lib/cose/key/symmetric.rb in cose-0.5.0 vs lib/cose/key/symmetric.rb in cose-0.6.0

@@ -3,26 +3,37 @@
 require "cose/key/base"
 
 module COSE
   module Key
     class Symmetric < Base
-      K_LABEL = -1
+      LABEL_K = -1
+
       KTY_SYMMETRIC = 4
 
-      attr_reader :key_value
+      attr_reader :k
 
-      def initialize(key_value:)
-        if !key_value
-          raise ArgumentError, "Required key value is missing"
+      def self.enforce_type(map)
+        if map[LABEL_KTY] != KTY_SYMMETRIC
+          raise "Not a Symmetric key"
         end
+      end
 
-        @key_value = key_value
+      def initialize(k:, **keyword_arguments) # rubocop:disable Naming/UncommunicativeMethodParamName
+        super(**keyword_arguments)
+
+        if !k
+          raise ArgumentError, "Required key value k is missing"
+        else
+          @k = k
+        end
       end
 
-      def self.from_map(map)
-        enforce_type(map, KTY_SYMMETRIC, "Not a Symmetric key")
+      def map
+        super.merge(LABEL_KTY => KTY_SYMMETRIC, LABEL_K => k)
+      end
 
-        new(key_value: map[K_LABEL])
+      def self.keyword_arguments_for_initialize(map)
+        { k: map[LABEL_K] }
       end
     end
   end
 end