 		}
 		return err
 	}
 
 	if grant == nil {
-		log.Printf("[WARN] %s KMS grant id not found for key id %s, removing from state file", grantId, keyId)
+		log.Printf("[WARN] KMS Grant (%s) not found for Key (%s), removing from state file", grantId, keyId)
 		d.SetId("")
 		return nil
 	}
@@ -245,7 +229,7 @@ func resourceAwsKmsGrantRead(d *schema.ResourceData, meta interface{}) error {
 	if err := d.Set("operations", aws.StringValueSlice(grant.Operations)); err != nil {
 		log.Printf("[DEBUG] Error setting operations for grant %s with error %s", grantId, err)
 	}
-	if *grant.Name != "" {
+	if aws.StringValue(grant.Name) != "" {
 		d.Set("name", grant.Name)
 	}
 	if grant.Constraints != nil {
@@ -402,7 +386,7 @@ func findKmsGrantById(conn *kms.KMS, keyId string, grantId string, marker *strin
 	}
 
 	if err != nil {
-		return nil, fmt.Errorf("error listing KMS Grants: %s", err)
+		return nil, fmt.Errorf("error listing KMS Grants: %w", err)
 	}
 
 	grant = getKmsGrantById(out.Grants, grantId)

aws/resource_aws_kms_grant_test.go

@@ -174,6 +174,31 @@ func TestAccAWSKmsGrant_ARN(t *testing.T) {
 	})
 }
 
+func TestAccAWSKmsGrant_AsymmetricKey(t *testing.T) {
+	resourceName := "aws_kms_grant.test"
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckAWSKmsGrantDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSKmsGrant_AsymmetricKey(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckAWSKmsGrantExists(resourceName),
+				),
+			},
+			{
+				ResourceName:            resourceName,
+				ImportState:             true,
+				ImportStateVerify:       true,
+				ImportStateVerifyIgnore: []string{"grant_token", "retire_on_delete"},
+			},
+		},
+	})
+}
+
 func TestAccAWSKmsGrant_disappears(t *testing.T) {
 	resourceName := "aws_kms_grant.test"
 	rName := acctest.RandomWithPrefix("tf-acc-test")
@@ -327,3 +352,40 @@ resource "aws_kms_grant" "test" {
 }
 `, rName, operations)
 }
+
+func testAccAWSKmsGrant_AsymmetricKey(rName string) string {
+	return fmt.Sprintf(`
+resource "aws_kms_grant" "test" {
+  name              = "%[1]s"
+  key_id            = aws_kms_key.test.key_id
+  grantee_principal = aws_iam_role.test.arn
+  operations        = ["GetPublicKey", "Sign", "Verify"]
+}
+
+resource "aws_kms_key" "test" {
+  description             = "Terraform acc test key %[1]s"
+  deletion_window_in_days = 7
+
+  key_usage                = "SIGN_VERIFY"
+  customer_master_key_spec = "RSA_2048"
+}
+
+data "aws_iam_policy_document" "test" {
+  statement {
+    effect  = "Allow"
+    actions = ["sts:AssumeRole"]
+
+    principals {
+      type        = "Service"
+      identifiers = ["ec2.amazonaws.com"]
+    }
+  }
+}
+
+resource "aws_iam_role" "test" {
+  name               = %[1]q
+  path               = "/service-role/"
+  assume_role_policy = data.aws_iam_policy_document.test.json
+}
+`, rName)
+}

website/docs/r/kms_grant.html.markdown

@@ -56,7 +56,7 @@ The following arguments are supported:
 * `name` - (Optional, Forces new resources) A friendly name for identifying the grant.
 * `key_id` - (Required, Forces new resources) The unique identifier for the customer master key (CMK) that the grant applies to. Specify the key ID or the Amazon Resource Name (ARN) of the CMK. To specify a CMK in a different AWS account, you must use the key ARN.
 * `grantee_principal` - (Required, Forces new resources) The principal that is given permission to perform the operations that the grant permits in ARN format. Note that due to eventual consistency issues around IAM principals, terraform's state may not always be refreshed to reflect what is true in AWS.
-* `operations` - (Required, Forces new resources) A list of operations that the grant permits. The permitted values are: `Decrypt, Encrypt, GenerateDataKey, GenerateDataKeyWithoutPlaintext, ReEncryptFrom, ReEncryptTo, CreateGrant, RetireGrant, DescribeKey`
+* `operations` - (Required, Forces new resources) A list of operations that the grant permits. The permitted values are: `Decrypt`, `Encrypt`, `GenerateDataKey`, `GenerateDataKeyWithoutPlaintext`, `ReEncryptFrom`, `ReEncryptTo`, `Sign`, `Verify`, `GetPublicKey`, `CreateGrant`, `RetireGrant`, `DescribeKey`, `GenerateDataKeyPair`, or `GenerateDataKeyPairWithoutPlaintext`.
 * `retiring_principal` - (Optional, Forces new resources) The principal that is given permission to retire the grant by using RetireGrant operation in ARN format. Note that due to eventual consistency issues around IAM principals, terraform's state may not always be refreshed to reflect what is true in AWS.
 * `constraints` - (Optional, Forces new resources) A structure that you can use to allow certain operations in the grant only when the desired encryption context is present. For more information about encryption context, see [Encryption Context](http://docs.aws.amazon.com/kms/latest/developerguide/encryption-context.html).
 * `grant_creation_tokens` - (Optional, Forces new resources) A list of grant tokens to be used when creating the grant. See [Grant Tokens](http://docs.aws.amazon.com/kms/latest/developerguide/concepts.html#grant_token) for more information about grant tokens.