aws.rb in symmetric-encryption-4.1.0

- old
+ new

@@ -13,11 +13,11 @@
 
       # TODO: Map to OpenSSL ciphers
       AWS_KEY_SPEC_MAP = {
         'aes-256-cbc' => 'AES_256',
         'aes-128-cbc' => 'AES_128'
-      }
+      }.freeze
 
       # TODO: Move to Keystore::Aws
       # Rotate the Customer Master key in each of the supplied regions.
       # After the master key has been rotated, use `.write_key_files` to generate
       # a new DEK and re-encrypt with the new CMK in each region.
@@ -66,10 +66,11 @@
 
       # Returns the AWS KMS key spec that matches the supplied OpenSSL cipher name
       def key_spec(cipher_name)
         key_spec = AWS_KEY_SPEC_MAP[cipher_name]
         raise("OpenSSL Cipher: #{cipher_name} has not yet been mapped to an AWS key spec.") unless key_spec
+
         key_spec
       end
 
       # Creates a new master key along with an alias that points to it.
       # Returns [String] the new master key id that was created.
@@ -110,13 +111,13 @@
         # TODO: Add error handling and retry
 
         resp = client.create_key(
           description: 'Symmetric Encryption for Ruby Customer Masker Key',
           tags:        [
-                         {tag_key: 'CreatedAt', tag_value: Time.now.to_s},
-                         {tag_key: 'CreatedBy', tag_value: whoami}
-                       ]
+            {tag_key: 'CreatedAt', tag_value: Time.now.to_s},
+            {tag_key: 'CreatedBy', tag_value: whoami}
+          ]
         )
         resp.key_metadata.key_id
       end
 
       def create_alias(key_id)
@@ -128,9 +129,10 @@
       def auto_create_master_key
         attempt = 1
         yield
       rescue ::Aws::KMS::Errors::NotFoundException
         raise if attempt >= 2
+
         create_master_key
         attempt += 1
         retry
       end
     end